ACE index

Every Autumn is a Season .
Every Season is something that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter .
Everything that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter is a Season .

Axiom_1

Every Axiom_1 contains a BodyOfWater .
Every Axiom_1 hasPart something that contains a BodyOfWater .
Every Axiom_1 is something .
Everything that hasPart something that contains a BodyOfWater is a Axiom_1 .

Axiom_2

Every Axiom_2 contains a BodyOfWater .
Every Axiom_2 contains something that madeOf a Water .
Every Axiom_2 is something .
Everything that contains something that madeOf a Water is a Axiom_2 .

Backwater

Every Backwater hasFootprint a Footprint .
Every Backwater is a Pool.InRiver .
Every Backwater isDirectComponentOf something that is a River or that is a Stream .
No Backwater hasCurrent a Current .
No Backwater is a Dub .
No Dam.Water is a Backwater .

BalancingPond

BalancingPond hasSynonym " Balancing Pond " .
Every BalancingPond hasPrimaryPurpose a FloodPrevention .
Every BalancingPond is a Pond .
Every BalancingPond that adjacentTo a Canal is a TypicalBalancingPond .
Every TypicalBalancingPond is a BalancingPond that adjacentTo a Canal .

Bank

Every Bank hasFootprint a Footprint .
Every Bank is a HydrologyConcepts .
Every Bank isEdgeOf something that is a Basin or that is a Channel .
Every Bank that isEdgeOf a Channel is a ChannelBank .
Every Bank that isEdgeOf a Channel that contains a River is a RiverBank .
Every Basin is something that hasPart a Bank and that hasPart a Bed .
Every ChannelBank is a Bank that isEdgeOf a Channel .
Every RiverBank is a Bank that isEdgeOf a Channel that contains a River .
No AreaOfLand is a Bank .
No Bank is a DisusedCanalStretch .
No Bank is a DryDisusedCanalStretch .
No Bank is a Sink .
No Basin is a Bank .
No Bed is a Bank .
No BodyOfWater is a Bank .
No Canal is a Bank .
No CanalStretch is a Bank .
No Channel is a Bank .
No DryCanalStretch is a Bank .
No Flume is a Bank .
No Ford is a Bank .
No Pipe is a Bank .
No Structure is a Bank .

Basin

Every Bank isEdgeOf something that is a Basin or that is a Channel .
Every Basin directlyConnectedTo nothing but something that is a Basin or that is a Channel or that is a Pipe .
Every Basin enables something that contains a Water .
Every Basin hasFootprint a Footprint .
Every Basin is a Hollow that directlyLocatedIn a GroundSurface .
Every Basin is a HydrologyConcepts .
Every Basin is something that hasPart a Bank and that hasPart a Bed .
Every Basin that contains a Water is a TypicalBasin.Container .
Every Bed isBottomOf something that is a Basin or that is a Channel .
Every Channel is something that connectedTo a Basin or that connectedTo a Channel or that connectedTo a Pipe or that connectedTo a Wetland .
Every Lake containedIn a Basin .
Every Pipe directlyConnectedTo nothing but something that is a Basin or that is a Channel or that is a Pipe .
Every Pipe directlyConnectedTo something that is a Basin or that is a Channel or that is a Pipe .
Every PlungePool containedIn a Basin .
Every Pond containedIn a Basin .
Every Pool containedIn a Basin .
Every Pot containedIn a Basin .
Every TypicalBasin.Container is a Basin that contains a Water .
No Basin is a AreaOfLand .
No Basin is a Bank .
No Basin is a Bed .
No Basin is a BodyOfWater .
No Basin is a CanalStretch .
No Basin is a Channel .
No Basin is a DisusedCanalStretch .
No Basin is a DryDisusedCanalStretch .
No Basin is a Ford .
No Basin is a Pipe .
No Basin is a Sink .
No Basin is a Structure .
No Canal is a Basin .
No DryCanalStretch is a Basin .
No Flume is a Basin .

Bay

Every Bay directlyLocatedIn something that is a Lake or that is a Sea .
Every Bay hasFootprint a Footprint .
Every Bay indentsInto a Land .
Every Bay is a BodyOfWater .
Every Bay isPartOf something that is a Lake or that is a Sea .
No Bay is a Confluence .
No Bay is a Lake .
No Bay is a Pool .
No Bay is a Pool.InRiver .
No Bay is a Rapids .
No Bay is a Stream .
No Estuary is a Bay .
No Inlet is a Bay .
No Leat is a Bay .
No Pond is a Bay .
No Reservoir is a Bay .
No River is a Bay .
No RiverMouth is a Bay .
No RiverStretch is a Bay .
No Sea is a Bay .
No Spring is a Bay .
No Whirlpool is a Bay .

Beck

Every Beck hasRegionalSynonym a Stream that hasDirectGeographicLocation Northern_England .
Every Beck is a Stream .
No Beck is a Bourne .
No Beck is a Burn .
No Beck is a InfluentStream .
No Beck is a MillStream .
No Brook is a Beck .
No Lode is a Beck .
No Nant is a Beck .
No Rivulet is a Beck .
No Syke is a Beck .

Bed

Every Basin is something that hasPart a Bank and that hasPart a Bed .
Every Bed hasFootprint a Footprint .
Every Bed is a HydrologyConcepts .
Every Bed isBottomOf something that is a Basin or that is a Channel .
Every Bed that isBottomOf a Channel is a ChannelBed .
Every Bed that isBottomOf a Channel that contains a River is a RiverBed .
Every ChannelBed is a Bed that isBottomOf a Channel .
Every RiverBed is a Bed that isBottomOf a Channel that contains a River .
No AreaOfLand is a Bed .
No Basin is a Bed .
No Bed is a Bank .
No Bed is a Channel .
No Bed is a DisusedCanalStretch .
No Bed is a DryDisusedCanalStretch .
No Bed is a Sink .
No BodyOfWater is a Bed .
No Canal is a Bed .
No CanalStretch is a Bed .
No DryCanalStretch is a Bed .
No Flume is a Bed .
No Ford is a Bed .
No Pipe is a Bed .
No Structure is a Bed .

Bird

Every Bird is a Animal .
Every Duck is a Bird .
Every GameBird is a Bird .
No Livestock is a Bird .

Boating

Every Boating is a LeisureActivity .
Every BoatingLake is a Pond that hasPrimaryPurpose a Boating .
Every Canal.Water is something that enables a Boating or that enables a Fishing .
Every Lake is something that enables a Boating and that enables a Fishing .
Every Pond that hasPrimaryPurpose a Boating is a BoatingLake .
No CaptureOfGameBirds is a Boating .
No Curling is a Boating .
No Fishing is a Boating .
No ModelBoating is a Boating .

BoatingLake

BoatingLake hasSynonym " Boating Lake " .
Every BoatingLake is a Pond that hasPrimaryPurpose a Boating .
Every Pond that hasPrimaryPurpose a Boating is a BoatingLake .

BodyOfWater

Every Aber is a BodyOfWater .
Every Axiom_1 contains a BodyOfWater .
Every Axiom_1 hasPart something that contains a BodyOfWater .
Every Axiom_2 contains a BodyOfWater .
Every Bay is a BodyOfWater .
Every BodyOfWater hasFootprint a Footprint .
Every BodyOfWater is a HydrologyConcepts .
Every BodyOfWater madeOf a Water .
Every BodyOfWater that containedIn a Canal.Channel and that hasPrimaryPurpose a InlandNavigation is a Canal.Water .
Every BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation is a DisusedCanal.Water .
Every BodyOfWater that isDirectComponentOf a Canal and that hasPrimaryPurpose a WaterSupplyToCanal is a CanalFeeder .
Every Canal.Water is a BodyOfWater that containedIn a Canal.Channel and that hasPrimaryPurpose a InlandNavigation .
Every CanalFeeder is a BodyOfWater that isDirectComponentOf a Canal and that hasPrimaryPurpose a WaterSupplyToCanal .
Every Confluence is a BodyOfWater .
Every DisusedCanal.Water is a BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation .
Every Estuary is a BodyOfWater .
Every Inlet is a BodyOfWater .
Every Lake is a BodyOfWater .
Every Leat is a BodyOfWater .
Every Pond is a BodyOfWater .
Every Pool is a BodyOfWater .
Every Pool.InRiver containedIn a BodyOfWater .
Every Pool.InRiver is a BodyOfWater .
Every Rapids is a BodyOfWater .
Every Reservoir is a BodyOfWater .
Every River is a BodyOfWater .
Every RiverMouth is a BodyOfWater .
Every RiverStretch is a BodyOfWater .
Every Sea is a BodyOfWater .
Every Spring is a BodyOfWater .
Every Stream is a BodyOfWater .
Every Whirlpool is a BodyOfWater .
Everything that hasPart something that contains a BodyOfWater is a Axiom_1 .
No AreaOfLand is a BodyOfWater .
No Basin is a BodyOfWater .
No BodyOfWater is a Bank .
No BodyOfWater is a Bed .
No BodyOfWater is a Channel .
No BodyOfWater is a DisusedCanalStretch .
No BodyOfWater is a DryDisusedCanalStretch .
No BodyOfWater is a Pipe .
No BodyOfWater is a Sink .
No Canal is a BodyOfWater .
No CanalStretch is a BodyOfWater .
No DryCanalStretch is a BodyOfWater .
No Flume is a BodyOfWater .
No Ford is a BodyOfWater .
No Structure is a BodyOfWater .

Bog

Every Bog contains a Peat .
Every Bog is a Wetland .
Every Bog that fedBy a RainWater is a TypicalBog .
Every TypicalBog is a Bog that fedBy a RainWater .
No Bog is a Swamp .
No Fen is a Bog .
No Marsh is a Bog .

Boulder

Every Cascade flowsOver at least 2 things that are a Boulder or that are a RockStep .
No Boulder is a Animal .
No Boulder is a Escarpment .
No Boulder is a LeisureActivity .
No Boulder is a Mill .
No Boulder is a Process .
No Boulder is a RockStep .
No Boulder is a Valley .
No Cave is a Boulder .
No Cliff is a Boulder .
No Connection is a Boulder .
No ContainmentOfSalmon is a Boulder .
No ContainmentOfWater is a Boulder .
No Cover is a Boulder .
No Dyke.Rock is a Boulder .
No Embankment is a Boulder .
No FishMigration is a Boulder .
No Flood is a Boulder .
No FloodPrevention is a Boulder .
No Footprint is a Boulder .
No GroundSurface is a Boulder .
No Hill is a Boulder .
No HydrologyConcepts is a Boulder .
No IndustrialArea is a Boulder .
No Industry is a Boulder .
No InlandNavigation is a Boulder .
No Land is a Boulder .
No Modifier is a Boulder .
No Mountain is a Boulder .
No PastureLand is a Boulder .
No Path is a Boulder .
No PoliticalGeographicArea is a Boulder .
No Property is a Boulder .
No RiverCrossing is a Boulder .
No Road is a Boulder .
No Slope is a Boulder .
No StreamCrossing is a Boulder .
No Substance is a Boulder .
No TemporalConcept is a Boulder .
No Track is a Boulder .

Bourne

Bourne hasSynonym " Winterbourne " .
Every Bourne containedIn a Channel .
Every Bourne is a Stream .
Every Bourne seasonallyExistsDuring a Winter .
No Beck is a Bourne .
No Bourne is a Burn .
No Bourne is a InfluentStream .
No Bourne is a MillStream .
No Brook is a Bourne .
No Lode is a Bourne .
No Nant is a Bourne .
No Rivulet is a Bourne .
No Syke is a Bourne .

BraidedRiver

BraidedRiver hasSynonym " Braided River " .
Every BraidedRiver is a River that hasDirectComponent a BraidedRiverStretch .
Every BraidedRiverStretch isDirectComponentOf a BraidedRiver .
Every River that hasDirectComponent a BraidedRiverStretch is a BraidedRiver .

BraidedRiverStretch

BraidedRiverStretch hasSynonym " Braided River Stretch " .
Every BraidedRiver is a River that hasDirectComponent a BraidedRiverStretch .
Every BraidedRiverStretch is a RiverStretch that flowsIn at least 2 Channel .
Every BraidedRiverStretch isDirectComponentOf a BraidedRiver .
Every River that hasDirectComponent a BraidedRiverStretch is a BraidedRiver .
Every RiverStretch that flowsIn at least 2 Channel is a BraidedRiverStretch .

Broad

Broad_5 is a Broad .
Every Broad is a Lake .
Every Broad that hasDirectGeographicLocation East_Anglia is a TypicalBroad .
Every TypicalBroad is a Broad that hasDirectGeographicLocation East_Anglia .

Broad_5

Broad_5 is a Broad .

Brook

Every Brook hasRegionalSynonym a Stream that hasDirectGeographicLocation England .
Every Brook is a Stream .
No Brook is a Beck .
No Brook is a Bourne .
No Brook is a Burn .
No Brook is a InfluentStream .
No Brook is a Lode .
No Brook is a MillStream .
No Brook is a Nant .
No Brook is a Rivulet .
No Brook is a Syke .

Burn

Every Burn hasRegionalSynonym a Stream that hasDirectGeographicLocation Northern_England or that hasDirectGeographicLocation Scotland or that hasDirectGeographicLocation nothing but something that is Northern_England or that is Scotland .
Every Burn is a Stream .
No Beck is a Burn .
No Bourne is a Burn .
No Brook is a Burn .
No Burn is a MillStream .
No InfluentStream is a Burn .
No Lode is a Burn .
No Nant is a Burn .
No Rivulet is a Burn .
No Syke is a Burn .

Canal

Every BalancingPond that adjacentTo a Canal is a TypicalBalancingPond .
Every BodyOfWater that isDirectComponentOf a Canal and that hasPrimaryPurpose a WaterSupplyToCanal is a CanalFeeder .
Every Canal connectedTo nothing but something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Canal connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Canal hasDirectComponent something that is a CanalStretch or that is a DryCanalStretch .
Every Canal hasFootprint a Footprint .
Every Canal is a HydrologyConcepts .
Every CanalFeeder is a BodyOfWater that isDirectComponentOf a Canal and that hasPrimaryPurpose a WaterSupplyToCanal .
Every CanalStretch isDirectComponentOf a Canal .
Every CatchDrain is something that locatedNear a Canal or that locatedNear a Hill .
Every DisusedCanalStretch isDirectComponentOf a Canal .
Every DryCanalStretch isDirectComponentOf a Canal .
Every DryDisusedCanalStretch isDirectComponentOf a Canal .
Every IrrigationCanal is a Canal .
Every Lake directlyConnectedTo nothing but something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every Lake directlyConnectedTo something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every LockGate isDirectComponentOf a Canal .
Every NavigationalCut is a Canal .
Every River connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Stream .
Every SluiceGate isDirectComponentOf a Canal .
Every TypicalBalancingPond is a BalancingPond that adjacentTo a Canal .
Every WaterSupply that supplyTo a Canal is a WaterSupplyToCanal .
Every WaterSupplyToCanal is a WaterSupply that supplyTo a Canal .
No Canal is a AreaOfLand .
No Canal is a Bank .
No Canal is a Basin .
No Canal is a Bed .
No Canal is a BodyOfWater .
No Canal is a CanalStretch .
No Canal is a Channel .
No Canal is a DisusedCanalStretch .
No Canal is a DryCanalStretch .
No Canal is a DryDisusedCanalStretch .
No Canal is a Ford .
No Canal is a Pipe .
No Canal is a Sink .
No Canal is a Structure .
No Flume is a Canal .

Canal.Channel

Canal.Channel hasSynonym " Canal " .
Every BodyOfWater that containedIn a Canal.Channel and that hasPrimaryPurpose a InlandNavigation is a Canal.Water .
Every BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation is a DisusedCanal.Water .
Every Canal.Channel hasPrimaryPurpose a ContainmentOfWater .
Every Canal.Channel is a Channel that isDirectComponentOf something that is a CanalStretch or that is a DryCanalStretch .
Every Canal.Water is a BodyOfWater that containedIn a Canal.Channel and that hasPrimaryPurpose a InlandNavigation .
Every CanalStretch hasDirectComponent a Canal.Channel .
Every Channel that isDirectComponentOf something that is a CanalStretch or that is a DryCanalStretch is a Canal.Channel .
Every DisusedCanal.Water is a BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation .
Every DisusedCanalStretch hasDirectComponent a Canal.Channel .
Every DryCanalStretch hasDirectComponent a Canal.Channel .
Every DryDisusedCanalStretch hasDirectComponent a Canal.Channel .

Canal.Water

Every BodyOfWater that containedIn a Canal.Channel and that hasPrimaryPurpose a InlandNavigation is a Canal.Water .
Every Canal.Water is a BodyOfWater that containedIn a Canal.Channel and that hasPrimaryPurpose a InlandNavigation .
Every Canal.Water is something that enables a Boating or that enables a Fishing .
Every Canal.Water isDirectComponentOf a CanalStretch .
Every CanalStretch hasDirectComponent a Canal.Water .
Every Confluence isComponentOf something that is a Canal.Water or that is a River or that is a Stream .
Every Pond directlyConnectedTo nothing but something that is a Canal.Water or that is a River or that is a Stream .
Every Pool directlyConnectedTo nothing but something that is a Canal.Water or that is a River or that is a Stream .
Every Waterway is something that hasPrimaryPurpose a InlandNavigation , and that is a Canal.Water or that is a River .
Every Wetland directlyConnectedTo nothing but something that is a Canal.Water or that is a Lake or that is a Pond or that is a Pool or that is a River or that is a Stream or that is a Wetland .
Everything that hasPrimaryPurpose a InlandNavigation , and that is a Canal.Water or that is a River is a Waterway .
No Canal.Water hasCurrent a Current .
No DryCanalStretch hasDirectComponent a Canal.Water .
No DryDisusedCanalStretch hasDirectComponent a Canal.Water .

CanalFeeder

CanalFeeder hasSynonym " Canal Feeder " .
Every BodyOfWater that isDirectComponentOf a Canal and that hasPrimaryPurpose a WaterSupplyToCanal is a CanalFeeder .
Every CanalFeeder containedIn a Channel .
Every CanalFeeder controlledBy a SluiceGate .
Every CanalFeeder directlyConnectedTo exactly 1 CanalStretch .
Every CanalFeeder directlyConnectedTo something that is a River or that is a Stream .
Every CanalFeeder is a BodyOfWater that isDirectComponentOf a Canal and that hasPrimaryPurpose a WaterSupplyToCanal .

CanalStretch

CanalStretch hasSynonym " Canal Stretch " .
Every Canal hasDirectComponent something that is a CanalStretch or that is a DryCanalStretch .
Every Canal.Channel is a Channel that isDirectComponentOf something that is a CanalStretch or that is a DryCanalStretch .
Every Canal.Water isDirectComponentOf a CanalStretch .
Every CanalFeeder directlyConnectedTo exactly 1 CanalStretch .
Every CanalStretch directlyConnectedTo at most 3 things .
Every CanalStretch hasDirectComponent a Canal.Channel .
Every CanalStretch hasDirectComponent a Canal.Water .
Every CanalStretch hasFootprint a Footprint .
Every CanalStretch is a HydrologyConcepts .
Every CanalStretch is something that directlyConnectedTo a CanalStretch or that directlyConnectedTo a DryCanalStretch .
Every CanalStretch isDirectComponentOf a Canal .
Every Channel that isDirectComponentOf something that is a CanalStretch or that is a DryCanalStretch is a Canal.Channel .
Every DisusedCanalStretch directlyConnectedTo nothing but something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DisusedCanalStretch directlyConnectedTo something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DryCanalStretch is something that directlyConnectedTo a CanalStretch or that directlyConnectedTo a DryCanalStretch .
Every DryDisusedCanalStretch directlyConnectedTo nothing but something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DryDisusedCanalStretch directlyConnectedTo something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every Lock is a CanalStretch .
Every NavigationalCut hasDirectComponent exactly 1 CanalStretch .
No Basin is a CanalStretch .
No Canal is a CanalStretch .
No CanalStretch is a AreaOfLand .
No CanalStretch is a Bank .
No CanalStretch is a Bed .
No CanalStretch is a BodyOfWater .
No CanalStretch is a Channel .
No CanalStretch is a DisusedCanalStretch .
No CanalStretch is a DryDisusedCanalStretch .
No CanalStretch is a Ford .
No CanalStretch is a Pipe .
No CanalStretch is a Sink .
No CanalStretch is a Structure .
No DryCanalStretch is a CanalStretch .
No Flume is a CanalStretch .

CaptureOfGameBirds

Every CaptureOfGameBirds is a LeisureActivity .
Every DecoyPond hasPrimaryPurpose a CaptureOfGameBirds .
No CaptureOfGameBirds is a Boating .
No CaptureOfGameBirds is a Curling .
No CaptureOfGameBirds is a Fishing .
No CaptureOfGameBirds is a ModelBoating .

