[
  {
    "@id": "http://qudt.org/schema/qudt/hasQuantityKind",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://qudt.org/2.1/schema/qudt"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "qudt:hasQuantityKind"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://qudt.org/schema/qudt/QuantityKind"
      }
    ]
  },
  {
    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b24",
    "@type": [
      "http://www.w3.org/2002/07/owl#AllDisjointClasses"
    ],
    "http://www.w3.org/2002/07/owl#members": [
      {
        "@list": [
          {
            "@id": "http://hyfo.spatialai.org/v1/hyfo#SubsurfaceWaterFeature"
          },
          {
            "@id": "http://hyfo.spatialai.org/v1/hyfo#SurfaceWaterFeature"
          }
        ]
      }
    ]
  },
  {
    "@id": "http://www.opengis.net/ont/geosparql#Geometry",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://www.w3.org/2000/01/rdf-schema#comment": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A coherent set of direct positions in space. The positions are held within a Spatial Reference System (SRS)."
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#"
      },
      {
        "@id": "http://www.opengis.net/spec/geosparql/1.0/req/geometry-extension/geometry-class"
      },
      {
        "@id": "http://www.opengis.net/spec/geosparql/1.1/req/geometry-extension/geometry-class"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "geo:Geometry"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#SpatialObject"
      }
    ]
  },
  {
    "@id": "http://www.w3.org/2004/02/skos/core#note",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#partOfMainStem",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Connects an elementary flowpath (e.g., NHDFlowline) to its main stem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:partOfMainStem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#MainStem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subPropertyOf": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#partOfFlowPath"
      }
    ]
  },
  {
    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b8",
    "@type": [
      "http://www.w3.org/2002/07/owl#AllDisjointClasses"
    ],
    "http://www.w3.org/2002/07/owl#members": [
      {
        "@list": [
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Canal"
          },
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Estuary"
          },
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Impoundment"
          },
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Lagoon"
          },
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Lake"
          },
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_River"
          }
        ]
      }
    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#SubsurfaceWaterFeature",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A complete subsurface water feature including water, container, and void (for example, aquifer, well, et al.)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:SubsurfaceWaterFeature"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeature"
      }
    ]
  },
  {
    "@id": "http://purl.org/dc/terms/publisher",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://www.w3.org/2004/02/skos/core#definition",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://wbd.spatialai.org/v1/wbd#primaryFlowPath",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates a drainage basin (area) to the primary mainstem flowing through it"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://wbd.spatialai.org/v1/wbd#DrainageBasin"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "wbd:primaryFlowPath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#MainStem"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Lake",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a body of surface water, participating in a hydrographic network, made special due to its considerable size"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_Lake"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody"
      }
    ]
  },
  {
    "@id": "http://purl.org/spatialai/spatial/spatial-full#connectedTo",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@value": "topological connection (spatial contact) (sawgraph)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subPropertyOf": [
      {
        "@id": "http://purl.org/spatialai/spatial/spatial-full#spatiallyRelatedTo"
      }
    ]
  },
  {
    "@id": "http://purl.org/dc/terms/creator",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#hasMainStemId",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates a nhdplusv2:MainStem feature to its unique identifier"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#MainStem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:hasMainStemId"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.w3.org/2001/XMLSchema#string"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentRealization",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "based on the idea that there are multiple hydrology-specific perspectives of the holistic catchment concept that are used to describe a catchment as a unit of study shared across sub-domains and studies"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_CatchmentRealization"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeatureRepresentation"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_HydroFeature",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a basic feature to reflect the properties that all hydrologic features have"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_HydroFeature"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#Feature"
      }
    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#gwWellUnit",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies the aquifers or confining beds intersecting the well"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_Well"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:gwWellUnit"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_AquiferUnit"
      }
    ],
    "http://www.w3.org/2002/07/owl#equivalentProperty": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#tapsAquifer"
      }
    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterWell",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A water well, with focus on the hole/shaft itself (see gwml2:GW_Well)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:WaterWell"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#SubsurfaceWaterFeature"
      }
    ],
    "http://www.w3.org/2002/07/owl#equivalentClass": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_Well"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A waterbody is part of the hydrographic network and is either standing in a depression or flowing in a channel, which are parts of the channel network"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_WaterBody"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_HydroFeature"
