rdfs:comment"An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea."@en;
rdfs:label"Estuary"@en.
### https://saref.etsi.org/saref4watr/FireHydrant
s4watr:FireHydrantrdf:typeowl:Class;
rdfs:subClassOfs4watr:WaterAsset;
rdfs:subClassOfs4watr:WaterDevice;
rdfs:comment"A fire hydrant is a fitting in a street or other public place with a nozzle by which a fire hose may be attached to a water main."@en;
rdfs:label"Fire hydrant"@en.
### https://saref.etsi.org/saref4watr/Glacier
s4watr:Glacierrdf:typeowl:Class;
rdfs:subClassOfs4watr:SourceAsset;
rdfs:comment"A glacier is a persistent body of dense ice that is constantly moving under its own weight."@en;
rdfs:label"Glacier"@en.
### https://saref.etsi.org/saref4watr/Intake
s4watr:Intakerdf:typeowl:Class;
rdfs:subClassOfs4watr:WaterAsset;
rdfs:subClassOfs4watr:TransportAsset;
rdfs:comment"An intake is an installation for obtaining water from a source of supply (river, lake, reservoir, and so on)."@en;
rdfs:label"Intake"@en.
### https://saref.etsi.org/saref4watr/Lagoon
s4watr:Lagoonrdf:typeowl:Class;
rdfs:subClassOfs4watr:SourceAsset;
rdfs:comment"A lagoon is a shallow body of water separated from a larger body of water by barrier islands or reefs."@en;
rdfs:label"Lagoon"@en.
### https://saref.etsi.org/saref4watr/Lake
s4watr:Lakerdf:typeowl:Class;
rdfs:subClassOfs4watr:SourceAsset;
rdfs:comment"A lake is an area filled with water, localized in a basin, surrounded by land, apart from any river or other outlet that serves to feed or drain the lake."@en;
rdfs:label"Lake"@en.
### https://saref.etsi.org/saref4watr/Main
s4watr:Mainrdf:typeowl:Class;
rdfs:subClassOfs4watr:WaterAsset;
rdfs:subClassOfs4watr:TransportAsset;
rdfs:comment"A main is a passage of water to flow through."@en;
rdfs:label"Main"@en.
### https://saref.etsi.org/saref4watr/Manhole
s4watr:Manholerdf:typeowl:Class;
rdfs:subClassOfs4watr:WaterAsset;
rdfs:subClassOfs4watr:TransportAsset;
rdfs:comment"A maintenance hole is an enclosure that facilitates human access to and working space for equipment."@en;
rdfs:comment"A vent is the part of a system that allows air to enter a plumbing system to maintain proper air pressure and sewer gases to escape to the outside."@en;