Cascade

Every Cascade flowsOver at least 2 things that are a Boulder or that are a RockStep .
Every Cascade is a Waterfall .

Castle

Every Castle is a Structure .
Every Moat surrounds nothing but something that is a Castle or that is a Fort .
Every Moat surrounds something that is a Castle or that is a Fort .
No Castle is a Dam .
No Castle is a Fort .
No Castle is a LockGate .
No Castle is a SalmonLadder .
No Castle is a SluiceGate .
No Castle is a Weir .
No Moat is something that surrounds a Castle and that surrounds a Fort .

Catalogue

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .

Catalogue,

[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

Cataract

Every Cataract hasShape a SheerShape .
Every Cataract is a Waterfall .

CatchDrain

CatchDrain hasSynonym " Catch Drain " .
Every CatchDrain is a Drain .
Every CatchDrain is something that locatedNear a Canal or that locatedNear a Hill .
Every CatchDrain that contains a Water is a TypicalCatchDrain .
Every TypicalCatchDrain is a CatchDrain that contains a Water .
No AgriculturalDrain is a CatchDrain .

Cave

No Cave is a Animal .
No Cave is a Boulder .
No Cave is a Connection .
No Cave is a ContainmentOfWater .
No Cave is a Embankment .
No Cave is a Escarpment .
No Cave is a Flood .
No Cave is a Footprint .
No Cave is a IndustrialArea .
No Cave is a Industry .
No Cave is a Land .
No Cave is a LeisureActivity .
No Cave is a Mill .
No Cave is a Modifier .
No Cave is a PastureLand .
No Cave is a Path .
No Cave is a PoliticalGeographicArea .
No Cave is a Process .
No Cave is a RiverCrossing .
No Cave is a Road .
No Cave is a RockStep .
No Cave is a Valley .
No Cliff is a Cave .
No ContainmentOfSalmon is a Cave .
No Cover is a Cave .
No Dyke.Rock is a Cave .
No FishMigration is a Cave .
No FloodPrevention is a Cave .
No GroundSurface is a Cave .
No Hill is a Cave .
No HydrologyConcepts is a Cave .
No InlandNavigation is a Cave .
No Mountain is a Cave .
No Property is a Cave .
No Slope is a Cave .
No StreamCrossing is a Cave .
No Substance is a Cave .
No TemporalConcept is a Cave .
No Track is a Cave .

Chalk

Every Chalk is a Substance .
Every InfluentStream flowsOver something that is a Chalk or that is a Limestone .
No Chalk is a Limestone .
No MineralSalts is a Chalk .
No Peat is a Chalk .
No Water is a Chalk .

Channel

Every Bank isEdgeOf something that is a Basin or that is a Channel .
Every Bank that isEdgeOf a Channel is a ChannelBank .
Every Bank that isEdgeOf a Channel that contains a River is a RiverBank .
Every Basin directlyConnectedTo nothing but something that is a Basin or that is a Channel or that is a Pipe .
Every Bed isBottomOf something that is a Basin or that is a Channel .
Every Bed that isBottomOf a Channel is a ChannelBed .
Every Bed that isBottomOf a Channel that contains a River is a RiverBed .
Every Bourne containedIn a Channel .
Every BraidedRiverStretch is a RiverStretch that flowsIn at least 2 Channel .
Every Canal.Channel is a Channel that isDirectComponentOf something that is a CanalStretch or that is a DryCanalStretch .
Every CanalFeeder containedIn a Channel .
Every Channel enables a ContainmentOfWater .
Every Channel hasFootprint a Footprint .
Every Channel is a HydrologyConcepts .
Every Channel is something that connectedTo a Basin or that connectedTo a Channel or that connectedTo a Pipe or that connectedTo a Wetland .
Every Channel that contains a Leat is a Leat.Channel .
Every Channel that contains a Water is a TypicalChannel .
Every Channel that isDirectComponentOf something that is a CanalStretch or that is a DryCanalStretch is a Canal.Channel .
Every ChannelBank is a Bank that isEdgeOf a Channel .
Every ChannelBed is a Bed that isBottomOf a Channel .
Every Conduit.Channel is a Channel .
Every Ditch is a Channel .
Every Flume is something that is a Channel or that is a Pipe .
Every Gully is a Channel .
Every Leat containedIn a Channel .
Every Leat.Channel is a Channel that contains a Leat .
Every MillRace is a Channel .
Every Moat is a Channel .
Every OverflowChannel is a Channel .
Every Pipe directlyConnectedTo nothing but something that is a Basin or that is a Channel or that is a Pipe .
Every Pipe directlyConnectedTo something that is a Basin or that is a Channel or that is a Pipe .
Every River flowsIn a Channel .
Every RiverBank is a Bank that isEdgeOf a Channel that contains a River .
Every RiverBed is a Bed that isBottomOf a Channel that contains a River .
Every RiverStretch flowsIn a Channel .
Every RiverStretch that flowsIn at least 2 Channel is a BraidedRiverStretch .
Every Stream flowsIn a Channel .
Every TypicalChannel is a Channel that contains a Water .
No AreaOfLand is a Channel .
No Basin is a Channel .
No Bed is a Channel .
No BodyOfWater is a Channel .
No Canal is a Channel .
No CanalStretch is a Channel .
No Channel is a Bank .
No Channel is a DisusedCanalStretch .
No Channel is a DryDisusedCanalStretch .
No Channel is a Sink .
No DryCanalStretch is a Channel .
No Ford is a Channel .
No Pipe is a Channel .
No Structure is a Channel .

ChannelBank

ChannelBank hasSynonym " Bank " .
ChannelBank hasSynonym " Channel Bank " .
Every Bank that isEdgeOf a Channel is a ChannelBank .
Every ChannelBank is a Bank that isEdgeOf a Channel .

ChannelBed

ChannelBed hasSynonym " Bed " .
ChannelBed hasSynonym " Channel Bed " .
Every Bed that isBottomOf a Channel is a ChannelBed .
Every ChannelBed is a Bed that isBottomOf a Channel .

CircularDirection

Every CircularDirection is a Direction .
Every Whirlpool hasCurrent a Current that hasFlowDirection a CircularDirection .

Cliff

No Cliff is a Animal .
No Cliff is a Boulder .
No Cliff is a Cave .
No Cliff is a Connection .
No Cliff is a ContainmentOfSalmon .
No Cliff is a ContainmentOfWater .
No Cliff is a Dyke.Rock .
No Cliff is a Embankment .
No Cliff is a Escarpment .
No Cliff is a Flood .
No Cliff is a Footprint .
No Cliff is a GroundSurface .
No Cliff is a Hill .
No Cliff is a IndustrialArea .
No Cliff is a Industry .
No Cliff is a Land .
No Cliff is a LeisureActivity .
No Cliff is a Mill .
No Cliff is a Modifier .
No Cliff is a Mountain .
No Cliff is a PastureLand .
No Cliff is a Path .
No Cliff is a PoliticalGeographicArea .
No Cliff is a Process .
No Cliff is a RiverCrossing .
No Cliff is a Road .
No Cliff is a RockStep .
No Cliff is a StreamCrossing .
No Cliff is a Substance .
No Cliff is a Valley .
No Cover is a Cliff .
No FishMigration is a Cliff .
No FloodPrevention is a Cliff .
No HydrologyConcepts is a Cliff .
No InlandNavigation is a Cliff .
No Property is a Cliff .
No Slope is a Cliff .
No TemporalConcept is a Cliff .
No Track is a Cliff .

Conduit.Channel

Conduit.Channel hasSynonym " Conduit " .
Every Conduit.Channel is a Channel .
No Conduit.Channel is a Ditch .
No Conduit.Channel is a Gully .
No Conduit.Channel is a MillRace .
No Moat is a Conduit.Channel .
No OverflowChannel is a Conduit.Channel .

Conduit.Pipe

Conduit.Pipe hasSynonym " Conduit " .
Every Conduit.Pipe is a Pipe .
No Culvert is a Conduit.Pipe .

Confluence

Every Aber hasRegionalSynonym something that hasDirectGeographicLocation Wales , and that is a Confluence or that is a RiverMouth .
Every Aber is something that is a Confluence or that is a RiverMouth .
Every Confluence is a BodyOfWater .
Every Confluence isComponentOf something that is a Canal.Water or that is a River or that is a Stream .
Every Confluence isConnecting at least 2 things .
Everything that is a Confluence or that is a RiverMouth is a Aber .
No Bay is a Confluence .
No Confluence is a Pool .
No Confluence is a Pool.InRiver .
No Confluence is a Rapids .
No Confluence is a Stream .
No Estuary is a Confluence .
No Inlet is a Confluence .
No Lake is a Confluence .
No Leat is a Confluence .
No Pond is a Confluence .
No Reservoir is a Confluence .
No River is a Confluence .
No RiverMouth is a Confluence .
No RiverStretch is a Confluence .
No Sea is a Confluence .
No Spring is a Confluence .
No Whirlpool is a Confluence .

Connection

Every Estuary providesConnection a Connection that connectionFrom a River and that connectionTo exactly 1 Sea .
Every RiverMouth providesConnection a Connection that connectionFrom exactly 1 River and that connectionTo something that is a Lake or that is a River or that is a Sea .
No Cave is a Connection .
No Cliff is a Connection .
No Connection is a Animal .
No Connection is a Boulder .
No Connection is a ContainmentOfWater .
No Connection is a Escarpment .
No Connection is a Flood .
No Connection is a Footprint .
No Connection is a Hollow .
No Connection is a IndustrialArea .
No Connection is a Industry .
No Connection is a Land .
No Connection is a LeisureActivity .
No Connection is a Mill .
No Connection is a Modifier .
No Connection is a PastureLand .
No Connection is a Path .
No Connection is a PoliticalGeographicArea .
No Connection is a Process .
No Connection is a RiverCrossing .
No Connection is a Road .
No Connection is a RockStep .
No Connection is a Valley .
No ContainmentOfSalmon is a Connection .
No Cover is a Connection .
No Dyke.Rock is a Connection .
No Embankment is a Connection .
No FishMigration is a Connection .
No FloodPrevention is a Connection .
No GroundSurface is a Connection .
No Hill is a Connection .
No Hole is a Connection .
No HydrologyConcepts is a Connection .
No InlandNavigation is a Connection .
No Mountain is a Connection .
No Property is a Connection .
No Slope is a Connection .
No StreamCrossing is a Connection .
No Substance is a Connection .
No TemporalConcept is a Connection .
No Track is a Connection .

ContainmentOfSalmon

Every SalmonCatch hasPrimaryPurpose a ContainmentOfSalmon .
No Cliff is a ContainmentOfSalmon .
No ContainmentOfSalmon is a Animal .
No ContainmentOfSalmon is a Boulder .
No ContainmentOfSalmon is a Cave .
No ContainmentOfSalmon is a Connection .
No ContainmentOfSalmon is a ContainmentOfWater .
No ContainmentOfSalmon is a Dyke.Rock .
No ContainmentOfSalmon is a Embankment .
No ContainmentOfSalmon is a Escarpment .
No ContainmentOfSalmon is a Flood .
No ContainmentOfSalmon is a Footprint .
No ContainmentOfSalmon is a IndustrialArea .
No ContainmentOfSalmon is a Industry .
No ContainmentOfSalmon is a Land .
No ContainmentOfSalmon is a LeisureActivity .
No ContainmentOfSalmon is a Mill .
No ContainmentOfSalmon is a Modifier .
No ContainmentOfSalmon is a Mountain .
No ContainmentOfSalmon is a PastureLand .
No ContainmentOfSalmon is a Path .
No ContainmentOfSalmon is a PoliticalGeographicArea .
No ContainmentOfSalmon is a Process .
No ContainmentOfSalmon is a RiverCrossing .
No ContainmentOfSalmon is a Road .
No ContainmentOfSalmon is a RockStep .
No ContainmentOfSalmon is a Valley .
No Cover is a ContainmentOfSalmon .
No FishMigration is a ContainmentOfSalmon .
No FloodPrevention is a ContainmentOfSalmon .
No GroundSurface is a ContainmentOfSalmon .
No Hill is a ContainmentOfSalmon .
No HydrologyConcepts is a ContainmentOfSalmon .
No InlandNavigation is a ContainmentOfSalmon .
No Property is a ContainmentOfSalmon .
No Slope is a ContainmentOfSalmon .
No StreamCrossing is a ContainmentOfSalmon .
No Substance is a ContainmentOfSalmon .
No TemporalConcept is a ContainmentOfSalmon .
No Track is a ContainmentOfSalmon .

ContainmentOfWater

Every Canal.Channel hasPrimaryPurpose a ContainmentOfWater .
Every Channel enables a ContainmentOfWater .
Every Pipe enables a ContainmentOfWater .
No Cave is a ContainmentOfWater .
No Cliff is a ContainmentOfWater .
No Connection is a ContainmentOfWater .
No ContainmentOfSalmon is a ContainmentOfWater .
No ContainmentOfWater is a Animal .
No ContainmentOfWater is a Boulder .
No ContainmentOfWater is a Escarpment .
No ContainmentOfWater is a Flood .
No ContainmentOfWater is a IndustrialArea .
No ContainmentOfWater is a Industry .
No ContainmentOfWater is a LeisureActivity .
No ContainmentOfWater is a Mill .
No ContainmentOfWater is a Modifier .
No ContainmentOfWater is a Path .
No ContainmentOfWater is a PoliticalGeographicArea .
No ContainmentOfWater is a Process .
No ContainmentOfWater is a RiverCrossing .
No ContainmentOfWater is a Road .
No ContainmentOfWater is a RockStep .
No ContainmentOfWater is a Valley .
No Cover is a ContainmentOfWater .
No Dyke.Rock is a ContainmentOfWater .
No Embankment is a ContainmentOfWater .
No FishMigration is a ContainmentOfWater .
No FloodPrevention is a ContainmentOfWater .
No Footprint is a ContainmentOfWater .
No GroundSurface is a ContainmentOfWater .
No Hill is a ContainmentOfWater .
No HydrologyConcepts is a ContainmentOfWater .
No InlandNavigation is a ContainmentOfWater .
No Land is a ContainmentOfWater .
No Mountain is a ContainmentOfWater .
No PastureLand is a ContainmentOfWater .
No Property is a ContainmentOfWater .
No Slope is a ContainmentOfWater .
No StreamCrossing is a ContainmentOfWater .
No Substance is a ContainmentOfWater .
No TemporalConcept is a ContainmentOfWater .
No Track is a ContainmentOfWater .

ControlOfWaterFlow

Every ControlOfWaterFlow actsSpecificallyOn a Water .
Every ControlOfWaterFlow is a Process .
Every LockGate hasPrimaryPurpose a ControlOfWaterFlow .
Every SluiceGate hasPrimaryPurpose a ControlOfWaterFlow .
Every Weir hasPrimaryPurpose a ControlOfWaterFlow .
No ControlOfWaterFlow is a ControlOfWaterLevel .
No ControlOfWaterFlow is a Drainage .
No ControlOfWaterFlow is a TidalProcess .
No ControlOfWaterFlow is a TimberStorage .
No ControlOfWaterFlow is a TransportOfWater .
No ControlOfWaterFlow is a WaterFlowProcess .
No WaterSupply is a ControlOfWaterFlow .

ControlOfWaterLevel

Every ControlOfWaterLevel is a Process .
Every Lock hasPrimaryPurpose a ControlOfWaterLevel .
No ControlOfWaterFlow is a ControlOfWaterLevel .
No ControlOfWaterLevel is a Drainage .
No ControlOfWaterLevel is a TidalProcess .
No ControlOfWaterLevel is a TimberStorage .
No TransportOfWater is a ControlOfWaterLevel .
No WaterFlowProcess is a ControlOfWaterLevel .
No WaterSupply is a ControlOfWaterLevel .

CoolingPond

CoolingPond hasSynonym " Cooling Pond " .
Every CoolingPond directlyLocatedIn a IndustrialArea .
Every CoolingPond hasInflow a IndustrialWater .
Every CoolingPond is a Pond .

Cover

Every CoveredReservoir is a Reservoir that hasDirectComponent a Cover .
Every Reservoir that hasDirectComponent a Cover is a CoveredReservoir .
No Cover is a Animal .
No Cover is a Boulder .
No Cover is a Cave .
No Cover is a Cliff .
No Cover is a Connection .
No Cover is a ContainmentOfSalmon .
No Cover is a ContainmentOfWater .
No Cover is a Dyke.Rock .
No Cover is a Embankment .
No Cover is a Escarpment .
No Cover is a FishMigration .
No Cover is a Flood .
No Cover is a FloodPrevention .
No Cover is a Footprint .
No Cover is a GroundSurface .
No Cover is a Hill .
No Cover is a IndustrialArea .
No Cover is a Industry .
No Cover is a Land .
No Cover is a LeisureActivity .
No Cover is a Mill .
No Cover is a Modifier .
No Cover is a Mountain .
No Cover is a PastureLand .
No Cover is a Path .
No Cover is a PoliticalGeographicArea .
No Cover is a Process .
No Cover is a Property .
No Cover is a RiverCrossing .
No Cover is a Road .
No Cover is a RockStep .
No Cover is a Slope .
No Cover is a StreamCrossing .
No Cover is a Substance .
No Cover is a TemporalConcept .
No Cover is a Valley .
No HydrologyConcepts is a Cover .
No InlandNavigation is a Cover .
No Track is a Cover .

CoveredReservoir

CoveredReservoir hasSynonym " Covered Reservoir " .
Every CoveredReservoir is a HydrologyConcepts .
Every CoveredReservoir is a Reservoir that hasDirectComponent a Cover .
Every Reservoir that hasDirectComponent a Cover is a CoveredReservoir .

Culvert

Every Culvert hasPrimaryPurpose a TransportOfWater that transportsUnder a Road .
Every Culvert is a Pipe .
Every Culvert locatedUnder a GroundSurface .
No Culvert is a Conduit.Pipe .

Curling

Every Curling is a LeisureActivity .
Every CurlingPond hasPrimaryPurpose a Curling .
No CaptureOfGameBirds is a Curling .
No Curling is a Boating .
No Fishing is a Curling .
No ModelBoating is a Curling .

CurlingPond

CurlingPond hasSynonym " Curling Pond " .
Every CurlingPond hasPrimaryPurpose a Curling .
Every CurlingPond is a Pond .

Current

Every Estuary hasCurrent a Current .
Every Lake hasCurrent a Current .
Every River hasCurrent a Current .
Every Sea hasCurrent a Current .
Every Stream hasCurrent a Current .
Every TurbulentCurrent is a Current .
Every Waterfall hasCurrent a Current .
Every Whirlpool hasCurrent a Current that hasFlowDirection a CircularDirection .
Everything that is hasCurrent by something is a Current .
No Backwater hasCurrent a Current .
No Canal.Water hasCurrent a Current .
No DisusedCanal.Water hasCurrent a Current .
No Pond hasCurrent a Current .
No Pool hasCurrent a Current .
No Pool.InRiver hasCurrent a Current .

Dam

Every Dam is a Structure .
Every Dam.Water locatedBehind a Dam .
Every Reservoir controlledBy nothing but something that is a Dam or that is a SluiceGate .
Every Reservoir controlledBy something that is a Dam or that is a SluiceGate .
Every SalmonLadder locatedNear something that is a Dam or that is a Weir .
No Castle is a Dam .
No Dam is a Weir .
No Fort is a Dam .
No LockGate is a Dam .
No SalmonLadder is a Dam .
No SluiceGate is a Dam .

Dam.Water

Dam.Water hasSynonym " Dam " .
Every Dam.Water directlyLocatedIn something that is a River or that is a Stream .
Every Dam.Water is a Pool.InRiver .
Every Dam.Water locatedBehind a Dam .
No Dam.Water is a Backwater .
No Dam.Water is a Dub .

DecoyPond

DecoyPond hasSynonym " Decoy Pond " .
Every DecoyPond hasPrimaryPurpose a CaptureOfGameBirds .
Every DecoyPond is a Pond .

DewPond

DewPond hasSynonym " Dew Pond " .
Every DewPond directlyLocatedIn a PastureLand .
Every DewPond hasPrimaryPurpose a WaterSupply that supplyTo a Livestock .
Every DewPond is a Pond .
Every DewPond locatedOn a Hill .

Direction

Every CircularDirection is a Direction .
Every Direction is a Modifier .
Everything that is hasFlowDirection by something is a Direction .
No Direction is a Shape .
No Direction is a Size .
No Direction is a WaterPressure .

DisusedCanal.Water

DisusedCanal.Water hasSynonym " Disused Canal " .
Every BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation is a DisusedCanal.Water .
Every DisusedCanal.Water is a BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation .
Every DisusedCanalStretch hasDirectComponent a DisusedCanal.Water .
No DisusedCanal.Water hasCurrent a Current .
No DryDisusedCanalStretch hasDirectComponent a DisusedCanal.Water .