      },
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#SurfaceWaterFeature"
      }
    ]
  },
  {
    "@id": "http://qudt.org/schema/qudt/QuantityValue",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
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        "@id": "http://qudt.org/2.1/schema/qudt"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "qudt:QuantityValue"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/downstreamWaterBody",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies another waterbody immediately downstream, allowing network navigation without knowing an inflow or outflow of the catchment realized by the waterbody"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
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        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:downstreamWaterBody"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subPropertyOf": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#downstreamWaterBodyTC"
      }
    ],
    "http://www.w3.org/2002/07/owl#inverseOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/upstreamWaterBody"
      }
    ]
  },
  {
    "@id": "http://qudt.org/schema/qudt/Unit",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://qudt.org/2.1/schema/qudt"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "qudt:Unit"
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    ]
  },
  {
    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b18",
    "@type": [
      "http://www.w3.org/2002/07/owl#AllDisjointClasses"
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    "http://www.w3.org/2002/07/owl#members": [
      {
        "@list": [
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentRealization"
          },
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_HydroFeature"
          }
        ]
      }
    ]
  },
  {
    "@id": "http://qudt.org/schema/qudt/Quantity",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://qudt.org/2.1/schema/qudt"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "qudt:Quantity"
      }
    ]
  },
  {
    "@id": "http://purl.org/dc/terms/description",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://purl.org/spatialai/spatial/water-full",
    "@type": [
      "http://www.w3.org/2002/07/owl#Ontology"
    ],
    "http://purl.org/dc/elements/1.1/source": [
      {
        "@id": "https://raw.githubusercontent.com/SAWGraph/water-kg/refs/heads/main/ontologies/sawgraph-water-ontology.ttl"
      }
    ],
    "http://purl.org/dc/terms/contributor": [
      {
        "@id": "https://orcid.org/0000-0002-5331-5052"
      },
      {
        "@id": "https://orcid.org/0000-0002-9070-3169"
      },
      {
        "@id": "https://orcid.org/0000-0003-3271-6700"
      }
    ],
    "http://purl.org/dc/terms/created": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#date",
        "@value": "2024-09-04"
      }
    ],
    "http://purl.org/dc/terms/creator": [
      {
        "@id": "https://orcid.org/0000-0002-9070-3169"
      }
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@language": "en",
        "@value": "This ontology supports querying the SAWGraph Knowledge Graph. It adapts and extends concepts from HY_Features, HyFO, and GWML2"
      }
    ],
    "http://purl.org/dc/terms/issued": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#date",
        "@value": "2025-04-21"
      }
    ],
    "http://purl.org/dc/terms/modified": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#date",
        "@value": "2025-08-01"
      }
    ],
    "http://purl.org/dc/terms/publisher": [
      {
        "@id": "https://sawgraph.github.io/"
      }
    ],
    "http://purl.org/dc/terms/title": [
      {
        "@language": "en",
        "@value": "SAWGraph's hydrology (water) ontology - an adaptation and extension of concepts from HY_Features, HyFO, and GWML2"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@language": "en",
        "@value": "SAWGraph's hydrology (water) ontology - an adaptation and extension of concepts from HY_Features, HyFO, and GWML2"
      }
    ],
    "http://www.w3.org/2002/07/owl#versionInfo": [
      {
        "@language": "en",
        "@value": "1.0"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#downstreamWaterBodyTC",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty",
      "http://www.w3.org/2002/07/owl#TransitiveProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "The transitive closure of the nhdplusv2:downstreamWaterBody object property"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b1"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:downstreamWaterBodyTC"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
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    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b1",
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    "http://www.w3.org/2002/07/owl#unionOf": [
      {
        "@list": [
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_HydroFeature"
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          {
            "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeatureRepresentation"
          }
        ]
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_DendriticCatchment",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a catchment which is determined by a single common downstream catchment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
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      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_DendriticCatchment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Catchment"
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    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentDivide",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "One-dimensional (linear) feature that is a hydrology-specific realization of the holistic catchment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_CatchmentDivide"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentRealization"
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    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#SurfaceWaterFeature",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A complete surface water feature including water, container, and void (for example: lake, river, marsh, et al.)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:SurfaceWaterFeature"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeature"
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    ]
  },
  {
    "@id": "http://www.opengis.net/ont/geosparql#Feature",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://www.w3.org/2000/01/rdf-schema#comment": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A discrete spatial phenomenon in a universe of discourse."