DisusedCanalStretch

DisusedCanalStretch hasSynonym " Disused Canal Stretch " .
Every BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation is a DisusedCanal.Water .
Every DisusedCanal.Water is a BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation .
Every DisusedCanalStretch directlyConnectedTo at most 3 things .
Every DisusedCanalStretch directlyConnectedTo nothing but something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DisusedCanalStretch directlyConnectedTo something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DisusedCanalStretch hasDirectComponent a Canal.Channel .
Every DisusedCanalStretch hasDirectComponent a DisusedCanal.Water .
Every DisusedCanalStretch hasFootprint a Footprint .
Every DisusedCanalStretch is a HydrologyConcepts .
Every DisusedCanalStretch isDirectComponentOf a Canal .
Every DryDisusedCanalStretch directlyConnectedTo nothing but something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DryDisusedCanalStretch directlyConnectedTo something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
No AreaOfLand is a DisusedCanalStretch .
No Bank is a DisusedCanalStretch .
No Basin is a DisusedCanalStretch .
No Bed is a DisusedCanalStretch .
No BodyOfWater is a DisusedCanalStretch .
No Canal is a DisusedCanalStretch .
No CanalStretch is a DisusedCanalStretch .
No Channel is a DisusedCanalStretch .
No DisusedCanalStretch is a Sink .
No Flume is a DisusedCanalStretch .
No Ford is a DisusedCanalStretch .
No Pipe is a DisusedCanalStretch .
No Structure is a DisusedCanalStretch .

Ditch

Ditch hasSynonym " Trench " .
Every Ditch enables a Drainage .
Every Ditch is a Channel .
Every Ditch that directlyLocatedIn a Field is a TypicalDitch .
Every Drain is a Ditch .
Every Dyke is a Ditch .
Every IrrigationDitch is a Ditch .
Every TypicalDitch is a Ditch that directlyLocatedIn a Field .
No Conduit.Channel is a Ditch .
No Ditch is a MillRace .
No Gully is a Ditch .
No Moat is a Ditch .
No OverflowChannel is a Ditch .

Drain

Every AgriculturalDrain is a Drain .
Every CatchDrain is a Drain .
Every Drain hasPrimaryPurpose a Drainage .
Every Drain is a Ditch .
Every Drain that directlyLocatedIn a Field is a TypicalDrain .
Every TypicalDrain is a Drain that directlyLocatedIn a Field .
No Dyke is a Drain .
No IrrigationDitch is a Drain .

Drainage

Every AgriculturalDrain hasPrimaryPurpose a Drainage .
Every Ditch enables a Drainage .
Every Drain hasPrimaryPurpose a Drainage .
Every Drainage is a Process .
Every Dyke hasPrimaryPurpose a Drainage .
Every Gully enables a Drainage .
Every OverflowChannel enables a Drainage .
No ControlOfWaterFlow is a Drainage .
No ControlOfWaterLevel is a Drainage .
No TidalProcess is a Drainage .
No TimberStorage is a Drainage .
No TransportOfWater is a Drainage .
No WaterFlowProcess is a Drainage .
No WaterSupply is a Drainage .

DryCanalStretch

DryCanalStretch hasSynonym " Dry Canal Stretch " .
Every Canal hasDirectComponent something that is a CanalStretch or that is a DryCanalStretch .
Every Canal.Channel is a Channel that isDirectComponentOf something that is a CanalStretch or that is a DryCanalStretch .
Every CanalStretch is something that directlyConnectedTo a CanalStretch or that directlyConnectedTo a DryCanalStretch .
Every Channel that isDirectComponentOf something that is a CanalStretch or that is a DryCanalStretch is a Canal.Channel .
Every DisusedCanalStretch directlyConnectedTo nothing but something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DisusedCanalStretch directlyConnectedTo something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DryCanalStretch directlyConnectedTo at most 3 things .
Every DryCanalStretch hasDirectComponent a Canal.Channel .
Every DryCanalStretch hasFootprint a Footprint .
Every DryCanalStretch is a HydrologyConcepts .
Every DryCanalStretch is something that directlyConnectedTo a CanalStretch or that directlyConnectedTo a DryCanalStretch .
Every DryCanalStretch isDirectComponentOf a Canal .
Every DryDisusedCanalStretch directlyConnectedTo nothing but something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DryDisusedCanalStretch directlyConnectedTo something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DryLock is a DryCanalStretch .
No Canal is a DryCanalStretch .
No DryCanalStretch hasDirectComponent a Canal.Water .
No DryCanalStretch is a AreaOfLand .
No DryCanalStretch is a Bank .
No DryCanalStretch is a Basin .
No DryCanalStretch is a Bed .
No DryCanalStretch is a BodyOfWater .
No DryCanalStretch is a CanalStretch .
No DryCanalStretch is a Channel .
No DryCanalStretch is a Ford .
No DryCanalStretch is a Pipe .
No DryCanalStretch is a Sink .
No DryCanalStretch is a Structure .
No Flume is a DryCanalStretch .

DryDisusedCanalStretch

DryDisusedCanalStretch hasSynonym " Dry Disused Canal Stretch " .
Every DryDisusedCanalStretch directlyConnectedTo at most 3 things .
Every DryDisusedCanalStretch directlyConnectedTo nothing but something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DryDisusedCanalStretch directlyConnectedTo something that is a CanalStretch or that is a DisusedCanalStretch or that is a DryCanalStretch .
Every DryDisusedCanalStretch hasDirectComponent a Canal.Channel .
Every DryDisusedCanalStretch hasFootprint a Footprint .
Every DryDisusedCanalStretch is a HydrologyConcepts .
Every DryDisusedCanalStretch isDirectComponentOf a Canal .
No AreaOfLand is a DryDisusedCanalStretch .
No Bank is a DryDisusedCanalStretch .
No Basin is a DryDisusedCanalStretch .
No Bed is a DryDisusedCanalStretch .
No BodyOfWater is a DryDisusedCanalStretch .
No Canal is a DryDisusedCanalStretch .
No CanalStretch is a DryDisusedCanalStretch .
No Channel is a DryDisusedCanalStretch .
No DryDisusedCanalStretch hasDirectComponent a Canal.Water .
No DryDisusedCanalStretch hasDirectComponent a DisusedCanal.Water .
No DryDisusedCanalStretch is a Sink .
No Flume is a DryDisusedCanalStretch .
No Ford is a DryDisusedCanalStretch .
No Pipe is a DryDisusedCanalStretch .
No Structure is a DryDisusedCanalStretch .

DryLock

DryLock hasSynonym " Dry Lock " .
Every DryLock directlyConnectedTo at most 2 things .
Every DryLock is a DryCanalStretch .

Dub

Every Dub is a Pool.InRiver .
No Backwater is a Dub .
No Dam.Water is a Dub .

Duck

Every Duck is a Bird .
Every DuckPond habitatFor a Duck .
No Duck is a GameBird .

DuckPond

DuckPond hasSynonym " Duck Pond " .
Every DuckPond habitatFor a Duck .
Every DuckPond is a Pond .

Duration

Every Duration is a TemporalConcept .
Every Season is a Duration .
No Frequency is a Duration .

Dyke

Dyke hasSynonym " Dike " .
Every Dyke hasPrimaryPurpose a Drainage .
Every Dyke is a Ditch .
No Dyke is a Drain .
No Dyke is a IrrigationDitch .

Dyke.Rock

Every DykeSpring locatedAt a Dyke.Rock .
No Cliff is a Dyke.Rock .
No ContainmentOfSalmon is a Dyke.Rock .
No Cover is a Dyke.Rock .
No Dyke.Rock is a Animal .
No Dyke.Rock is a Boulder .
No Dyke.Rock is a Cave .
No Dyke.Rock is a Connection .
No Dyke.Rock is a ContainmentOfWater .
No Dyke.Rock is a Embankment .
No Dyke.Rock is a Escarpment .
No Dyke.Rock is a Flood .
No Dyke.Rock is a Footprint .
No Dyke.Rock is a IndustrialArea .
No Dyke.Rock is a Industry .
No Dyke.Rock is a Land .
No Dyke.Rock is a LeisureActivity .
No Dyke.Rock is a Mill .
No Dyke.Rock is a Modifier .
No Dyke.Rock is a PastureLand .
No Dyke.Rock is a Path .
No Dyke.Rock is a PoliticalGeographicArea .
No Dyke.Rock is a Process .
No Dyke.Rock is a RiverCrossing .
No Dyke.Rock is a Road .
No Dyke.Rock is a RockStep .
No Dyke.Rock is a Valley .
No FishMigration is a Dyke.Rock .
No FloodPrevention is a Dyke.Rock .
No GroundSurface is a Dyke.Rock .
No Hill is a Dyke.Rock .
No HydrologyConcepts is a Dyke.Rock .
No InlandNavigation is a Dyke.Rock .
No Mountain is a Dyke.Rock .
No Property is a Dyke.Rock .
No Slope is a Dyke.Rock .
No StreamCrossing is a Dyke.Rock .
No Substance is a Dyke.Rock .
No TemporalConcept is a Dyke.Rock .
No Track is a Dyke.Rock .

DykeSpring

DykeSpring hasSynonym " Dike Spring " .
DykeSpring hasSynonym " Dyke Spring " .
Every DykeSpring is a Spring .
Every DykeSpring locatedAt a Dyke.Rock .
No Spa is a DykeSpring .
No Spout is a DykeSpring .

East_Anglia

Every Broad that hasDirectGeographicLocation East_Anglia is a TypicalBroad .
Every TypicalBroad is a Broad that hasDirectGeographicLocation East_Anglia .

Embankment

Every Embankment hasFootprint a Footprint .
Every Embankment is something .
Every Lode locatedOn a Embankment .
No Cave is a Embankment .
No Cliff is a Embankment .
No ContainmentOfSalmon is a Embankment .
No Cover is a Embankment .
No Dyke.Rock is a Embankment .
No Embankment is a Animal .
No Embankment is a Boulder .
No Embankment is a Connection .
No Embankment is a ContainmentOfWater .
No Embankment is a Escarpment .
No Embankment is a Flood .
No Embankment is a Footprint .
No Embankment is a IndustrialArea .
No Embankment is a Industry .
No Embankment is a Land .
No Embankment is a LeisureActivity .
No Embankment is a Mill .
No Embankment is a Modifier .
No Embankment is a PastureLand .
No Embankment is a Path .
No Embankment is a PoliticalGeographicArea .
No Embankment is a Process .
No Embankment is a RiverCrossing .
No Embankment is a Road .
No Embankment is a RockStep .
No Embankment is a Valley .
No FishMigration is a Embankment .
No FloodPrevention is a Embankment .
No GroundSurface is a Embankment .
No Hill is a Embankment .
No HydrologyConcepts is a Embankment .
No InlandNavigation is a Embankment .
No Mountain is a Embankment .
No Property is a Embankment .
No Slope is a Embankment .
No StreamCrossing is a Embankment .
No Substance is a Embankment .
No TemporalConcept is a Embankment .
No Track is a Embankment .

England

Every Brook hasRegionalSynonym a Stream that hasDirectGeographicLocation England .

Escarpment

No Animal is a Escarpment .
No Boulder is a Escarpment .
No Cave is a Escarpment .
No Cliff is a Escarpment .
No Connection is a Escarpment .
No ContainmentOfSalmon is a Escarpment .
No ContainmentOfWater is a Escarpment .
No Cover is a Escarpment .
No Dyke.Rock is a Escarpment .
No Embankment is a Escarpment .
No FishMigration is a Escarpment .
No Flood is a Escarpment .
No FloodPrevention is a Escarpment .
No Footprint is a Escarpment .
No GroundSurface is a Escarpment .
No Hill is a Escarpment .
No HydrologyConcepts is a Escarpment .
No IndustrialArea is a Escarpment .
No Industry is a Escarpment .
No InlandNavigation is a Escarpment .
No Land is a Escarpment .
No LeisureActivity is a Escarpment .
No Mill is a Escarpment .
No Modifier is a Escarpment .
No Mountain is a Escarpment .
No PastureLand is a Escarpment .
No Path is a Escarpment .
No PoliticalGeographicArea is a Escarpment .
No Process is a Escarpment .
No Property is a Escarpment .
No RiverCrossing is a Escarpment .
No Road is a Escarpment .
No RockStep is a Escarpment .
No Slope is a Escarpment .
No StreamCrossing is a Escarpment .
No Substance is a Escarpment .
No TemporalConcept is a Escarpment .
No Track is a Escarpment .
No Valley is a Escarpment .

Estuary

Every Estuary hasCurrent a Current .
Every Estuary is a BodyOfWater .
Every Estuary isDirectComponentOf a Sea .
Every Estuary providesConnection a Connection that connectionFrom a River and that connectionTo exactly 1 Sea .
Every Inlet directlyLocatedIn something that is a Estuary or that is a Lake or that is a River or that is a Sea .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
No Estuary is a Bay .
No Estuary is a Confluence .
No Estuary is a Lake .
No Estuary is a Pool .
No Estuary is a Pool.InRiver .
No Estuary is a Rapids .
No Estuary is a Stream .
No Estuary is a Whirlpool .
No Inlet is a Estuary .
No Leat is a Estuary .
No Pond is a Estuary .
No Reservoir is a Estuary .
No River is a Estuary .
No RiverMouth is a Estuary .
No RiverStretch is a Estuary .
No Sea is a Estuary .
No Spring is a Estuary .

FallingWater

Every FallingWater is a Water .

Feature

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .

Fen

Every Fen contains a Peat .
Every Fen is a Wetland .
Every Fen that fedBy a GroundWater is a TypicalFen .
Every TypicalFen is a Fen that fedBy a GroundWater .
No Fen is a Bog .
No Fen is a Marsh .
No Fen is a Swamp .

Field

Every AgriculturalField is a Field .
Every Ditch that directlyLocatedIn a Field is a TypicalDitch .
Every Drain that directlyLocatedIn a Field is a TypicalDrain .
Every Field is a AreaOfLand .
Every Meadow is a Field .
Every TypicalDitch is a Ditch that directlyLocatedIn a Field .
Every TypicalDrain is a Drain that directlyLocatedIn a Field .
No Floodplain is a Field .
No Wetland is a Field .

FishMigration

Every SalmonLadder hasPrimaryPurpose a FishMigration .
No Cover is a FishMigration .
No FishMigration is a Animal .
No FishMigration is a Boulder .
No FishMigration is a Cave .
No FishMigration is a Cliff .
No FishMigration is a Connection .
No FishMigration is a ContainmentOfSalmon .
No FishMigration is a ContainmentOfWater .
No FishMigration is a Dyke.Rock .
No FishMigration is a Embankment .
No FishMigration is a Escarpment .
No FishMigration is a Flood .
No FishMigration is a Footprint .
No FishMigration is a GroundSurface .
No FishMigration is a Hill .
No FishMigration is a IndustrialArea .
No FishMigration is a Industry .
No FishMigration is a Land .
No FishMigration is a LeisureActivity .
No FishMigration is a Mill .
No FishMigration is a Modifier .
No FishMigration is a Mountain .
No FishMigration is a PastureLand .
No FishMigration is a Path .
No FishMigration is a PoliticalGeographicArea .
No FishMigration is a Process .
No FishMigration is a Property .
No FishMigration is a RiverCrossing .
No FishMigration is a Road .
No FishMigration is a RockStep .
No FishMigration is a StreamCrossing .
No FishMigration is a Substance .
No FishMigration is a Valley .
No FloodPrevention is a FishMigration .
No HydrologyConcepts is a FishMigration .
No InlandNavigation is a FishMigration .
No Slope is a FishMigration .
No TemporalConcept is a FishMigration .
No Track is a FishMigration .

FishPond

Every FishPond hasPrimaryPurpose a Fishing .
Every FishPond is a Pond .
FishPond hasSynonym " Fish Pond " .

Fishing

Every Canal.Water is something that enables a Boating or that enables a Fishing .
Every FishPond hasPrimaryPurpose a Fishing .
Every Fishing is a LeisureActivity .
Every Lake is something that enables a Boating and that enables a Fishing .
No CaptureOfGameBirds is a Fishing .
No Fishing is a Boating .
No Fishing is a Curling .
No ModelBoating is a Fishing .

Flood

Every Floodplain directLocationOf a Flood .
No Cave is a Flood .
No Cliff is a Flood .
No Connection is a Flood .
No ContainmentOfSalmon is a Flood .
No ContainmentOfWater is a Flood .
No Cover is a Flood .
No Dyke.Rock is a Flood .
No Embankment is a Flood .
No FishMigration is a Flood .
No Flood is a Animal .
No Flood is a Boulder .
No Flood is a Escarpment .
No Flood is a LeisureActivity .
No Flood is a Mill .
No Flood is a Process .
No Flood is a RiverCrossing .
No Flood is a RockStep .
No Flood is a Valley .
No FloodPrevention is a Flood .
No Footprint is a Flood .
No GroundSurface is a Flood .
No Hill is a Flood .
No HydrologyConcepts is a Flood .
No IndustrialArea is a Flood .
No Industry is a Flood .
No InlandNavigation is a Flood .
No Land is a Flood .
No Modifier is a Flood .
No Mountain is a Flood .
No PastureLand is a Flood .
No Path is a Flood .
No PoliticalGeographicArea is a Flood .
No Property is a Flood .
No Road is a Flood .
No Slope is a Flood .
No StreamCrossing is a Flood .
No Substance is a Flood .
No TemporalConcept is a Flood .
No Track is a Flood .

FloodPrevention

Every BalancingPond hasPrimaryPurpose a FloodPrevention .
No Cover is a FloodPrevention .
No FloodPrevention is a Animal .
No FloodPrevention is a Boulder .
No FloodPrevention is a Cave .
No FloodPrevention is a Cliff .
No FloodPrevention is a Connection .
No FloodPrevention is a ContainmentOfSalmon .
No FloodPrevention is a ContainmentOfWater .
No FloodPrevention is a Dyke.Rock .
No FloodPrevention is a Embankment .
No FloodPrevention is a Escarpment .
No FloodPrevention is a FishMigration .
No FloodPrevention is a Flood .
No FloodPrevention is a Footprint .
No FloodPrevention is a GroundSurface .
No FloodPrevention is a Hill .
No FloodPrevention is a IndustrialArea .
No FloodPrevention is a Industry .
No FloodPrevention is a Land .
No FloodPrevention is a LeisureActivity .
No FloodPrevention is a Mill .
No FloodPrevention is a Modifier .
No FloodPrevention is a Mountain .
No FloodPrevention is a PastureLand .
No FloodPrevention is a Path .
No FloodPrevention is a PoliticalGeographicArea .
No FloodPrevention is a Process .
No FloodPrevention is a Property .
No FloodPrevention is a RiverCrossing .
No FloodPrevention is a Road .
No FloodPrevention is a RockStep .
No FloodPrevention is a Slope .
No FloodPrevention is a StreamCrossing .
No FloodPrevention is a Substance .
No FloodPrevention is a TemporalConcept .
No FloodPrevention is a Valley .
No HydrologyConcepts is a FloodPrevention .
No InlandNavigation is a FloodPrevention .
No Track is a FloodPrevention .

Floodplain

Every Floodplain adjacentTo a River .
Every Floodplain directLocationOf a Flood .
Every Floodplain is a AreaOfLand .
Every Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water is a WaterMeadow .
Every OxbowLake locatedNear a Floodplain .
Every WaterMeadow is a Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water .
Floodplain hasSynonym " Flood Basin " .
No Floodplain is a Field .
No Floodplain is a Wetland .

Flume

Every Flume hasFootprint a Footprint .
Every Flume hasPrimaryPurpose a TransportOfWater that usedBy a Industry or that usedFor a Irrigation .
Every Flume is a HydrologyConcepts .
Every Flume is something that is a Channel or that is a Pipe .
No Flume is a AreaOfLand .
No Flume is a Bank .
No Flume is a Basin .
No Flume is a Bed .
No Flume is a BodyOfWater .
No Flume is a Canal .
No Flume is a CanalStretch .
No Flume is a DisusedCanalStretch .
No Flume is a DryCanalStretch .
No Flume is a DryDisusedCanalStretch .
No Flume is a Ford .
No Flume is a Sink .
No Flume is a Structure .