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    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#"
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      {
        "@id": "http://www.opengis.net/spec/geosparql/1.0/req/core/feature-class"
      },
      {
        "@id": "http://www.opengis.net/spec/geosparql/1.1/req/core/feature-class"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "geo:Feature"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#SpatialObject"
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    ],
    "http://www.w3.org/2002/07/owl#disjointWith": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#Geometry"
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    ]
  },
  {
    "@id": "http://wbd.spatialai.org/v1/wbd#contributingDrainageBasin",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates a mainstem to the drainage basin (area) it drains"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#MainStem"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "wbd:contributingDrainageBasin"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://wbd.spatialai.org/v1/wbd#DrainageBasin"
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    ],
    "http://www.w3.org/2002/07/owl#inverseOf": [
      {
        "@id": "http://wbd.spatialai.org/v1/wbd#primaryFlowPath"
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    ]
  },
  {
    "@id": "http://qudt.org/schema/qudt/hasUnit",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
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    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
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        "@id": "http://qudt.org/2.1/schema/qudt"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "qudt:hasUnit"
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    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#associatedCatchmentArea",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies the one and only one catchment area that is associated with a particular flowpath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowPath"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:associatedCatchmentArea"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentArea"
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    ]
  },
  {
    "@id": "http://qudt.org/schema/qudt/numericValue",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
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    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://qudt.org/2.1/schema/qudt"
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    ]
  },
  {
    "@id": "http://purl.org/dc/terms/created",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
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  },
  {
    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b27",
    "@type": [
      "http://www.w3.org/2002/07/owl#AllDisjointClasses"
    ],
    "http://www.w3.org/2002/07/owl#members": [
      {
        "@list": [
          {
            "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeature"
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          {
            "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeatureRepresentation"
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        ]
      }
    ]
  },
  {
    "@id": "http://qudt.org/schema/qudt/quantityValue",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
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    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://qudt.org/2.1/schema/qudt"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "qudt:quantityValue"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://qudt.org/schema/qudt/QuantityValue"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_FlowPath",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "realizes a catchment specifically as a path connecting the inflow and outflow of the catchment it realizes"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_FlowPath"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentRealization"
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    ]
  },
  {
    "@id": "http://purl.org/dc/elements/1.1/source",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#containsFlowLine",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Connects a flowline catchment with its flowline(s)"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLineCatchment"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:containsFlowLine"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine"
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    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#GW_HydrogeoUnit",
    "@type": [
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    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Any soil or rock unit or zone that by virtue of its hydraulic properties has a distinct influence on the storage or movement of groundwater (after ANS, 1980)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
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        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:GW_HydrogeoUnit"
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    ]
  },
  {
    "@id": "http://www.w3.org/2004/02/skos/core#prefLabel",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://purl.org/dc/terms/title",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Estuary",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a body of surface water, participating in a hydrographic network, made special due to branching and its interaction with the open sea"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_Estuary"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody"
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    ]
  },
  {
    "@id": "http://purl.org/dc/terms/contributor",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#hasCOMID",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates an NHDPlusV2 feature to its COMID"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b4"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:hasCOMID"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
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        "@id": "http://www.w3.org/2001/XMLSchema#string"
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    ]
  },
  {
    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b4",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
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    "http://www.w3.org/2002/07/owl#unionOf": [
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        "@list": [
          {
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          {
            "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine"
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        ]
      }
    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#GW_MonitoringSite",
    "@type": [
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    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Site of observation related to groundwater"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:GW_MonitoringSite"
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    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#divergence",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Indicates if a nhdplusv2:FlowLine is the main-path or a minor-path of a divergence (no triple if no divergence)"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:divergence"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.w3.org/2001/XMLSchema#string"
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    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#gwMonitoringHost",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies the feature hosting the site [GW_MonitoringSite], e.g., a well, spring, lake or stream"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_MonitoringSite"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:gwMonitoringHost"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeature"