Footprint

Every AreaOfLand hasFootprint a Footprint .
Every Backwater hasFootprint a Footprint .
Every Bank hasFootprint a Footprint .
Every Basin hasFootprint a Footprint .
Every Bay hasFootprint a Footprint .
Every Bed hasFootprint a Footprint .
Every BodyOfWater hasFootprint a Footprint .
Every Canal hasFootprint a Footprint .
Every CanalStretch hasFootprint a Footprint .
Every Channel hasFootprint a Footprint .
Every DisusedCanalStretch hasFootprint a Footprint .
Every DryCanalStretch hasFootprint a Footprint .
Every DryDisusedCanalStretch hasFootprint a Footprint .
Every Embankment hasFootprint a Footprint .
Every Flume hasFootprint a Footprint .
Every Ford hasFootprint a Footprint .
Every Inlet hasFootprint a Footprint .
Every Pipe hasFootprint a Footprint .
Every Sink hasFootprint a Footprint .
Every Structure hasFootprint a Footprint .
Every Wetland hasFootprint a Footprint .
No Cave is a Footprint .
No Cliff is a Footprint .
No Connection is a Footprint .
No ContainmentOfSalmon is a Footprint .
No Cover is a Footprint .
No Dyke.Rock is a Footprint .
No Embankment is a Footprint .
No FishMigration is a Footprint .
No FloodPrevention is a Footprint .
No Footprint is a Animal .
No Footprint is a Boulder .
No Footprint is a ContainmentOfWater .
No Footprint is a Escarpment .
No Footprint is a Flood .
No Footprint is a Hollow .
No Footprint is a IndustrialArea .
No Footprint is a Industry .
No Footprint is a LeisureActivity .
No Footprint is a Mill .
No Footprint is a Modifier .
No Footprint is a Path .
No Footprint is a PoliticalGeographicArea .
No Footprint is a Process .
No Footprint is a RiverCrossing .
No Footprint is a Road .
No Footprint is a RockStep .
No Footprint is a Valley .
No GroundSurface is a Footprint .
No Hill is a Footprint .
No Hole is a Footprint .
No HydrologyConcepts is a Footprint .
No InlandNavigation is a Footprint .
No Land is a Footprint .
No Mountain is a Footprint .
No PastureLand is a Footprint .
No Property is a Footprint .
No Slope is a Footprint .
No StreamCrossing is a Footprint .
No Substance is a Footprint .
No TemporalConcept is a Footprint .
No Track is a Footprint .

Force

Every Force hasRegionalSynonym a Waterfall that hasDirectGeographicLocation Northern_England .
Every Force is a Waterfall .
Force hasSynonym " Foss " .

Ford

Every Ford hasFootprint a Footprint .
Every Ford hasPrimaryPurpose something that is a RiverCrossing or that is a StreamCrossing .
Every Ford is a HydrologyConcepts .
Every Ford isComponentOf something that is a Path or that is a Road or that is a Track .
Every Ford isComponentOf something that is a River or that is a Stream .
No Basin is a Ford .
No Canal is a Ford .
No CanalStretch is a Ford .
No DryCanalStretch is a Ford .
No Flume is a Ford .
No Ford is a AreaOfLand .
No Ford is a Bank .
No Ford is a Bed .
No Ford is a BodyOfWater .
No Ford is a Channel .
No Ford is a DisusedCanalStretch .
No Ford is a DryDisusedCanalStretch .
No Ford is a Pipe .
No Ford is a Sink .
No Ford is a Structure .

Fort

Every Fort is a Structure .
Every Moat surrounds nothing but something that is a Castle or that is a Fort .
Every Moat surrounds something that is a Castle or that is a Fort .
No Castle is a Fort .
No Fort is a Dam .
No Fort is a SalmonLadder .
No Fort is a Weir .
No LockGate is a Fort .
No Moat is something that surrounds a Castle and that surrounds a Fort .
No SluiceGate is a Fort .

Frequency

Every Frequency is a TemporalConcept .
Every Intermittent is a Frequency .
No Frequency is a Duration .

GameBird

Every GameBird is a Bird .
No Duck is a GameBird .

GroundSurface

Every Basin is a Hollow that directlyLocatedIn a GroundSurface .
Every Culvert locatedUnder a GroundSurface .
Every Sink is a Hole that locatedWhere a Stream that flowsInto a GroundSurface .
Every Spring flowsOutOf a GroundSurface .
No Cliff is a GroundSurface .
No Cover is a GroundSurface .
No FishMigration is a GroundSurface .
No FloodPrevention is a GroundSurface .
No GroundSurface is a Animal .
No GroundSurface is a Boulder .
No GroundSurface is a Cave .
No GroundSurface is a Connection .
No GroundSurface is a ContainmentOfSalmon .
No GroundSurface is a ContainmentOfWater .
No GroundSurface is a Dyke.Rock .
No GroundSurface is a Embankment .
No GroundSurface is a Escarpment .
No GroundSurface is a Flood .
No GroundSurface is a Footprint .
No GroundSurface is a Hill .
No GroundSurface is a IndustrialArea .
No GroundSurface is a Industry .
No GroundSurface is a Land .
No GroundSurface is a LeisureActivity .
No GroundSurface is a Mill .
No GroundSurface is a Modifier .
No GroundSurface is a Mountain .
No GroundSurface is a PastureLand .
No GroundSurface is a Path .
No GroundSurface is a PoliticalGeographicArea .
No GroundSurface is a Process .
No GroundSurface is a RiverCrossing .
No GroundSurface is a Road .
No GroundSurface is a RockStep .
No GroundSurface is a StreamCrossing .
No GroundSurface is a Valley .
No HydrologyConcepts is a GroundSurface .
No InlandNavigation is a GroundSurface .
No Property is a GroundSurface .
No Slope is a GroundSurface .
No Substance is a GroundSurface .
No TemporalConcept is a GroundSurface .
No Track is a GroundSurface .

GroundWater

Every Fen that fedBy a GroundWater is a TypicalFen .
Every GroundWater is a Water .
Every TypicalFen is a Fen that fedBy a GroundWater .

Gully

Every Gully enables a Drainage .
Every Gully is a Channel .
Every Rill is a Stream that flowsIn a Gully .
Every Stream that flowsIn a Gully is a Rill .
No Conduit.Channel is a Gully .
No Gully is a Ditch .
No Gully is a MillRace .
No Moat is a Gully .
No OverflowChannel is a Gully .

HighWaterPressure

Every HighWaterPressure is a WaterPressure .
Every Spout hasWaterPressure a HighWaterPressure .
Every WaterPressure is something that is a HighWaterPressure or that is a LowWaterPressure or that is a MediumWaterPressure .
Everything that is a HighWaterPressure or that is a LowWaterPressure or that is a MediumWaterPressure is a WaterPressure .
HighWaterPressure isPartOfValuePartition WaterPressure .
No HighWaterPressure is a LowWaterPressure .
No HighWaterPressure is a MediumWaterPressure .
WaterPressure hasPatternPart HighWaterPressure .

Hill

Every CatchDrain is something that locatedNear a Canal or that locatedNear a Hill .
Every DewPond locatedOn a Hill .
No Cliff is a Hill .
No Cover is a Hill .
No FishMigration is a Hill .
No FloodPrevention is a Hill .
No GroundSurface is a Hill .
No Hill is a Animal .
No Hill is a Boulder .
No Hill is a Cave .
No Hill is a Connection .
No Hill is a ContainmentOfSalmon .
No Hill is a ContainmentOfWater .
No Hill is a Dyke.Rock .
No Hill is a Embankment .
No Hill is a Escarpment .
No Hill is a Flood .
No Hill is a Footprint .
No Hill is a IndustrialArea .
No Hill is a Industry .
No Hill is a Land .
No Hill is a LeisureActivity .
No Hill is a Mill .
No Hill is a Modifier .
No Hill is a Mountain .
No Hill is a PastureLand .
No Hill is a Path .
No Hill is a PoliticalGeographicArea .
No Hill is a Process .
No Hill is a RiverCrossing .
No Hill is a Road .
No Hill is a RockStep .
No Hill is a Valley .
No HydrologyConcepts is a Hill .
No InlandNavigation is a Hill .
No Property is a Hill .
No Slope is a Hill .
No StreamCrossing is a Hill .
No Substance is a Hill .
No TemporalConcept is a Hill .
No Track is a Hill .

Hole

Every Sink is a Hole that locatedWhere a Stream that flowsInto a GroundSurface .
No Hole is a Connection .
No Hole is a Footprint .
No Hole is a PoliticalGeographicArea .
No Property is a Hole .

Hollow

Every Basin is a Hollow that directlyLocatedIn a GroundSurface .
No Connection is a Hollow .
No Footprint is a Hollow .
No Hollow is a PoliticalGeographicArea .
No Property is a Hollow .

Hydrology

The ontology modules (Spatial relations, Network relations, Language relations, Political geography and Mereology) include only those relationships and concepts that were directly relevant to the Hydrology ontology .

HydrologyConcepts

Every AreaOfLand is a HydrologyConcepts .
Every Bank is a HydrologyConcepts .
Every Basin is a HydrologyConcepts .
Every Bed is a HydrologyConcepts .
Every BodyOfWater is a HydrologyConcepts .
Every Canal is a HydrologyConcepts .
Every CanalStretch is a HydrologyConcepts .
Every Channel is a HydrologyConcepts .
Every CoveredReservoir is a HydrologyConcepts .
Every DisusedCanalStretch is a HydrologyConcepts .
Every DryCanalStretch is a HydrologyConcepts .
Every DryDisusedCanalStretch is a HydrologyConcepts .
Every Flume is a HydrologyConcepts .
Every Ford is a HydrologyConcepts .
Every HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream is a Source .
Every Pipe is a HydrologyConcepts .
Every Sink is a HydrologyConcepts .
Every Source is a HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream .
Every Structure is a HydrologyConcepts .
Every Tributary is a HydrologyConcepts .
Every Waterway is a HydrologyConcepts .
No HydrologyConcepts is a Animal .
No HydrologyConcepts is a Boulder .
No HydrologyConcepts is a Cave .
No HydrologyConcepts is a Cliff .
No HydrologyConcepts is a Connection .
No HydrologyConcepts is a ContainmentOfSalmon .
No HydrologyConcepts is a ContainmentOfWater .
No HydrologyConcepts is a Cover .
No HydrologyConcepts is a Dyke.Rock .
No HydrologyConcepts is a Embankment .
No HydrologyConcepts is a Escarpment .
No HydrologyConcepts is a FishMigration .
No HydrologyConcepts is a Flood .
No HydrologyConcepts is a FloodPrevention .
No HydrologyConcepts is a Footprint .
No HydrologyConcepts is a GroundSurface .
No HydrologyConcepts is a Hill .
No HydrologyConcepts is a IndustrialArea .
No HydrologyConcepts is a Industry .
No HydrologyConcepts is a Land .
No HydrologyConcepts is a LeisureActivity .
No HydrologyConcepts is a Mill .
No HydrologyConcepts is a Modifier .
No HydrologyConcepts is a Mountain .
No HydrologyConcepts is a PastureLand .
No HydrologyConcepts is a Path .
No HydrologyConcepts is a PoliticalGeographicArea .
No HydrologyConcepts is a Process .
No HydrologyConcepts is a Property .
No HydrologyConcepts is a RiverCrossing .
No HydrologyConcepts is a Road .
No HydrologyConcepts is a RockStep .
No HydrologyConcepts is a Slope .
No HydrologyConcepts is a StreamCrossing .
No HydrologyConcepts is a Substance .
No HydrologyConcepts is a TemporalConcept .
No HydrologyConcepts is a Valley .
No InlandNavigation is a HydrologyConcepts .
No Track is a HydrologyConcepts .

IndustrialArea

Every CoolingPond directlyLocatedIn a IndustrialArea .
No Cave is a IndustrialArea .
No Cliff is a IndustrialArea .
No Connection is a IndustrialArea .
No ContainmentOfSalmon is a IndustrialArea .
No ContainmentOfWater is a IndustrialArea .
No Cover is a IndustrialArea .
No Dyke.Rock is a IndustrialArea .
No Embankment is a IndustrialArea .
No FishMigration is a IndustrialArea .
No FloodPrevention is a IndustrialArea .
No Footprint is a IndustrialArea .
No GroundSurface is a IndustrialArea .
No Hill is a IndustrialArea .
No HydrologyConcepts is a IndustrialArea .
No IndustrialArea is a Animal .
No IndustrialArea is a Boulder .
No IndustrialArea is a Escarpment .
No IndustrialArea is a Flood .
No IndustrialArea is a Industry .
No IndustrialArea is a LeisureActivity .
No IndustrialArea is a Mill .
No IndustrialArea is a Modifier .
No IndustrialArea is a Path .
No IndustrialArea is a PoliticalGeographicArea .
No IndustrialArea is a Process .
No IndustrialArea is a RiverCrossing .
No IndustrialArea is a Road .
No IndustrialArea is a RockStep .
No IndustrialArea is a Valley .
No InlandNavigation is a IndustrialArea .
No Land is a IndustrialArea .
No Mountain is a IndustrialArea .
No PastureLand is a IndustrialArea .
No Property is a IndustrialArea .
No Slope is a IndustrialArea .
No StreamCrossing is a IndustrialArea .
No Substance is a IndustrialArea .
No TemporalConcept is a IndustrialArea .
No Track is a IndustrialArea .

IndustrialWater

Every CoolingPond hasInflow a IndustrialWater .
Every IndustrialWater is a Water .

Industry

Every Flume hasPrimaryPurpose a TransportOfWater that usedBy a Industry or that usedFor a Irrigation .
Every Leat.Channel hasPrimaryPurpose a TransportOfWater that usedBy a Industry .
No Cave is a Industry .
No Cliff is a Industry .
No Connection is a Industry .
No ContainmentOfSalmon is a Industry .
No ContainmentOfWater is a Industry .
No Cover is a Industry .
No Dyke.Rock is a Industry .
No Embankment is a Industry .
No FishMigration is a Industry .
No FloodPrevention is a Industry .
No Footprint is a Industry .
No GroundSurface is a Industry .
No Hill is a Industry .
No HydrologyConcepts is a Industry .
No IndustrialArea is a Industry .
No Industry is a Animal .
No Industry is a Boulder .
No Industry is a Escarpment .
No Industry is a Flood .
No Industry is a LeisureActivity .
No Industry is a Mill .
No Industry is a Process .
No Industry is a RiverCrossing .
No Industry is a RockStep .
No Industry is a Valley .
No InlandNavigation is a Industry .
No Land is a Industry .
No Modifier is a Industry .
No Mountain is a Industry .
No PastureLand is a Industry .
No Path is a Industry .
No PoliticalGeographicArea is a Industry .
No Property is a Industry .
No Road is a Industry .
No Slope is a Industry .
No StreamCrossing is a Industry .
No Substance is a Industry .
No TemporalConcept is a Industry .
No Track is a Industry .

InfluentStream

Every InfluentStream flowsOver something that is a Chalk or that is a Limestone .
Every InfluentStream is a Stream .
InfluentStream hasSynonym " Influent Stream " .
No Beck is a InfluentStream .
No Bourne is a InfluentStream .
No Brook is a InfluentStream .
No InfluentStream is a Burn .
No InfluentStream is a MillStream .
No Lode is a InfluentStream .
No Nant is a InfluentStream .
No Rivulet is a InfluentStream .
No Syke is a InfluentStream .

InlandNavigation

Every BodyOfWater that containedIn a Canal.Channel and that hasPrimaryPurpose a InlandNavigation is a Canal.Water .
Every BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation is a DisusedCanal.Water .
Every Canal.Water is a BodyOfWater that containedIn a Canal.Channel and that hasPrimaryPurpose a InlandNavigation .
Every DisusedCanal.Water is a BodyOfWater that containedIn a Canal.Channel and that isDirectComponentOf a DisusedCanalStretch and that does not enables a InlandNavigation .
Every Lake enables a InlandNavigation .
Every RiverStretch enables a InlandNavigation .
Every Waterway is something that hasPrimaryPurpose a InlandNavigation , and that is a Canal.Water or that is a River .
Everything that hasPrimaryPurpose a InlandNavigation , and that is a Canal.Water or that is a River is a Waterway .
No InlandNavigation is a Animal .
No InlandNavigation is a Boulder .
No InlandNavigation is a Cave .
No InlandNavigation is a Cliff .
No InlandNavigation is a Connection .
No InlandNavigation is a ContainmentOfSalmon .
No InlandNavigation is a ContainmentOfWater .
No InlandNavigation is a Cover .
No InlandNavigation is a Dyke.Rock .
No InlandNavigation is a Embankment .
No InlandNavigation is a Escarpment .
No InlandNavigation is a FishMigration .
No InlandNavigation is a Flood .
No InlandNavigation is a FloodPrevention .
No InlandNavigation is a Footprint .
No InlandNavigation is a GroundSurface .
No InlandNavigation is a Hill .
No InlandNavigation is a HydrologyConcepts .
No InlandNavigation is a IndustrialArea .
No InlandNavigation is a Industry .
No InlandNavigation is a Land .
No InlandNavigation is a LeisureActivity .
No InlandNavigation is a Mill .
No InlandNavigation is a Modifier .
No InlandNavigation is a Mountain .
No InlandNavigation is a PastureLand .
No InlandNavigation is a Path .
No InlandNavigation is a PoliticalGeographicArea .
No InlandNavigation is a Process .
No InlandNavigation is a Property .
No InlandNavigation is a RiverCrossing .
No InlandNavigation is a Road .
No InlandNavigation is a RockStep .
No InlandNavigation is a Slope .
No InlandNavigation is a StreamCrossing .
No InlandNavigation is a Substance .
No InlandNavigation is a TemporalConcept .
No InlandNavigation is a Track .
No InlandNavigation is a Valley .
No Rapids enables a InlandNavigation .
No Waterfall enables a InlandNavigation .

Inlet

Every Inlet directlyLocatedIn something that is a Estuary or that is a Lake or that is a River or that is a Sea .
Every Inlet hasFootprint a Footprint .
Every Inlet indentsInto a Land .
Every Inlet is a BodyOfWater .
Inlet hasSynonym " Creek " .
No Inlet is a Bay .
No Inlet is a Confluence .
No Inlet is a Estuary .
No Inlet is a Lake .
No Inlet is a Leat .
No Inlet is a Pool .
No Inlet is a Pool.InRiver .
No Inlet is a Rapids .
No Inlet is a River .
No Inlet is a Sea .
No Inlet is a Stream .
No Inlet is a Whirlpool .
No Pond is a Inlet .
No Reservoir is a Inlet .
No RiverMouth is a Inlet .
No RiverStretch is a Inlet .
No Spring is a Inlet .

Intermittent

Every Intermittent is a Frequency .
Every IntermittentSpring is a Spring that participatesIn a WaterFlowProcess that hasFrequency a Intermittent .
Every Spring that participatesIn a WaterFlowProcess that hasFrequency a Intermittent is a IntermittentSpring .

IntermittentSpring

Every IntermittentSpring is a Spring that participatesIn a WaterFlowProcess that hasFrequency a Intermittent .
Every Spring that participatesIn a WaterFlowProcess that hasFrequency a Intermittent is a IntermittentSpring .
IntermittentSpring hasSynonym " Intermittent Spring " .

Irrigation

Every Flume hasPrimaryPurpose a TransportOfWater that usedBy a Industry or that usedFor a Irrigation .
Every Irrigation is a WaterSupply .
Every IrrigationCanal hasPrimaryPurpose a Irrigation .
Every IrrigationDitch hasPrimaryPurpose a Irrigation .
No WaterSupplyToCanal is a Irrigation .

IrrigationCanal

Every IrrigationCanal hasPrimaryPurpose a Irrigation .
Every IrrigationCanal is a Canal .
IrrigationCanal hasSynonym " Irrigation Canal " .
No IrrigationCanal is a NavigationalCut .

IrrigationDitch

Every IrrigationDitch hasPrimaryPurpose a Irrigation .
Every IrrigationDitch is a Ditch .
IrrigationDitch hasSynonym " Irrigation Ditch " .
No Dyke is a IrrigationDitch .
No IrrigationDitch is a Drain .

Lake

Every Bay directlyLocatedIn something that is a Lake or that is a Sea .
Every Bay isPartOf something that is a Lake or that is a Sea .
Every Broad is a Lake .
Every Canal connectedTo nothing but something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Canal connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Inlet directlyLocatedIn something that is a Estuary or that is a Lake or that is a River or that is a Sea .
Every Lake containedIn a Basin .
Every Lake directlyConnectedTo nothing but something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every Lake directlyConnectedTo something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every Lake enables a InlandNavigation .
Every Lake hasCurrent a Current .
Every Lake is a BodyOfWater .
Every Lake is something that enables a Boating and that enables a Fishing .
Every Llyn hasRegionalSynonym a Lake that hasDirectGeographicLocation Wales .
Every Llyn is a Lake .
Every Loch hasRegionalSynonym a Lake that hasDirectGeographicLocation Scotland .
Every Loch is a Lake .
Every OverflowChannel adjacentTo a Lake .
Every River connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Stream .
Every River flowsInto nothing but something that is a Lake or that is a Reservoir or that is a River or that is a Sea .
Every River flowsInto something that is a Lake or that is a Reservoir or that is a River or that is a Sea .
Every RiverMouth providesConnection a Connection that connectionFrom exactly 1 River and that connectionTo something that is a Lake or that is a River or that is a Sea .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
Every Tarn is a Lake .
Every Wetland directlyConnectedTo nothing but something that is a Canal.Water or that is a Lake or that is a Pond or that is a Pool or that is a River or that is a Stream or that is a Wetland .
Lake hasSynonym " Flash " .
Lake hasSynonym " Mere " .
Lake hasWelshTranslation " Llyn " .
No Bay is a Lake .
No Estuary is a Lake .
No Inlet is a Lake .
No Lake is a Confluence .
No Lake is a Pool .
No Lake is a Pool.InRiver .
No Lake is a Rapids .
No Lake is a Stream .
No Leat is a Lake .
No Pond is a Lake .
No Reservoir is a Lake .
No River is a Lake .
No River is something that flowsInto a Lake and that flowsInto a Reservoir and that flowsInto a River and that flowsInto a Sea .
No RiverMouth is a Lake .
No RiverStretch is a Lake .
No Sea is a Lake .
No Spring is a Lake .
No Whirlpool is a Lake .

Land

Every AreaOfLand isSubdivisionOf a Land .
Every Bay indentsInto a Land .
Every Inlet indentsInto a Land .
No Cave is a Land .
No Cliff is a Land .
No Connection is a Land .
No ContainmentOfSalmon is a Land .
No Cover is a Land .
No Dyke.Rock is a Land .
No Embankment is a Land .
No FishMigration is a Land .
No FloodPrevention is a Land .
No GroundSurface is a Land .
No Hill is a Land .
No HydrologyConcepts is a Land .
No InlandNavigation is a Land .
No Land is a Animal .
No Land is a Boulder .
No Land is a ContainmentOfWater .
No Land is a Escarpment .
No Land is a Flood .
No Land is a Footprint .
No Land is a IndustrialArea .
No Land is a Industry .
No Land is a LeisureActivity .
No Land is a Mill .
No Land is a Modifier .
No Land is a PastureLand .
No Land is a Path .
No Land is a PoliticalGeographicArea .
No Land is a Process .
No Land is a RiverCrossing .
No Land is a Road .
No Land is a RockStep .
No Land is a Valley .
No Mountain is a Land .
No Property is a Land .
No Slope is a Land .
No StreamCrossing is a Land .
No Substance is a Land .
No TemporalConcept is a Land .
No Track is a Land .

Language

The ontology modules (Spatial relations, Network relations, Language relations, Political geography and Mereology) include only those relationships and concepts that were directly relevant to the Hydrology ontology .

LargeSize

Every LargeSize is a Size .
Every Size is something that is a LargeSize or that is a MediumSize or that is a SmallSize .
Everything that is a LargeSize or that is a MediumSize or that is a SmallSize is a Size .
LargeSize isPartOfValuePartition Size .
No LargeSize is a MediumSize .
No LargeSize is a SmallSize .
Size hasPatternPart LargeSize .

Leat

Every Channel that contains a Leat is a Leat.Channel .
Every Leat containedIn a Channel .
Every Leat is a BodyOfWater .
Every Leat.Channel is a Channel that contains a Leat .
No Inlet is a Leat .
No Leat is a Bay .
No Leat is a Confluence .
No Leat is a Estuary .
No Leat is a Lake .
No Leat is a Pool .
No Leat is a Pool.InRiver .
No Leat is a Rapids .
No Leat is a Sea .
No Leat is a Stream .
No Leat is a Whirlpool .
No Pond is a Leat .
No Reservoir is a Leat .
No River is a Leat .
No RiverMouth is a Leat .
No RiverStretch is a Leat .
No Spring is a Leat .

Leat.Channel

Every Channel that contains a Leat is a Leat.Channel .
Every Leat.Channel hasPrimaryPurpose a TransportOfWater that usedBy a Industry .
Every Leat.Channel is a Channel that contains a Leat .
Leat.Channel hasSynonym " Leat " .

LeisureActivity

Every Boating is a LeisureActivity .
Every CaptureOfGameBirds is a LeisureActivity .
Every Curling is a LeisureActivity .
Every Fishing is a LeisureActivity .
Every ModelBoating is a LeisureActivity .
No Boulder is a LeisureActivity .
No Cave is a LeisureActivity .
No Cliff is a LeisureActivity .
No Connection is a LeisureActivity .
No ContainmentOfSalmon is a LeisureActivity .
No ContainmentOfWater is a LeisureActivity .
No Cover is a LeisureActivity .
No Dyke.Rock is a LeisureActivity .
No Embankment is a LeisureActivity .
No FishMigration is a LeisureActivity .
No Flood is a LeisureActivity .
No FloodPrevention is a LeisureActivity .
No Footprint is a LeisureActivity .
No GroundSurface is a LeisureActivity .
No Hill is a LeisureActivity .
No HydrologyConcepts is a LeisureActivity .
No IndustrialArea is a LeisureActivity .
No Industry is a LeisureActivity .
No InlandNavigation is a LeisureActivity .
No Land is a LeisureActivity .
No LeisureActivity is a Animal .
No LeisureActivity is a Escarpment .
No Mill is a LeisureActivity .
No Modifier is a LeisureActivity .
No Mountain is a LeisureActivity .
No PastureLand is a LeisureActivity .
No Path is a LeisureActivity .
No PoliticalGeographicArea is a LeisureActivity .
No Process is a LeisureActivity .
No Property is a LeisureActivity .
No RiverCrossing is a LeisureActivity .
No Road is a LeisureActivity .
No RockStep is a LeisureActivity .
No Slope is a LeisureActivity .
No StreamCrossing is a LeisureActivity .
No Substance is a LeisureActivity .
No TemporalConcept is a LeisureActivity .
No Track is a LeisureActivity .
No Valley is a LeisureActivity .

Limestone

Every InfluentStream flowsOver something that is a Chalk or that is a Limestone .
Every Limestone is a Substance .
No Chalk is a Limestone .
No MineralSalts is a Limestone .
No Peat is a Limestone .
No Water is a Limestone .

Linn

Every Linn hasRegionalSynonym a Waterfall that hasDirectGeographicLocation Scotland .
Every Linn is a Waterfall .

Livestock

Every DewPond hasPrimaryPurpose a WaterSupply that supplyTo a Livestock .
Every Livestock is a Animal .
No Livestock is a Bird .

Llyn

Every Llyn hasRegionalSynonym a Lake that hasDirectGeographicLocation Wales .
Every Llyn is a Lake .

Loch

Every Loch hasDirectGeographicLocation Scotland .
Every Loch hasRegionalSynonym a Lake that hasDirectGeographicLocation Scotland .
Every Loch is a Lake .
Every Lochan is a Loch .

Lochan

Every Lochan hasSize a SmallSize .
Every Lochan is a Loch .
Lochan hasSynonym " Lake " .

Lock

Every Lock directlyConnectedTo at most 2 things .
Every Lock hasPrimaryPurpose a ControlOfWaterLevel .
Every Lock is a CanalStretch .

LockGate

Every LockGate hasPrimaryPurpose a ControlOfWaterFlow .
Every LockGate is a Structure .
Every LockGate isDirectComponentOf a Canal .
LockGate hasSynonym " Lock Gate " .
No Castle is a LockGate .
No LockGate is a Dam .
No LockGate is a Fort .
No LockGate is a SalmonLadder .
No LockGate is a SluiceGate .
No LockGate is a Weir .

Lode

Every Lode is a Stream .
Every Lode locatedOn a Embankment .
No Brook is a Lode .
No Lode is a Beck .
No Lode is a Bourne .
No Lode is a Burn .
No Lode is a InfluentStream .
No Lode is a MillStream .
No Lode is a Syke .
No Nant is a Lode .
No Rivulet is a Lode .

LowWaterPressure

Every LowWaterPressure is a WaterPressure .
Every WaterPressure is something that is a HighWaterPressure or that is a LowWaterPressure or that is a MediumWaterPressure .
Everything that is a HighWaterPressure or that is a LowWaterPressure or that is a MediumWaterPressure is a WaterPressure .
LowWaterPressure isPartOfValuePartition WaterPressure .
No HighWaterPressure is a LowWaterPressure .
No LowWaterPressure is a MediumWaterPressure .
WaterPressure hasPatternPart LowWaterPressure .

Map

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

Marsh

Every Marsh is a Wetland .
Every Marsh temporarilyFloodedBy a Water .
No Fen is a Marsh .
No Marsh contains a Peat .
No Marsh is a Bog .
No Marsh is a Swamp .

Master

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

Meadow

Every Meadow is a Field .
Every Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water is a WaterMeadow .
Every WaterMeadow is a Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water .
No Meadow is a AgriculturalField .

MediumSize

Every MediumSize is a Size .
Every Size is something that is a LargeSize or that is a MediumSize or that is a SmallSize .
Everything that is a LargeSize or that is a MediumSize or that is a SmallSize is a Size .
MediumSize isPartOfValuePartition Size .
No LargeSize is a MediumSize .
No MediumSize is a SmallSize .
Size hasPatternPart MediumSize .

MediumWaterPressure

Every MediumWaterPressure is a WaterPressure .
Every WaterPressure is something that is a HighWaterPressure or that is a LowWaterPressure or that is a MediumWaterPressure .
Everything that is a HighWaterPressure or that is a LowWaterPressure or that is a MediumWaterPressure is a WaterPressure .
MediumWaterPressure isPartOfValuePartition WaterPressure .
No HighWaterPressure is a MediumWaterPressure .
No LowWaterPressure is a MediumWaterPressure .
WaterPressure hasPatternPart MediumWaterPressure .

Mereology)

The ontology modules (Spatial relations, Network relations, Language relations, Political geography and Mereology) include only those relationships and concepts that were directly relevant to the Hydrology ontology .

Mill

Every MillPond locatedNear a Mill .
Every MillStream flowsPast a Mill .
No Boulder is a Mill .
No Cave is a Mill .
No Cliff is a Mill .
No Connection is a Mill .
No ContainmentOfSalmon is a Mill .
No ContainmentOfWater is a Mill .
No Cover is a Mill .
No Dyke.Rock is a Mill .
No Embankment is a Mill .
No FishMigration is a Mill .
No Flood is a Mill .
No FloodPrevention is a Mill .
No Footprint is a Mill .
No GroundSurface is a Mill .
No Hill is a Mill .
No HydrologyConcepts is a Mill .
No IndustrialArea is a Mill .
No Industry is a Mill .
No InlandNavigation is a Mill .
No Land is a Mill .
No Mill is a Animal .
No Mill is a Escarpment .
No Mill is a LeisureActivity .
No Mill is a Valley .
No Modifier is a Mill .
No Mountain is a Mill .
No PastureLand is a Mill .
No Path is a Mill .
No PoliticalGeographicArea is a Mill .
No Process is a Mill .
No Property is a Mill .
No RiverCrossing is a Mill .
No Road is a Mill .
No RockStep is a Mill .
No Slope is a Mill .
No StreamCrossing is a Mill .
No Substance is a Mill .
No TemporalConcept is a Mill .
No Track is a Mill .

MillLade

Every MillLade hasRegionalSynonym a MillRace that hasDirectGeographicLocation Scotland .
Every MillLade is a MillRace .
MillLade hasSynonym " Mill Lade " .

MillPond

Every MillPond directlyConnectedTo a MillStream .
Every MillPond hasPrimaryPurpose a WaterSupply .
Every MillPond is a Pond .
Every MillPond locatedNear a Mill .
Every MillStream flowsFrom a MillPond .
MillPond hasSynonym " Mill Pond " .

MillRace

Every MillLade hasRegionalSynonym a MillRace that hasDirectGeographicLocation Scotland .
Every MillLade is a MillRace .
Every MillRace contains a MillStream .
Every MillRace contains nothing but a MillStream .
Every MillRace is a Channel .
Every MillStream flowsIn a MillRace .
Every MillStream flowsIn nothing but a MillRace .
MillRace hasSynonym " Mill Race " .
No Conduit.Channel is a MillRace .
No Ditch is a MillRace .
No Gully is a MillRace .
No Moat is a MillRace .
No OverflowChannel is a MillRace .

MillStream

Every MillPond directlyConnectedTo a MillStream .
Every MillRace contains a MillStream .
Every MillRace contains nothing but a MillStream .
Every MillStream flowsFrom a MillPond .
Every MillStream flowsIn a MillRace .
Every MillStream flowsIn nothing but a MillRace .
Every MillStream flowsPast a Mill .
Every MillStream is a Stream .
MillStream hasSynonym " Mill Stream " .
No Beck is a MillStream .
No Bourne is a MillStream .
No Brook is a MillStream .
No Burn is a MillStream .
No InfluentStream is a MillStream .
No Lode is a MillStream .
No Nant is a MillStream .
No Rivulet is a MillStream .
No Syke is a MillStream .

MineralSalts

Every MineralSalts is a Substance .
Every Spa contains a MineralSalts .
No MineralSalts is a Chalk .
No MineralSalts is a Limestone .
No MineralSalts is a Peat .
No MineralSalts is a Water .

Moat

Every Moat is a Channel .
Every Moat surrounds nothing but something that is a Castle or that is a Fort .
Every Moat surrounds something that is a Castle or that is a Fort .
No Moat is a Conduit.Channel .
No Moat is a Ditch .
No Moat is a Gully .
No Moat is a MillRace .
No Moat is something that surrounds a Castle and that surrounds a Fort .
No OverflowChannel is a Moat .

ModelBoatLake

Every ModelBoatLake hasPrimaryPurpose a ModelBoating .
Every ModelBoatLake is a Pond .
ModelBoatLake hasSynonym " Model Boat Lake " .

ModelBoating

Every ModelBoatLake hasPrimaryPurpose a ModelBoating .
Every ModelBoating is a LeisureActivity .
No CaptureOfGameBirds is a ModelBoating .
No ModelBoating is a Boating .
No ModelBoating is a Curling .
No ModelBoating is a Fishing .

Modifier

Every Direction is a Modifier .
Every Shape is a Modifier .
Every Size is a Modifier .
Every WaterPressure is a Modifier .
No Cave is a Modifier .
No Cliff is a Modifier .
No Connection is a Modifier .
No ContainmentOfSalmon is a Modifier .
No ContainmentOfWater is a Modifier .
No Cover is a Modifier .
No Dyke.Rock is a Modifier .
No Embankment is a Modifier .
No FishMigration is a Modifier .
No FloodPrevention is a Modifier .
No Footprint is a Modifier .
No GroundSurface is a Modifier .
No Hill is a Modifier .
No HydrologyConcepts is a Modifier .
No IndustrialArea is a Modifier .
No InlandNavigation is a Modifier .
No Land is a Modifier .
No Modifier is a Animal .
No Modifier is a Boulder .
No Modifier is a Escarpment .
No Modifier is a Flood .
No Modifier is a Industry .
No Modifier is a LeisureActivity .
No Modifier is a Mill .
No Modifier is a Path .
No Modifier is a PoliticalGeographicArea .
No Modifier is a Process .
No Modifier is a RiverCrossing .
No Modifier is a Road .
No Modifier is a RockStep .
No Modifier is a Valley .
No Mountain is a Modifier .
No PastureLand is a Modifier .
No Property is a Modifier .
No Slope is a Modifier .
No StreamCrossing is a Modifier .
No Substance is a Modifier .
No TemporalConcept is a Modifier .
No Track is a Modifier .

Mountain

Every Tarn locatedOn a Mountain .
No Cliff is a Mountain .
No ContainmentOfSalmon is a Mountain .
No Cover is a Mountain .
No FishMigration is a Mountain .
No FloodPrevention is a Mountain .
No GroundSurface is a Mountain .
No Hill is a Mountain .
No HydrologyConcepts is a Mountain .
No InlandNavigation is a Mountain .
No Mountain is a Animal .
No Mountain is a Boulder .
No Mountain is a Cave .
No Mountain is a Connection .
No Mountain is a ContainmentOfWater .
No Mountain is a Dyke.Rock .
No Mountain is a Embankment .
No Mountain is a Escarpment .
No Mountain is a Flood .
No Mountain is a Footprint .
No Mountain is a IndustrialArea .
No Mountain is a Industry .
No Mountain is a Land .
No Mountain is a LeisureActivity .
No Mountain is a Mill .
No Mountain is a Modifier .
No Mountain is a PastureLand .
No Mountain is a Path .
No Mountain is a PoliticalGeographicArea .
No Mountain is a Process .
No Mountain is a RiverCrossing .
No Mountain is a Road .
No Mountain is a RockStep .
No Mountain is a Valley .
No Property is a Mountain .
No Slope is a Mountain .
No StreamCrossing is a Mountain .
No Substance is a Mountain .
No TemporalConcept is a Mountain .
No Track is a Mountain .

Nant

Every Nant hasRegionalSynonym a Stream that hasDirectGeographicLocation Wales .
Every Nant is a Stream .
No Brook is a Nant .
No Nant is a Beck .
No Nant is a Bourne .
No Nant is a Burn .
No Nant is a InfluentStream .
No Nant is a Lode .
No Nant is a MillStream .
No Nant is a Syke .
No Rivulet is a Nant .

NavigationalCut

Every NavigationalCut hasDirectComponent exactly 1 CanalStretch .
Every NavigationalCut is a Canal .
NavigationalCut hasSynonym " Navigational Cut " .
No IrrigationCanal is a NavigationalCut .

Network

The ontology modules (Spatial relations, Network relations, Language relations, Political geography and Mereology) include only those relationships and concepts that were directly relevant to the Hydrology ontology .

Northern_England

Every Beck hasRegionalSynonym a Stream that hasDirectGeographicLocation Northern_England .
Every Burn hasRegionalSynonym a Stream that hasDirectGeographicLocation Northern_England or that hasDirectGeographicLocation Scotland or that hasDirectGeographicLocation nothing but something that is Northern_England or that is Scotland .
Every Force hasRegionalSynonym a Waterfall that hasDirectGeographicLocation Northern_England .
Every Tarn hasDirectGeographicLocation Northern_England .

November

[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

Objects

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

Ordnance

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
Purpose: To describe in an unambiguous manner the inland hydrology feature classes surveyed by Ordnance Survey with the intention of improving the use of the surveyed data by our customers and enabling semi-automatic processing of these data .
[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

OverflowChannel

Every OverflowChannel adjacentTo a Lake .
Every OverflowChannel enables a Drainage .
Every OverflowChannel is a Channel .
No OverflowChannel is a Conduit.Channel .
No OverflowChannel is a Ditch .
No OverflowChannel is a Gully .
No OverflowChannel is a MillRace .
No OverflowChannel is a Moat .
OverflowChannel hasSynonym " Overflow Channel " .

OxbowLake

Every OxbowLake is a Pond .
Every OxbowLake locatedNear a Floodplain .
Every OxbowLake locatedNear a River .
OxbowLake hasSynonym " Oxbow Lake " .

PastureLand

Every DewPond directlyLocatedIn a PastureLand .
Every WaterMeadow enables a PastureLand that occursDuring a Spring.Season .
No Cave is a PastureLand .
No Cliff is a PastureLand .
No Connection is a PastureLand .
No ContainmentOfSalmon is a PastureLand .
No Cover is a PastureLand .
No Dyke.Rock is a PastureLand .
No Embankment is a PastureLand .
No FishMigration is a PastureLand .
No FloodPrevention is a PastureLand .
No GroundSurface is a PastureLand .
No Hill is a PastureLand .
No HydrologyConcepts is a PastureLand .
No InlandNavigation is a PastureLand .
No Land is a PastureLand .
No Mountain is a PastureLand .
No PastureLand is a Animal .
No PastureLand is a Boulder .
No PastureLand is a ContainmentOfWater .
No PastureLand is a Escarpment .
No PastureLand is a Flood .
No PastureLand is a Footprint .
No PastureLand is a IndustrialArea .
No PastureLand is a Industry .
No PastureLand is a LeisureActivity .
No PastureLand is a Mill .
No PastureLand is a Modifier .
No PastureLand is a Path .
No PastureLand is a PoliticalGeographicArea .
No PastureLand is a Process .
No PastureLand is a RiverCrossing .
No PastureLand is a Road .
No PastureLand is a RockStep .
No PastureLand is a Valley .
No Property is a PastureLand .
No Slope is a PastureLand .
No StreamCrossing is a PastureLand .
No Substance is a PastureLand .
No TemporalConcept is a PastureLand .
No Track is a PastureLand .

Path

Every Ford isComponentOf something that is a Path or that is a Road or that is a Track .
No Cave is a Path .
No Cliff is a Path .
No Connection is a Path .
No ContainmentOfSalmon is a Path .
No ContainmentOfWater is a Path .
No Cover is a Path .
No Dyke.Rock is a Path .
No Embankment is a Path .
No FishMigration is a Path .
No FloodPrevention is a Path .
No Footprint is a Path .
No GroundSurface is a Path .
No Hill is a Path .
No HydrologyConcepts is a Path .
No IndustrialArea is a Path .
No InlandNavigation is a Path .
No Land is a Path .
No Modifier is a Path .
No Mountain is a Path .
No PastureLand is a Path .
No Path is a Animal .
No Path is a Boulder .
No Path is a Escarpment .
No Path is a Flood .
No Path is a Industry .
No Path is a LeisureActivity .
No Path is a Mill .
No Path is a PoliticalGeographicArea .
No Path is a Process .
No Path is a RiverCrossing .
No Path is a Road .
No Path is a RockStep .
No Path is a Valley .
No Property is a Path .
No Slope is a Path .
No StreamCrossing is a Path .
No Substance is a Path .
No TemporalConcept is a Path .
No Track is a Path .

Peat

Every Bog contains a Peat .
Every Fen contains a Peat .
Every Peat is a Substance .
No Marsh contains a Peat .
No MineralSalts is a Peat .
No Peat is a Chalk .
No Peat is a Limestone .
No Peat is a Water .
No Swamp contains a Peat .

Permanent

" Scope: Permanent topographic features involved in the containment and transport of surface inland water of a size of 1 metre or greater including tidal water within rivers .

Pipe

Every Basin directlyConnectedTo nothing but something that is a Basin or that is a Channel or that is a Pipe .
Every Channel is something that connectedTo a Basin or that connectedTo a Channel or that connectedTo a Pipe or that connectedTo a Wetland .
Every Conduit.Pipe is a Pipe .
Every Culvert is a Pipe .
Every Flume is something that is a Channel or that is a Pipe .
Every Pipe directlyConnectedTo nothing but something that is a Basin or that is a Channel or that is a Pipe .
Every Pipe directlyConnectedTo something that is a Basin or that is a Channel or that is a Pipe .
Every Pipe enables a ContainmentOfWater .
Every Pipe enables a TransportOfWater .
Every Pipe hasFootprint a Footprint .
Every Pipe is a HydrologyConcepts .
No AreaOfLand is a Pipe .
No Basin is a Pipe .
No BodyOfWater is a Pipe .
No Canal is a Pipe .
No CanalStretch is a Pipe .
No DryCanalStretch is a Pipe .
No Ford is a Pipe .
No Pipe is a Bank .
No Pipe is a Bed .
No Pipe is a Channel .
No Pipe is a DisusedCanalStretch .
No Pipe is a DryDisusedCanalStretch .
No Pipe is a Sink .
No Structure is a Pipe .

PlungePool

Every PlungePool containedIn a Basin .
Every PlungePool is a Pool .
Every PlungePool locatedAt a Waterfall .
Every PlungePool locatedAt nothing but a Waterfall .
No Pot is a PlungePool .
PlungePool hasSynonym " Plunge Pool " .

Political

The ontology modules (Spatial relations, Network relations, Language relations, Political geography and Mereology) include only those relationships and concepts that were directly relevant to the Hydrology ontology .

PoliticalGeographicArea

No Cave is a PoliticalGeographicArea .
No Cliff is a PoliticalGeographicArea .
No Connection is a PoliticalGeographicArea .
No ContainmentOfSalmon is a PoliticalGeographicArea .
No ContainmentOfWater is a PoliticalGeographicArea .
No Cover is a PoliticalGeographicArea .
No Dyke.Rock is a PoliticalGeographicArea .
No Embankment is a PoliticalGeographicArea .
No FishMigration is a PoliticalGeographicArea .
No FloodPrevention is a PoliticalGeographicArea .
No Footprint is a PoliticalGeographicArea .
No GroundSurface is a PoliticalGeographicArea .
No Hill is a PoliticalGeographicArea .
No Hole is a PoliticalGeographicArea .
No Hollow is a PoliticalGeographicArea .
No HydrologyConcepts is a PoliticalGeographicArea .
No IndustrialArea is a PoliticalGeographicArea .
No InlandNavigation is a PoliticalGeographicArea .
No Land is a PoliticalGeographicArea .
No Modifier is a PoliticalGeographicArea .
No Mountain is a PoliticalGeographicArea .
No PastureLand is a PoliticalGeographicArea .
No Path is a PoliticalGeographicArea .
No PoliticalGeographicArea is a Animal .
No PoliticalGeographicArea is a Boulder .
No PoliticalGeographicArea is a Escarpment .
No PoliticalGeographicArea is a Flood .
No PoliticalGeographicArea is a Industry .
No PoliticalGeographicArea is a LeisureActivity .
No PoliticalGeographicArea is a Mill .
No PoliticalGeographicArea is a Process .
No PoliticalGeographicArea is a RiverCrossing .
No PoliticalGeographicArea is a RockStep .
No PoliticalGeographicArea is a Valley .
No Property is a PoliticalGeographicArea .
No Road is a PoliticalGeographicArea .
No Slope is a PoliticalGeographicArea .
No StreamCrossing is a PoliticalGeographicArea .
No Substance is a PoliticalGeographicArea .
No TemporalConcept is a PoliticalGeographicArea .
No Track is a PoliticalGeographicArea .

Pond

Every BalancingPond is a Pond .
Every BoatingLake is a Pond that hasPrimaryPurpose a Boating .
Every Canal connectedTo nothing but something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Canal connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every CoolingPond is a Pond .
Every CurlingPond is a Pond .
Every DecoyPond is a Pond .
Every DewPond is a Pond .
Every DuckPond is a Pond .
Every FishPond is a Pond .
Every MillPond is a Pond .
Every ModelBoatLake is a Pond .
Every OxbowLake is a Pond .
Every Pond containedIn a Basin .
Every Pond directlyConnectedTo nothing but something that is a Canal.Water or that is a River or that is a Stream .
Every Pond is a BodyOfWater .
Every Pond that hasPrimaryPurpose a Boating is a BoatingLake .
Every Pond that hasPrimaryPurpose a TimberStorage is a TimberPond .
Every River connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Stream .
Every SalmonCatch is a Pond .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
Every TimberPond is a Pond that hasPrimaryPurpose a TimberStorage .
Every Wetland directlyConnectedTo nothing but something that is a Canal.Water or that is a Lake or that is a Pond or that is a Pool or that is a River or that is a Stream or that is a Wetland .
No Pond hasCurrent a Current .
No Pond is a Bay .
No Pond is a Confluence .
No Pond is a Estuary .
No Pond is a Inlet .
No Pond is a Lake .
No Pond is a Leat .
No Pond is a Pool .
No Pond is a Pool.InRiver .
No Pond is a Rapids .
No Pond is a River .
No Pond is a RiverStretch .
No Pond is a Sea .
No Pond is a Spring .
No Pond is a Stream .
No Pond is a Whirlpool .
No Reservoir is a Pond .
No RiverMouth is a Pond .

Pool

Every Canal connectedTo nothing but something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Canal connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every PlungePool is a Pool .
Every Pool containedIn a Basin .
Every Pool directlyConnectedTo nothing but something that is a Canal.Water or that is a River or that is a Stream .
Every Pool is a BodyOfWater .
Every Pot is a Pool .
Every River connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Stream .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
Every Wetland directlyConnectedTo nothing but something that is a Canal.Water or that is a Lake or that is a Pond or that is a Pool or that is a River or that is a Stream or that is a Wetland .
No Bay is a Pool .
No Confluence is a Pool .
No Estuary is a Pool .
No Inlet is a Pool .
No Lake is a Pool .
No Leat is a Pool .
No Pond is a Pool .
No Pool hasCurrent a Current .
No Pool is a Rapids .
No Pool is a Stream .
No Pool.InRiver is a Pool .
No Reservoir is a Pool .
No River is a Pool .
No RiverMouth is a Pool .
No RiverStretch is a Pool .
No Sea is a Pool .
No Spring is a Pool .
No Whirlpool is a Pool .

Pool.InRiver

Every Backwater is a Pool.InRiver .
Every Dam.Water is a Pool.InRiver .
Every Dub is a Pool.InRiver .
Every Pool.InRiver containedIn a BodyOfWater .
Every Pool.InRiver is a BodyOfWater .
Every Pool.InRiver isDirectComponentOf something that is a River or that is a Stream .
No Bay is a Pool.InRiver .
No Confluence is a Pool.InRiver .
No Estuary is a Pool.InRiver .
No Inlet is a Pool.InRiver .
No Lake is a Pool.InRiver .
No Leat is a Pool.InRiver .
No Pond is a Pool.InRiver .
No Pool.InRiver hasCurrent a Current .
No Pool.InRiver is a Pool .
No Pool.InRiver is a Rapids .
No Pool.InRiver is a Stream .
No Reservoir is a Pool.InRiver .
No River is a Pool.InRiver .
No RiverMouth is a Pool.InRiver .
No RiverStretch is a Pool.InRiver .
No Sea is a Pool.InRiver .
No Spring is a Pool.InRiver .
No Whirlpool is a Pool.InRiver .
Pool.InRiver hasSynonym " Pool " .

Pot

Every Pot containedIn a Basin .
Every Pot is a Pool .
Every Pot locatedNear something that is a Rapids or that is a Waterfall .
No Pot is a PlungePool .

Process

Every ControlOfWaterFlow is a Process .
Every ControlOfWaterLevel is a Process .
Every Drainage is a Process .
Every TidalProcess is a Process .
Every TimberStorage is a Process .
Every TransportOfWater is a Process .
Every WaterFlowProcess is a Process .
Every WaterSupply is a Process .
No Boulder is a Process .
No Cave is a Process .
No Cliff is a Process .
No Connection is a Process .
No ContainmentOfSalmon is a Process .
No ContainmentOfWater is a Process .
No Cover is a Process .
No Dyke.Rock is a Process .
No Embankment is a Process .
No FishMigration is a Process .
No Flood is a Process .
No FloodPrevention is a Process .
No Footprint is a Process .
No GroundSurface is a Process .
No Hill is a Process .
No HydrologyConcepts is a Process .
No IndustrialArea is a Process .
No Industry is a Process .
No InlandNavigation is a Process .
No Land is a Process .
No Modifier is a Process .
No Mountain is a Process .
No PastureLand is a Process .
No Path is a Process .
No PoliticalGeographicArea is a Process .
No Process is a Animal .
No Process is a Escarpment .
No Process is a LeisureActivity .
No Process is a Mill .
No Process is a Valley .
No Property is a Process .
No RiverCrossing is a Process .
No Road is a Process .
No RockStep is a Process .
No Slope is a Process .
No StreamCrossing is a Process .
No Substance is a Process .
No TemporalConcept is a Process .
No Track is a Process .

Property

No Cover is a Property .
No FishMigration is a Property .
No FloodPrevention is a Property .
No HydrologyConcepts is a Property .
No InlandNavigation is a Property .
No Property is a Animal .
No Property is a Boulder .
No Property is a Cave .
No Property is a Cliff .
No Property is a Connection .
No Property is a ContainmentOfSalmon .
No Property is a ContainmentOfWater .
No Property is a Dyke.Rock .
No Property is a Embankment .
No Property is a Escarpment .
No Property is a Flood .
No Property is a Footprint .
No Property is a GroundSurface .
No Property is a Hill .
No Property is a Hole .
No Property is a Hollow .
No Property is a IndustrialArea .
No Property is a Industry .
No Property is a Land .
No Property is a LeisureActivity .
No Property is a Mill .
No Property is a Modifier .
No Property is a Mountain .
No Property is a PastureLand .
No Property is a Path .
No Property is a PoliticalGeographicArea .
No Property is a Process .
No Property is a RiverCrossing .
No Property is a Road .
No Property is a RockStep .
No Property is a StreamCrossing .
No Property is a Substance .
No Property is a Valley .
No Slope is a Property .
No TemporalConcept is a Property .
No Track is a Property .

Purpose:

Purpose: To describe in an unambiguous manner the inland hydrology feature classes surveyed by Ordnance Survey with the intention of improving the use of the surveyed data by our customers and enabling semi-automatic processing of these data .

RainWater

Every Bog that fedBy a RainWater is a TypicalBog .
Every RainWater is a Water .
Every TypicalBog is a Bog that fedBy a RainWater .

Rapids

Every Pot locatedNear something that is a Rapids or that is a Waterfall .
Every Rapids hasCurrent a TurbulentCurrent .
Every Rapids is a BodyOfWater .
Every Rapids isDirectComponentOf something that is a River or that is a Stream .
No Bay is a Rapids .
No Confluence is a Rapids .
No Estuary is a Rapids .
No Inlet is a Rapids .
No Lake is a Rapids .
No Leat is a Rapids .
No Pond is a Rapids .
No Pool is a Rapids .
No Pool.InRiver is a Rapids .
No Rapids enables a InlandNavigation .
No Rapids is a Stream .
No Reservoir is a Rapids .
No River is a Rapids .
No RiverMouth is a Rapids .
No RiverStretch is a Rapids .
No Sea is a Rapids .
No Spring is a Rapids .
No Whirlpool is a Rapids .

Real

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

Reservoir

Every Canal connectedTo nothing but something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Canal connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every CoveredReservoir is a Reservoir that hasDirectComponent a Cover .
Every Lake directlyConnectedTo nothing but something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every Lake directlyConnectedTo something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every Reservoir controlledBy nothing but something that is a Dam or that is a SluiceGate .
Every Reservoir controlledBy something that is a Dam or that is a SluiceGate .
Every Reservoir hasPrimaryPurpose a WaterSupply .
Every Reservoir is a BodyOfWater .
Every Reservoir that hasDirectComponent a Cover is a CoveredReservoir .
Every River connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Stream .
Every River flowsInto nothing but something that is a Lake or that is a Reservoir or that is a River or that is a Sea .
Every River flowsInto something that is a Lake or that is a Reservoir or that is a River or that is a Sea .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
No Reservoir is a Bay .
No Reservoir is a Confluence .
No Reservoir is a Estuary .
No Reservoir is a Inlet .
No Reservoir is a Lake .
No Reservoir is a Leat .
No Reservoir is a Pond .
No Reservoir is a Pool .
No Reservoir is a Pool.InRiver .
No Reservoir is a Rapids .
No Reservoir is a River .
No Reservoir is a RiverMouth .
No Reservoir is a RiverStretch .
No Reservoir is a Sea .
No Reservoir is a Spring .
No Reservoir is a Stream .
No Reservoir is a Whirlpool .
No River is something that flowsInto a Lake and that flowsInto a Reservoir and that flowsInto a River and that flowsInto a Sea .

Rhyne

Every Rhyne is a AgriculturalDrain .
Every Rhyne is something that hasRegionalSynonym a AgriculturalDrain and that hasDirectGeographicLocation Somerset .
Rhyne hasSynonym " Reen " .
Rhyne hasSynonym " Rhine " .

Rill

Every Rill is a Stream that flowsIn a Gully .
Every Stream that flowsIn a Gully is a Rill .

River

Every Afon hasRegionalSynonym a River that hasDirectGeographicLocation Wales .
Every Afon is a River .
Every Backwater isDirectComponentOf something that is a River or that is a Stream .
Every Bank that isEdgeOf a Channel that contains a River is a RiverBank .
Every Bed that isBottomOf a Channel that contains a River is a RiverBed .
Every BraidedRiver is a River that hasDirectComponent a BraidedRiverStretch .
Every Canal connectedTo nothing but something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Canal connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every CanalFeeder directlyConnectedTo something that is a River or that is a Stream .
Every Confluence isComponentOf something that is a Canal.Water or that is a River or that is a Stream .
Every Dam.Water directlyLocatedIn something that is a River or that is a Stream .
Every Estuary providesConnection a Connection that connectionFrom a River and that connectionTo exactly 1 Sea .
Every Floodplain adjacentTo a River .
Every Ford isComponentOf something that is a River or that is a Stream .
Every HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream is a Source .
Every Inlet directlyLocatedIn something that is a Estuary or that is a Lake or that is a River or that is a Sea .
Every Lake directlyConnectedTo nothing but something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every Lake directlyConnectedTo something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every OxbowLake locatedNear a River .
Every Pond directlyConnectedTo nothing but something that is a Canal.Water or that is a River or that is a Stream .
Every Pool directlyConnectedTo nothing but something that is a Canal.Water or that is a River or that is a Stream .
Every Pool.InRiver isDirectComponentOf something that is a River or that is a Stream .
Every Rapids isDirectComponentOf something that is a River or that is a Stream .
Every River connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Stream .
Every River flowsIn a Channel .
Every River flowsInto nothing but something that is a Lake or that is a Reservoir or that is a River or that is a Sea .
Every River flowsInto something that is a Lake or that is a Reservoir or that is a River or that is a Sea .
Every River hasCurrent a Current .
Every River hasDirectComponent a Source .
Every River is a BodyOfWater .
Every River that hasDirectComponent a BraidedRiverStretch is a BraidedRiver .
Every River that hasDirectComponent a TidalRiverStretch is a TidalRiver .
Every RiverBank is a Bank that isEdgeOf a Channel that contains a River .
Every RiverBed is a Bed that isBottomOf a Channel that contains a River .
Every RiverMouth isDirectComponentOf a River .
Every RiverMouth providesConnection a Connection that connectionFrom exactly 1 River and that connectionTo something that is a Lake or that is a River or that is a Sea .
Every RiverStretch isDirectComponentOf a River .
Every Source is a HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
Every TidalRiver is a River that hasDirectComponent a TidalRiverStretch .
Every TimberPond adjacentTo a River .
Every Waterway is something that hasPrimaryPurpose a InlandNavigation , and that is a Canal.Water or that is a River .
Every Wetland directlyConnectedTo nothing but something that is a Canal.Water or that is a Lake or that is a Pond or that is a Pool or that is a River or that is a Stream or that is a Wetland .
Every Whirlpool directlyLocatedIn something that is a River or that is a Stream .
Everything that hasPrimaryPurpose a InlandNavigation , and that is a Canal.Water or that is a River is a Waterway .
No Inlet is a River .
No Pond is a River .
No Reservoir is a River .
No River is a Bay .
No River is a Confluence .
No River is a Estuary .
No River is a Lake .
No River is a Leat .
No River is a Pool .
No River is a Pool.InRiver .
No River is a Rapids .
No River is a Sea .
No River is a Whirlpool .
No River is something that flowsInto a Lake and that flowsInto a Reservoir and that flowsInto a River and that flowsInto a Sea .
No RiverMouth is a River .
No RiverStretch is a River .
No Spring is a River .

RiverBank

Every Bank that isEdgeOf a Channel that contains a River is a RiverBank .
Every RiverBank is a Bank that isEdgeOf a Channel that contains a River .
RiverBank hasSynonym " Bank " .
RiverBank hasSynonym " River Bank " .

RiverBed

Every Bed that isBottomOf a Channel that contains a River is a RiverBed .
Every RiverBed is a Bed that isBottomOf a Channel that contains a River .
RiverBed hasSynonym " Bed " .
RiverBed hasSynonym " River Bed " .

RiverCrossing

Every Ford hasPrimaryPurpose something that is a RiverCrossing or that is a StreamCrossing .
No Cave is a RiverCrossing .
No Cliff is a RiverCrossing .
No Connection is a RiverCrossing .
No ContainmentOfSalmon is a RiverCrossing .
No ContainmentOfWater is a RiverCrossing .
No Cover is a RiverCrossing .
No Dyke.Rock is a RiverCrossing .
No Embankment is a RiverCrossing .
No FishMigration is a RiverCrossing .
No Flood is a RiverCrossing .
No FloodPrevention is a RiverCrossing .
No Footprint is a RiverCrossing .
No GroundSurface is a RiverCrossing .
No Hill is a RiverCrossing .
No HydrologyConcepts is a RiverCrossing .
No IndustrialArea is a RiverCrossing .
No Industry is a RiverCrossing .
No InlandNavigation is a RiverCrossing .
No Land is a RiverCrossing .
No Modifier is a RiverCrossing .
No Mountain is a RiverCrossing .
No PastureLand is a RiverCrossing .
No Path is a RiverCrossing .
No PoliticalGeographicArea is a RiverCrossing .
No Property is a RiverCrossing .
No RiverCrossing is a Animal .
No RiverCrossing is a Boulder .
No RiverCrossing is a Escarpment .
No RiverCrossing is a LeisureActivity .
No RiverCrossing is a Mill .
No RiverCrossing is a Process .
No RiverCrossing is a RockStep .
No RiverCrossing is a Valley .
No Road is a RiverCrossing .
No Slope is a RiverCrossing .
No StreamCrossing is a RiverCrossing .
No Substance is a RiverCrossing .
No TemporalConcept is a RiverCrossing .
No Track is a RiverCrossing .

RiverMouth

Every Aber hasRegionalSynonym something that hasDirectGeographicLocation Wales , and that is a Confluence or that is a RiverMouth .
Every Aber is something that is a Confluence or that is a RiverMouth .
Every RiverMouth is a BodyOfWater .
Every RiverMouth isDirectComponentOf a River .
Every RiverMouth providesConnection a Connection that connectionFrom exactly 1 River and that connectionTo something that is a Lake or that is a River or that is a Sea .
Everything that is a Confluence or that is a RiverMouth is a Aber .
No Reservoir is a RiverMouth .
No RiverMouth is a Bay .
No RiverMouth is a Confluence .
No RiverMouth is a Estuary .
No RiverMouth is a Inlet .
No RiverMouth is a Lake .
No RiverMouth is a Leat .
No RiverMouth is a Pond .
No RiverMouth is a Pool .
No RiverMouth is a Pool.InRiver .
No RiverMouth is a Rapids .
No RiverMouth is a River .
No RiverMouth is a RiverStretch .
No RiverMouth is a Sea .
No RiverMouth is a Spring .
No RiverMouth is a Stream .
No RiverMouth is a Whirlpool .
RiverMouth hasSynonym " Mouth " .
RiverMouth hasSynonym " River Mouth " .

RiverStretch

Every BraidedRiverStretch is a RiverStretch that flowsIn at least 2 Channel .
Every RiverStretch enables a InlandNavigation .
Every RiverStretch flowsIn a Channel .
Every RiverStretch is a BodyOfWater .
Every RiverStretch isDirectComponentOf a River .
Every RiverStretch that flowsIn at least 2 Channel is a BraidedRiverStretch .
Every TidalRiverStretch is a RiverStretch .
No Pond is a RiverStretch .
No Reservoir is a RiverStretch .
No RiverMouth is a RiverStretch .
No RiverStretch is a Bay .
No RiverStretch is a Confluence .
No RiverStretch is a Estuary .
No RiverStretch is a Inlet .
No RiverStretch is a Lake .
No RiverStretch is a Leat .
No RiverStretch is a Pool .
No RiverStretch is a Pool.InRiver .
No RiverStretch is a Rapids .
No RiverStretch is a River .
No RiverStretch is a Sea .
No RiverStretch is a Spring .
No RiverStretch is a Stream .
No RiverStretch is a Whirlpool .
RiverStretch hasSynonym " Reach " .
RiverStretch hasSynonym " River Stretch " .
RiverStretch hasSynonym " Stretch " .

Rivulet

Every Rivulet is a Stream .
No Brook is a Rivulet .
No Rivulet is a Beck .
No Rivulet is a Bourne .
No Rivulet is a Burn .
No Rivulet is a InfluentStream .
No Rivulet is a Lode .
No Rivulet is a MillStream .
No Rivulet is a Nant .
No Rivulet is a Syke .

Road

Every Culvert hasPrimaryPurpose a TransportOfWater that transportsUnder a Road .
Every Ford isComponentOf something that is a Path or that is a Road or that is a Track .
No Cave is a Road .
No Cliff is a Road .
No Connection is a Road .
No ContainmentOfSalmon is a Road .
No ContainmentOfWater is a Road .
No Cover is a Road .
No Dyke.Rock is a Road .
No Embankment is a Road .
No FishMigration is a Road .
No FloodPrevention is a Road .
No Footprint is a Road .
No GroundSurface is a Road .
No Hill is a Road .
No HydrologyConcepts is a Road .
No IndustrialArea is a Road .
No InlandNavigation is a Road .
No Land is a Road .
No Modifier is a Road .
No Mountain is a Road .
No PastureLand is a Road .
No Path is a Road .
No Property is a Road .
No Road is a Animal .
No Road is a Boulder .
No Road is a Escarpment .
No Road is a Flood .
No Road is a Industry .
No Road is a LeisureActivity .
No Road is a Mill .
No Road is a PoliticalGeographicArea .
No Road is a Process .
No Road is a RiverCrossing .
No Road is a RockStep .
No Road is a Valley .
No Slope is a Road .
No StreamCrossing is a Road .
No Substance is a Road .
No TemporalConcept is a Road .
No Track is a Road .

RockStep

Every Cascade flowsOver at least 2 things that are a Boulder or that are a RockStep .
Every Waterfall flowsOver a RockStep .
No Boulder is a RockStep .
No Cave is a RockStep .
No Cliff is a RockStep .
No Connection is a RockStep .
No ContainmentOfSalmon is a RockStep .
No ContainmentOfWater is a RockStep .
No Cover is a RockStep .
No Dyke.Rock is a RockStep .
No Embankment is a RockStep .
No FishMigration is a RockStep .
No Flood is a RockStep .
No FloodPrevention is a RockStep .
No Footprint is a RockStep .
No GroundSurface is a RockStep .
No Hill is a RockStep .
No HydrologyConcepts is a RockStep .
No IndustrialArea is a RockStep .
No Industry is a RockStep .
No InlandNavigation is a RockStep .
No Land is a RockStep .
No Modifier is a RockStep .
No Mountain is a RockStep .
No PastureLand is a RockStep .
No Path is a RockStep .
No PoliticalGeographicArea is a RockStep .
No Property is a RockStep .
No RiverCrossing is a RockStep .
No Road is a RockStep .
No RockStep is a Animal .
No RockStep is a Escarpment .
No RockStep is a LeisureActivity .
No RockStep is a Mill .
No RockStep is a Process .
No RockStep is a Valley .
No Slope is a RockStep .
No StreamCrossing is a RockStep .
No Substance is a RockStep .
No TemporalConcept is a RockStep .
No Track is a RockStep .

SalmonCatch

Every SalmonCatch hasPrimaryPurpose a ContainmentOfSalmon .
Every SalmonCatch is a Pond .
SalmonCatch hasSynonym " Salmon Catch " .

SalmonLadder

Every SalmonLadder contains a Water .
Every SalmonLadder hasPrimaryPurpose a FishMigration .
Every SalmonLadder is a Structure .
Every SalmonLadder locatedNear something that is a Dam or that is a Weir .
No Castle is a SalmonLadder .
No Fort is a SalmonLadder .
No LockGate is a SalmonLadder .
No SalmonLadder is a Dam .
No SalmonLadder is a Weir .
No SluiceGate is a SalmonLadder .
SalmonLadder hasSynonym " Salmon Ladder " .

Scope:

" Scope: Permanent topographic features involved in the containment and transport of surface inland water of a size of 1 metre or greater including tidal water within rivers .

Scotland

Every Burn hasRegionalSynonym a Stream that hasDirectGeographicLocation Northern_England or that hasDirectGeographicLocation Scotland or that hasDirectGeographicLocation nothing but something that is Northern_England or that is Scotland .
Every Linn hasRegionalSynonym a Waterfall that hasDirectGeographicLocation Scotland .
Every Loch hasDirectGeographicLocation Scotland .
Every Loch hasRegionalSynonym a Lake that hasDirectGeographicLocation Scotland .
Every MillLade hasRegionalSynonym a MillRace that hasDirectGeographicLocation Scotland .

Sea

Every Bay directlyLocatedIn something that is a Lake or that is a Sea .
Every Bay isPartOf something that is a Lake or that is a Sea .
Every Estuary isDirectComponentOf a Sea .
Every Estuary providesConnection a Connection that connectionFrom a River and that connectionTo exactly 1 Sea .
Every Inlet directlyLocatedIn something that is a Estuary or that is a Lake or that is a River or that is a Sea .
Every River connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Stream .
Every River flowsInto nothing but something that is a Lake or that is a Reservoir or that is a River or that is a Sea .
Every River flowsInto something that is a Lake or that is a Reservoir or that is a River or that is a Sea .
Every RiverMouth providesConnection a Connection that connectionFrom exactly 1 River and that connectionTo something that is a Lake or that is a River or that is a Sea .
Every Sea hasCurrent a Current .
Every Sea is a BodyOfWater .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
No Inlet is a Sea .
No Leat is a Sea .
No Pond is a Sea .
No Reservoir is a Sea .
No River is a Sea .
No River is something that flowsInto a Lake and that flowsInto a Reservoir and that flowsInto a River and that flowsInto a Sea .
No RiverMouth is a Sea .
No RiverStretch is a Sea .
No Sea is a Bay .
No Sea is a Confluence .
No Sea is a Estuary .
No Sea is a Lake .
No Sea is a Pool .
No Sea is a Pool.InRiver .
No Sea is a Rapids .
No Sea is a Stream .
No Sea is a Whirlpool .
No Spring is a Sea .

Season

Every Autumn is a Season .
Every Season is a Duration .
Every Season is something that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter .
Every Spring.Season is a Season .
Every Summer is a Season .
Every Winter is a Season .
Everything that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter is a Season .
Everything that is seasonallyExistsDuring by something is a Season .

Shape

Every Shape is a Modifier .
Every SheerShape is a Shape .
Everything that is hasShape by something is a Shape .
No Direction is a Shape .
No Size is a Shape .
No WaterPressure is a Shape .

SheerShape

Every Cataract hasShape a SheerShape .
Every SheerShape is a Shape .

Sink

Every Sink hasFootprint a Footprint .
Every Sink is a Hole that locatedWhere a Stream that flowsInto a GroundSurface .
Every Sink is a HydrologyConcepts .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
No AreaOfLand is a Sink .
No Bank is a Sink .
No Basin is a Sink .
No Bed is a Sink .
No BodyOfWater is a Sink .
No Canal is a Sink .
No CanalStretch is a Sink .
No Channel is a Sink .
No DisusedCanalStretch is a Sink .
No DryCanalStretch is a Sink .
No DryDisusedCanalStretch is a Sink .
No Flume is a Sink .
No Ford is a Sink .
No Pipe is a Sink .
No Structure is a Sink .
Sink hasSynonym " Sink Hole " .

Size

Every LargeSize is a Size .
Every MediumSize is a Size .
Every Size is a Modifier .
Every Size is a ValuePartition .
Every Size is something that is a LargeSize or that is a MediumSize or that is a SmallSize .
Every SmallSize is a Size .
Everything that is a LargeSize or that is a MediumSize or that is a SmallSize is a Size .
Everything that is hasSize by something is a Size .
LargeSize isPartOfValuePartition Size .
MediumSize isPartOfValuePartition Size .
No Direction is a Size .
No Size is a Shape .
No Size is a WaterPressure .
Size hasPatternPart LargeSize .
Size hasPatternPart MediumSize .
Size hasPatternPart Size .
Size hasPatternPart SmallSize .
Size hasPatternPart hasSize .
Size isPartOfValuePartition Size .
SmallSize isPartOfValuePartition Size .
hasSize isPartOfValuePartition Size .

Slope

No Cover is a Slope .
No FloodPrevention is a Slope .
No HydrologyConcepts is a Slope .
No InlandNavigation is a Slope .
No Slope is a Animal .
No Slope is a Boulder .
No Slope is a Cave .
No Slope is a Cliff .
No Slope is a Connection .
No Slope is a ContainmentOfSalmon .
No Slope is a ContainmentOfWater .
No Slope is a Dyke.Rock .
No Slope is a Embankment .
No Slope is a Escarpment .
No Slope is a FishMigration .
No Slope is a Flood .
No Slope is a Footprint .
No Slope is a GroundSurface .
No Slope is a Hill .
No Slope is a IndustrialArea .
No Slope is a Industry .
No Slope is a Land .
No Slope is a LeisureActivity .
No Slope is a Mill .
No Slope is a Modifier .
No Slope is a Mountain .
No Slope is a PastureLand .
No Slope is a Path .
No Slope is a PoliticalGeographicArea .
No Slope is a Process .
No Slope is a Property .
No Slope is a RiverCrossing .
No Slope is a Road .
No Slope is a RockStep .
No Slope is a StreamCrossing .
No Slope is a Substance .
No Slope is a TemporalConcept .
No Slope is a Valley .
No Track is a Slope .

SluiceGate

Every CanalFeeder controlledBy a SluiceGate .
Every Reservoir controlledBy nothing but something that is a Dam or that is a SluiceGate .
Every Reservoir controlledBy something that is a Dam or that is a SluiceGate .
Every SluiceGate hasPrimaryPurpose a ControlOfWaterFlow .
Every SluiceGate is a Structure .
Every SluiceGate isDirectComponentOf a Canal .
No Castle is a SluiceGate .
No LockGate is a SluiceGate .
No SluiceGate is a Dam .
No SluiceGate is a Fort .
No SluiceGate is a SalmonLadder .
No SluiceGate is a Weir .
SluiceGate hasSynonym " Sluice " .
SluiceGate hasSynonym " Sluice Gate " .

SmallSize

Every Lochan hasSize a SmallSize .
Every Size is something that is a LargeSize or that is a MediumSize or that is a SmallSize .
Every SmallSize is a Size .
Everything that is a LargeSize or that is a MediumSize or that is a SmallSize is a Size .
No LargeSize is a SmallSize .
No MediumSize is a SmallSize .
Size hasPatternPart SmallSize .
SmallSize isPartOfValuePartition Size .

Somerset

Every Rhyne is something that hasRegionalSynonym a AgriculturalDrain and that hasDirectGeographicLocation Somerset .

Source

Every HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream is a Source .
Every River hasDirectComponent a Source .
Every Source is a HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream .
Every Stream hasDirectComponent a Source .

Spa

Every Spa contains a MineralSalts .
Every Spa is a Spring .
No Spa is a DykeSpring .
No Spa is a Spout .
Spa hasSynonym " Mineral Spring " .

Spout

Every Spout hasWaterPressure a HighWaterPressure .
Every Spout is a Spring .
No Spa is a Spout .
No Spout is a DykeSpring .

Spring

Every DykeSpring is a Spring .
Every HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream is a Source .
Every IntermittentSpring is a Spring that participatesIn a WaterFlowProcess that hasFrequency a Intermittent .
Every Source is a HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream .
Every Spa is a Spring .
Every Spout is a Spring .
Every Spring flowsOutOf a GroundSurface .
Every Spring is a BodyOfWater .
Every Spring that participatesIn a WaterFlowProcess that hasFrequency a Intermittent is a IntermittentSpring .
No Pond is a Spring .
No Reservoir is a Spring .
No RiverMouth is a Spring .
No RiverStretch is a Spring .
No Spring is a Bay .
No Spring is a Confluence .
No Spring is a Estuary .
No Spring is a Inlet .
No Spring is a Lake .
No Spring is a Leat .
No Spring is a Pool .
No Spring is a Pool.InRiver .
No Spring is a Rapids .
No Spring is a River .
No Spring is a Sea .
No Spring is a Stream .
No Spring is a Whirlpool .

Spring.Season

Every Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water is a WaterMeadow .
Every Season is something that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter .
Every Spring.Season is a Season .
Every WaterMeadow enables a PastureLand that occursDuring a Spring.Season .
Every WaterMeadow is a Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water .
Everything that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter is a Season .

Stream

Every Backwater isDirectComponentOf something that is a River or that is a Stream .
Every Beck hasRegionalSynonym a Stream that hasDirectGeographicLocation Northern_England .
Every Beck is a Stream .
Every Bourne is a Stream .
Every Brook hasRegionalSynonym a Stream that hasDirectGeographicLocation England .
Every Brook is a Stream .
Every Burn hasRegionalSynonym a Stream that hasDirectGeographicLocation Northern_England or that hasDirectGeographicLocation Scotland or that hasDirectGeographicLocation nothing but something that is Northern_England or that is Scotland .
Every Burn is a Stream .
Every Canal connectedTo nothing but something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every Canal connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Stream .
Every CanalFeeder directlyConnectedTo something that is a River or that is a Stream .
Every Confluence isComponentOf something that is a Canal.Water or that is a River or that is a Stream .
Every Dam.Water directlyLocatedIn something that is a River or that is a Stream .
Every Ford isComponentOf something that is a River or that is a Stream .
Every HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream is a Source .
Every InfluentStream is a Stream .
Every Lake directlyConnectedTo nothing but something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every Lake directlyConnectedTo something that is a Canal or that is a Reservoir or that is a River or that is a Stream .
Every Lode is a Stream .
Every MillStream is a Stream .
Every Nant hasRegionalSynonym a Stream that hasDirectGeographicLocation Wales .
Every Nant is a Stream .
Every Pond directlyConnectedTo nothing but something that is a Canal.Water or that is a River or that is a Stream .
Every Pool directlyConnectedTo nothing but something that is a Canal.Water or that is a River or that is a Stream .
Every Pool.InRiver isDirectComponentOf something that is a River or that is a Stream .
Every Rapids isDirectComponentOf something that is a River or that is a Stream .
Every Rill is a Stream that flowsIn a Gully .
Every River connectedTo something that is a Canal or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Stream .
Every Rivulet is a Stream .
Every Sink is a Hole that locatedWhere a Stream that flowsInto a GroundSurface .
Every Source is a HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream .
Every Stream flowsIn a Channel .
Every Stream flowsTo something that is a Estuary or that is a Lake or that is a Pond or that is a Pool or that is a Reservoir or that is a River or that is a Sea or that is a Sink or that is a Stream .
Every Stream hasCurrent a Current .
Every Stream hasDirectComponent a Source .
Every Stream is a BodyOfWater .
Every Stream that flowsIn a Gully is a Rill .
Every Syke is a Stream .
Every Wetland directlyConnectedTo nothing but something that is a Canal.Water or that is a Lake or that is a Pond or that is a Pool or that is a River or that is a Stream or that is a Wetland .
Every Whirlpool directlyLocatedIn something that is a River or that is a Stream .
No Bay is a Stream .
No Confluence is a Stream .
No Estuary is a Stream .
No Inlet is a Stream .
No Lake is a Stream .
No Leat is a Stream .
No Pond is a Stream .
No Pool is a Stream .
No Pool.InRiver is a Stream .
No Rapids is a Stream .
No Reservoir is a Stream .
No RiverMouth is a Stream .
No RiverStretch is a Stream .
No Sea is a Stream .
No Spring is a Stream .
No Whirlpool is a Stream .

StreamCrossing

Every Ford hasPrimaryPurpose something that is a RiverCrossing or that is a StreamCrossing .
No Cliff is a StreamCrossing .
No Cover is a StreamCrossing .
No FishMigration is a StreamCrossing .
No FloodPrevention is a StreamCrossing .
No GroundSurface is a StreamCrossing .
No HydrologyConcepts is a StreamCrossing .
No InlandNavigation is a StreamCrossing .
No Property is a StreamCrossing .
No Slope is a StreamCrossing .
No StreamCrossing is a Animal .
No StreamCrossing is a Boulder .
No StreamCrossing is a Cave .
No StreamCrossing is a Connection .
No StreamCrossing is a ContainmentOfSalmon .
No StreamCrossing is a ContainmentOfWater .
No StreamCrossing is a Dyke.Rock .
No StreamCrossing is a Embankment .
No StreamCrossing is a Escarpment .
No StreamCrossing is a Flood .
No StreamCrossing is a Footprint .
No StreamCrossing is a Hill .
No StreamCrossing is a IndustrialArea .
No StreamCrossing is a Industry .
No StreamCrossing is a Land .
No StreamCrossing is a LeisureActivity .
No StreamCrossing is a Mill .
No StreamCrossing is a Modifier .
No StreamCrossing is a Mountain .
No StreamCrossing is a PastureLand .
No StreamCrossing is a Path .
No StreamCrossing is a PoliticalGeographicArea .
No StreamCrossing is a Process .
No StreamCrossing is a RiverCrossing .
No StreamCrossing is a Road .
No StreamCrossing is a RockStep .
No StreamCrossing is a Valley .
No Substance is a StreamCrossing .
No TemporalConcept is a StreamCrossing .
No Track is a StreamCrossing .

Structure

Every Castle is a Structure .
Every Dam is a Structure .
Every Fort is a Structure .
Every LockGate is a Structure .
Every SalmonLadder is a Structure .
Every SluiceGate is a Structure .
Every Structure hasFootprint a Footprint .
Every Structure is a HydrologyConcepts .
Every Weir is a Structure .
No AreaOfLand is a Structure .
No Basin is a Structure .
No Canal is a Structure .
No CanalStretch is a Structure .
No DryCanalStretch is a Structure .
No Flume is a Structure .
No Ford is a Structure .
No Structure is a Bank .
No Structure is a Bed .
No Structure is a BodyOfWater .
No Structure is a Channel .
No Structure is a DisusedCanalStretch .
No Structure is a DryDisusedCanalStretch .
No Structure is a Pipe .
No Structure is a Sink .

Substance

Every Chalk is a Substance .
Every Limestone is a Substance .
Every MineralSalts is a Substance .
Every Peat is a Substance .
Every Water is a Substance .
No Cliff is a Substance .
No Cover is a Substance .
No FishMigration is a Substance .
No FloodPrevention is a Substance .
No HydrologyConcepts is a Substance .
No InlandNavigation is a Substance .
No Property is a Substance .
No Slope is a Substance .
No Substance is a Animal .
No Substance is a Boulder .
No Substance is a Cave .
No Substance is a Connection .
No Substance is a ContainmentOfSalmon .
No Substance is a ContainmentOfWater .
No Substance is a Dyke.Rock .
No Substance is a Embankment .
No Substance is a Escarpment .
No Substance is a Flood .
No Substance is a Footprint .
No Substance is a GroundSurface .
No Substance is a Hill .
No Substance is a IndustrialArea .
No Substance is a Industry .
No Substance is a Land .
No Substance is a LeisureActivity .
No Substance is a Mill .
No Substance is a Modifier .
No Substance is a Mountain .
No Substance is a PastureLand .
No Substance is a Path .
No Substance is a PoliticalGeographicArea .
No Substance is a Process .
No Substance is a RiverCrossing .
No Substance is a Road .
No Substance is a RockStep .
No Substance is a StreamCrossing .
No Substance is a Valley .
No TemporalConcept is a Substance .
No Track is a Substance .

Summer

Every Season is something that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter .
Every Summer is a Season .
Everything that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter is a Season .

Survey

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
Purpose: To describe in an unambiguous manner the inland hydrology feature classes surveyed by Ordnance Survey with the intention of improving the use of the surveyed data by our customers and enabling semi-automatic processing of these data .
[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

Swamp

Every Swamp floodedBy a Water .
Every Swamp is a Wetland .
No Bog is a Swamp .
No Fen is a Swamp .
No Marsh is a Swamp .
No Swamp contains a Peat .

Syke

Every Syke is a Stream .
Every Syke locatedOn a Wetland .
No Brook is a Syke .
No Lode is a Syke .
No Nant is a Syke .
No Rivulet is a Syke .
No Syke is a Beck .
No Syke is a Bourne .
No Syke is a Burn .
No Syke is a InfluentStream .
No Syke is a MillStream .
Syke hasSynonym " " .

Tarn

Every Tarn hasDirectGeographicLocation Northern_England .
Every Tarn is a Lake .
Every Tarn locatedOn a Mountain .

TemporalConcept

Every Duration is a TemporalConcept .
Every Frequency is a TemporalConcept .
No Cover is a TemporalConcept .
No FloodPrevention is a TemporalConcept .
No HydrologyConcepts is a TemporalConcept .
No InlandNavigation is a TemporalConcept .
No Slope is a TemporalConcept .
No TemporalConcept is a Animal .
No TemporalConcept is a Boulder .
No TemporalConcept is a Cave .
No TemporalConcept is a Cliff .
No TemporalConcept is a Connection .
No TemporalConcept is a ContainmentOfSalmon .
No TemporalConcept is a ContainmentOfWater .
No TemporalConcept is a Dyke.Rock .
No TemporalConcept is a Embankment .
No TemporalConcept is a Escarpment .
No TemporalConcept is a FishMigration .
No TemporalConcept is a Flood .
No TemporalConcept is a Footprint .
No TemporalConcept is a GroundSurface .
No TemporalConcept is a Hill .
No TemporalConcept is a IndustrialArea .
No TemporalConcept is a Industry .
No TemporalConcept is a Land .
No TemporalConcept is a LeisureActivity .
No TemporalConcept is a Mill .
No TemporalConcept is a Modifier .
No TemporalConcept is a Mountain .
No TemporalConcept is a PastureLand .
No TemporalConcept is a Path .
No TemporalConcept is a PoliticalGeographicArea .
No TemporalConcept is a Process .
No TemporalConcept is a Property .
No TemporalConcept is a RiverCrossing .
No TemporalConcept is a Road .
No TemporalConcept is a RockStep .
No TemporalConcept is a StreamCrossing .
No TemporalConcept is a Substance .
No TemporalConcept is a Valley .
No Track is a TemporalConcept .

The

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
The ontology modules (Spatial relations, Network relations, Language relations, Political geography and Mereology) include only those relationships and concepts that were directly relevant to the Hydrology ontology .

TidalProcess

Every TidalProcess is a Process .
Every TidalRiverStretch actedOnBy a TidalProcess .
No ControlOfWaterFlow is a TidalProcess .
No ControlOfWaterLevel is a TidalProcess .
No TidalProcess is a Drainage .
No TimberStorage is a TidalProcess .
No TransportOfWater is a TidalProcess .
No WaterFlowProcess is a TidalProcess .
No WaterSupply is a TidalProcess .

TidalRiver

Every River that hasDirectComponent a TidalRiverStretch is a TidalRiver .
Every TidalRiver is a River that hasDirectComponent a TidalRiverStretch .
Every TidalRiverStretch isDirectComponentOf a TidalRiver .
TidalRiver hasSynonym " Tidal River " .

TidalRiverStretch

Every River that hasDirectComponent a TidalRiverStretch is a TidalRiver .
Every TidalRiver is a River that hasDirectComponent a TidalRiverStretch .
Every TidalRiverStretch actedOnBy a TidalProcess .
Every TidalRiverStretch is a RiverStretch .
Every TidalRiverStretch isDirectComponentOf a TidalRiver .
TidalRiverStretch hasSynonym " Tidal River Stretch " .

TimberPond

Every Pond that hasPrimaryPurpose a TimberStorage is a TimberPond .
Every TimberPond adjacentTo a River .
Every TimberPond is a Pond that hasPrimaryPurpose a TimberStorage .
Every TimberPond is something .
TimberPond hasSynonym " Timber Pond " .

TimberStorage

Every Pond that hasPrimaryPurpose a TimberStorage is a TimberPond .
Every TimberPond is a Pond that hasPrimaryPurpose a TimberStorage .
Every TimberStorage is a Process .
No ControlOfWaterFlow is a TimberStorage .
No ControlOfWaterLevel is a TimberStorage .
No TimberStorage is a Drainage .
No TimberStorage is a TidalProcess .
No TransportOfWater is a TimberStorage .
No WaterFlowProcess is a TimberStorage .
No WaterSupply is a TimberStorage .

To

Purpose: To describe in an unambiguous manner the inland hydrology feature classes surveyed by Ordnance Survey with the intention of improving the use of the surveyed data by our customers and enabling semi-automatic processing of these data .

Track

Every Ford isComponentOf something that is a Path or that is a Road or that is a Track .
No InlandNavigation is a Track .
No Track is a Animal .
No Track is a Boulder .
No Track is a Cave .
No Track is a Cliff .
No Track is a Connection .
No Track is a ContainmentOfSalmon .
No Track is a ContainmentOfWater .
No Track is a Cover .
No Track is a Dyke.Rock .
No Track is a Embankment .
No Track is a Escarpment .
No Track is a FishMigration .
No Track is a Flood .
No Track is a FloodPrevention .
No Track is a Footprint .
No Track is a GroundSurface .
No Track is a Hill .
No Track is a HydrologyConcepts .
No Track is a IndustrialArea .
No Track is a Industry .
No Track is a Land .
No Track is a LeisureActivity .
No Track is a Mill .
No Track is a Modifier .
No Track is a Mountain .
No Track is a PastureLand .
No Track is a Path .
No Track is a PoliticalGeographicArea .
No Track is a Process .
No Track is a Property .
No Track is a RiverCrossing .
No Track is a Road .
No Track is a RockStep .
No Track is a Slope .
No Track is a StreamCrossing .
No Track is a Substance .
No Track is a TemporalConcept .
No Track is a Valley .

TransportOfWater

Every Culvert hasPrimaryPurpose a TransportOfWater that transportsUnder a Road .
Every Flume hasPrimaryPurpose a TransportOfWater that usedBy a Industry or that usedFor a Irrigation .
Every Leat.Channel hasPrimaryPurpose a TransportOfWater that usedBy a Industry .
Every Pipe enables a TransportOfWater .
Every TransportOfWater is a Process .
No ControlOfWaterFlow is a TransportOfWater .
No TransportOfWater is a ControlOfWaterLevel .
No TransportOfWater is a Drainage .
No TransportOfWater is a TidalProcess .
No TransportOfWater is a TimberStorage .
No WaterFlowProcess is a TransportOfWater .
No WaterSupply is a TransportOfWater .

Tributary

Every Tributary is a HydrologyConcepts .

TurbulentCurrent

Every Rapids hasCurrent a TurbulentCurrent .
Every TurbulentCurrent is a Current .

TypicalBalancingPond

Every BalancingPond that adjacentTo a Canal is a TypicalBalancingPond .
Every TypicalBalancingPond is a BalancingPond that adjacentTo a Canal .

TypicalBasin.Container

Every Basin that contains a Water is a TypicalBasin.Container .
Every TypicalBasin.Container is a Basin that contains a Water .

TypicalBog

Every Bog that fedBy a RainWater is a TypicalBog .
Every TypicalBog is a Bog that fedBy a RainWater .

TypicalBroad

Every Broad that hasDirectGeographicLocation East_Anglia is a TypicalBroad .
Every TypicalBroad is a Broad that hasDirectGeographicLocation East_Anglia .

TypicalCatchDrain

Every CatchDrain that contains a Water is a TypicalCatchDrain .
Every TypicalCatchDrain is a CatchDrain that contains a Water .

TypicalChannel

Every Channel that contains a Water is a TypicalChannel .
Every TypicalChannel is a Channel that contains a Water .

TypicalDitch

Every Ditch that directlyLocatedIn a Field is a TypicalDitch .
Every TypicalDitch is a Ditch that directlyLocatedIn a Field .

TypicalDrain

Every Drain that directlyLocatedIn a Field is a TypicalDrain .
Every TypicalDrain is a Drain that directlyLocatedIn a Field .

TypicalFen

Every Fen that fedBy a GroundWater is a TypicalFen .
Every TypicalFen is a Fen that fedBy a GroundWater .

Valley

No Boulder is a Valley .
No Cave is a Valley .
No Cliff is a Valley .
No Connection is a Valley .
No ContainmentOfSalmon is a Valley .
No ContainmentOfWater is a Valley .
No Cover is a Valley .
No Dyke.Rock is a Valley .
No Embankment is a Valley .
No FishMigration is a Valley .
No Flood is a Valley .
No FloodPrevention is a Valley .
No Footprint is a Valley .
No GroundSurface is a Valley .
No Hill is a Valley .
No HydrologyConcepts is a Valley .
No IndustrialArea is a Valley .
No Industry is a Valley .
No InlandNavigation is a Valley .
No Land is a Valley .
No Mill is a Valley .
No Modifier is a Valley .
No Mountain is a Valley .
No PastureLand is a Valley .
No Path is a Valley .
No PoliticalGeographicArea is a Valley .
No Process is a Valley .
No Property is a Valley .
No RiverCrossing is a Valley .
No Road is a Valley .
No RockStep is a Valley .
No Slope is a Valley .
No StreamCrossing is a Valley .
No Substance is a Valley .
No TemporalConcept is a Valley .
No Track is a Valley .
No Valley is a Animal .
No Valley is a Escarpment .
No Valley is a LeisureActivity .

ValuePartition

Every Size is a ValuePartition .
Every WaterPressure is a ValuePartition .

Wales

Every Aber hasRegionalSynonym something that hasDirectGeographicLocation Wales , and that is a Confluence or that is a RiverMouth .
Every Afon hasRegionalSynonym a River that hasDirectGeographicLocation Wales .
Every Llyn hasRegionalSynonym a Lake that hasDirectGeographicLocation Wales .
Every Nant hasRegionalSynonym a Stream that hasDirectGeographicLocation Wales .

Water

Every Axiom_2 contains something that madeOf a Water .
Every Basin enables something that contains a Water .
Every Basin that contains a Water is a TypicalBasin.Container .
Every BodyOfWater madeOf a Water .
Every CatchDrain that contains a Water is a TypicalCatchDrain .
Every Channel that contains a Water is a TypicalChannel .
Every ControlOfWaterFlow actsSpecificallyOn a Water .
Every FallingWater is a Water .
Every GroundWater is a Water .
Every IndustrialWater is a Water .
Every Marsh temporarilyFloodedBy a Water .
Every Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water is a WaterMeadow .
Every RainWater is a Water .
Every SalmonLadder contains a Water .
Every Swamp floodedBy a Water .
Every TypicalBasin.Container is a Basin that contains a Water .
Every TypicalCatchDrain is a CatchDrain that contains a Water .
Every TypicalChannel is a Channel that contains a Water .
Every Water is a Substance .
Every WaterMeadow is a Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water .
Every Wetland saturatedBy a Water .
Everything that contains something that madeOf a Water is a Axiom_2 .
No MineralSalts is a Water .
No Peat is a Water .
No Water is a Chalk .
No Water is a Limestone .

WaterFlowProcess

Every IntermittentSpring is a Spring that participatesIn a WaterFlowProcess that hasFrequency a Intermittent .
Every Spring that participatesIn a WaterFlowProcess that hasFrequency a Intermittent is a IntermittentSpring .
Every WaterFlowProcess is a Process .
No ControlOfWaterFlow is a WaterFlowProcess .
No WaterFlowProcess is a ControlOfWaterLevel .
No WaterFlowProcess is a Drainage .
No WaterFlowProcess is a TidalProcess .
No WaterFlowProcess is a TimberStorage .
No WaterFlowProcess is a TransportOfWater .
No WaterSupply is a WaterFlowProcess .

WaterMeadow

Every Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water is a WaterMeadow .
Every WaterMeadow enables a PastureLand that occursDuring a Spring.Season .
Every WaterMeadow is a Meadow that directlyLocatedIn a Floodplain and that occursDuring a Spring.Season and that contains a Water .
WaterMeadow hasSynonym " Water Meadow " .

WaterPressure

Every HighWaterPressure is a WaterPressure .
Every LowWaterPressure is a WaterPressure .
Every MediumWaterPressure is a WaterPressure .
Every WaterPressure is a Modifier .
Every WaterPressure is a ValuePartition .
Every WaterPressure is something that is a HighWaterPressure or that is a LowWaterPressure or that is a MediumWaterPressure .
Everything that is a HighWaterPressure or that is a LowWaterPressure or that is a MediumWaterPressure is a WaterPressure .
Everything that is hasWaterPressure by something is a WaterPressure .
HighWaterPressure isPartOfValuePartition WaterPressure .
LowWaterPressure isPartOfValuePartition WaterPressure .
MediumWaterPressure isPartOfValuePartition WaterPressure .
No Direction is a WaterPressure .
No Size is a WaterPressure .
No WaterPressure is a Shape .
WaterPressure hasPatternPart HighWaterPressure .
WaterPressure hasPatternPart LowWaterPressure .
WaterPressure hasPatternPart MediumWaterPressure .
WaterPressure hasPatternPart WaterPressure .
WaterPressure hasPatternPart hasWaterPressure .
WaterPressure isPartOfValuePartition WaterPressure .
hasWaterPressure isPartOfValuePartition WaterPressure .

WaterSupply

Every DewPond hasPrimaryPurpose a WaterSupply that supplyTo a Livestock .
Every Irrigation is a WaterSupply .
Every MillPond hasPrimaryPurpose a WaterSupply .
Every Reservoir hasPrimaryPurpose a WaterSupply .
Every WaterSupply is a Process .
Every WaterSupply that supplyTo a Canal is a WaterSupplyToCanal .
Every WaterSupplyToCanal is a WaterSupply that supplyTo a Canal .
No WaterSupply is a ControlOfWaterFlow .
No WaterSupply is a ControlOfWaterLevel .
No WaterSupply is a Drainage .
No WaterSupply is a TidalProcess .
No WaterSupply is a TimberStorage .
No WaterSupply is a TransportOfWater .
No WaterSupply is a WaterFlowProcess .

WaterSupplyToCanal

Every BodyOfWater that isDirectComponentOf a Canal and that hasPrimaryPurpose a WaterSupplyToCanal is a CanalFeeder .
Every CanalFeeder is a BodyOfWater that isDirectComponentOf a Canal and that hasPrimaryPurpose a WaterSupplyToCanal .
Every WaterSupply that supplyTo a Canal is a WaterSupplyToCanal .
Every WaterSupplyToCanal is a WaterSupply that supplyTo a Canal .
No WaterSupplyToCanal is a Irrigation .

Waterfall

Every Cascade is a Waterfall .
Every Cataract is a Waterfall .
Every Force hasRegionalSynonym a Waterfall that hasDirectGeographicLocation Northern_England .
Every Force is a Waterfall .
Every Linn hasRegionalSynonym a Waterfall that hasDirectGeographicLocation Scotland .
Every Linn is a Waterfall .
Every PlungePool locatedAt a Waterfall .
Every PlungePool locatedAt nothing but a Waterfall .
Every Pot locatedNear something that is a Rapids or that is a Waterfall .
Every Waterfall flowsOver a RockStep .
Every Waterfall hasCurrent a Current .
No Waterfall enables a InlandNavigation .

Waterway

Every Waterway is a HydrologyConcepts .
Every Waterway is something that hasPrimaryPurpose a InlandNavigation , and that is a Canal.Water or that is a River .
Everything that hasPrimaryPurpose a InlandNavigation , and that is a Canal.Water or that is a River is a Waterway .

Weir

Every SalmonLadder locatedNear something that is a Dam or that is a Weir .
Every Weir hasPrimaryPurpose a ControlOfWaterFlow .
Every Weir is a Structure .
No Castle is a Weir .
No Dam is a Weir .
No Fort is a Weir .
No LockGate is a Weir .
No SalmonLadder is a Weir .
No SluiceGate is a Weir .

Wetland

Every Bog is a Wetland .
Every Channel is something that connectedTo a Basin or that connectedTo a Channel or that connectedTo a Pipe or that connectedTo a Wetland .
Every Fen is a Wetland .
Every HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream is a Source .
Every Marsh is a Wetland .
Every Source is a HydrologyConcepts that is a Spring or that is a Wetland and that feeds something that is a River or that is a Stream .
Every Swamp is a Wetland .
Every Syke locatedOn a Wetland .
Every Wetland directlyConnectedTo nothing but something that is a Canal.Water or that is a Lake or that is a Pond or that is a Pool or that is a River or that is a Stream or that is a Wetland .
Every Wetland hasFootprint a Footprint .
Every Wetland is a AreaOfLand .
Every Wetland saturatedBy a Water .
No Floodplain is a Wetland .
No Wetland is a Field .

Whirlpool

Every Whirlpool directlyLocatedIn something that is a River or that is a Stream .
Every Whirlpool hasCurrent a Current that hasFlowDirection a CircularDirection .
Every Whirlpool is a BodyOfWater .
No Estuary is a Whirlpool .
No Inlet is a Whirlpool .
No Leat is a Whirlpool .
No Pond is a Whirlpool .
No Reservoir is a Whirlpool .
No River is a Whirlpool .
No RiverMouth is a Whirlpool .
No RiverStretch is a Whirlpool .
No Sea is a Whirlpool .
No Spring is a Whirlpool .
No Whirlpool is a Bay .
No Whirlpool is a Confluence .
No Whirlpool is a Lake .
No Whirlpool is a Pool .
No Whirlpool is a Pool.InRiver .
No Whirlpool is a Rapids .
No Whirlpool is a Stream .

Winter

Every Bourne seasonallyExistsDuring a Winter .
Every Season is something that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter .
Every Winter is a Season .
Everything that is a Autumn or that is a Spring.Season or that is a Summer or that is a Winter is a Season .

World

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

[1]

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .
[1] Ordnance Survey (2001) Ordnance Survey Master Map Real World Objects Catalogue, v. 1.0, November 2001. " .

[1],

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .

actedOnBy

Every TidalRiverStretch actedOnBy a TidalProcess .
If something X actedOnBy something Y then Y actsOn X .
If something X actsOn something Y then Y actedOnBy X .

actsOn

If something X actedOnBy something Y then Y actsOn X .
If something X actsOn something Y then Y actedOnBy X .
If something X actsSpecificallyOn something Y then X actsOn Y .
If something X1 actsOn something X2 and X2 actsOn something X3 then X1 actsOn X3 .

actsSpecificallyOn

Every ControlOfWaterFlow actsSpecificallyOn a Water .
Everything actsSpecificallyOn at most 1 thing .
If something X actsSpecificallyOn something Y then X actsOn Y .

added

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .

additional

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .

adjacentTo

Every AgriculturalDrain adjacentTo a AgriculturalField .
Every BalancingPond that adjacentTo a Canal is a TypicalBalancingPond .
Every Floodplain adjacentTo a River .
Every OverflowChannel adjacentTo a Lake .
Every TimberPond adjacentTo a River .
Every TypicalBalancingPond is a BalancingPond that adjacentTo a Canal .

after

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .

also

Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been taken from Ordnance Survey Master Map Real World Objects Catalogue [1] but they have been completed and modified where descriptions were insufficient. The sources of the additional definitions are noted after each definition .

are

Every Cascade flowsOver at least 2 things that are a Boulder or that are a RockStep .
Feature terms have primarily been taken from the Ordnance Survey Master Map Real World Objects Catalogue [1], however new terms have also been added in order to ensure the completeness of the domain. The feature definitions have also been