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    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Lagoon",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a body of surface water, participating in a hydrographic network, which is special due to its shallow depth and interaction with the open sea"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_Lagoon"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody"
      }
    ]
  },
  {
    "@id": "http://www.w3.org/2004/02/skos/core#description",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeature",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A complete water feature including water, container, and void; includes surface and subsurface water features"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:WaterFeature"
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    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#Feature"
      }
    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#gwAquiferSystemPart",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates an aquifer system with its parts, which can be other systems, aquifers or confining beds"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:gwAquiferSystemPart"
      }
    ],
    "http://www.w3.org/2002/07/owl#inverseOf": [
      {
        "@id": "http://gwml2.org/def/gwml2#gwAquiferSystem"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentArea",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Two-dimensional (areal) hydrology-specific realization of the holistic catchment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_CatchmentArea"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentRealization"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#downstreamFlowPath",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies another flowpath immediately downstream, allowing network navigation without knowing an inflow or outflow of the catchment realized by the flowpath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:downstreamFlowPath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subPropertyOf": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#downstreamFlowPathTC"
      },
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/downstreamWaterBody"
      }
    ],
    "http://www.w3.org/2002/07/owl#inverseOf": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#upstreamFlowPath"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLineCatchment",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "The catchment polygon for a nhdplusv2:FlowLine"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:FlowLineCatchment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_DendriticCatchment"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#hasLevelPathId",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "The level path id of a flowline is the hydrologic sequence number of the most downstream flowline feature in the level path and is used to connect flowlines to their corresponding main stem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:hasLevelPathId"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.w3.org/2001/XMLSchema#string"
      }
    ]
  },
  {
    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b15",
    "@type": [
      "http://www.w3.org/2002/07/owl#AllDisjointClasses"
    ],
    "http://www.w3.org/2002/07/owl#members": [
      {
        "@list": [
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentArea"
          },
          {
            "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentDivide"
          }
        ]
      }
    ]
  },
  {
    "@id": "http://purl.org/spatialai/spatial/spatial-full#spatiallyRelatedTo",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@value": "topological connection (spatial contact) (sawgraph)"
      }
    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#GW_AquiferSystem",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A body of permeable and poorly permeable material that functions regionally as a water-yielding unit; it comprises two or more permeable beds separated at least locally by confining beds that impede groundwater movement but do not greatly affect the regional hydraulic continuity of the system; includes both saturated and unsaturated parts of permeable material (after ASCE, 1987)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:GW_AquiferSystem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_AquiferUnit"
      }
    ]
  },
  {
    "@id": "http://www.w3.org/2004/02/skos/core#example",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#hasFCODE",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates an NHDPlusV2 feature to its FCODE (see also nhdplusv2:hasFTYPE)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b4"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:hasFCODE"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.w3.org/2001/XMLSchema#string"
      }
    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#GW_Well",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A shaft or hole sunk, dug or drilled into the Earth to observe, extract or inject water (after IGH1397)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:GW_Well"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#SubsurfaceWaterFeature"
      }
    ],
    "http://www.w3.org/2002/07/owl#equivalentClass": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterWell"
      }
    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#gwAquiferSystem",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates an aquifer system part, which can be another system, aquifer or confining bed, with its aquifer system"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_Aquifer"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:gwAquiferSystem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_AquiferSystem"
      }
    ]
  },
  {
    "@id": "http://wbd.spatialai.org/v1/wbd#DrainageBasin",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A HUC12 watershed (drainage area) from the WBD"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "wbd:DrainageBasin"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_DendriticCatchment"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_River",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a body of surface water, participating in a hydrographic network, which is special due to its property to permanently or temporarily flow"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_River"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/upstreamWaterBody",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies another waterbody immediately upstream, allowing network navigation without knowing an inflow or outflow of the catchment realized by the waterbody"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:upstreamWaterBody"
      }
    ],
    "http://www.w3.org/2002/07/owl#inverseOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/downstreamWaterBody"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowPath",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "any non-atomic/non-elementary kind of HY_FlowPath comprised of a contiguous set of atomic/elementary flowpaths"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:FlowPath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_FlowPath"
      }
    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeatureRepresentation",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A representation of a water feature (for example, a line or polygon)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:WaterFeatureRepresentation"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#Geometry"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#partOfWaterBody",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Connects an elementary flowpath to a waterbody it lies within"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:partOfWaterBody"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#hasSlope",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "The numeric average slope of a flowline"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:hasSlope"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.w3.org/2001/XMLSchema#decimal"
      }
    ]
  },
  {
    "@id": "http://wbd.spatialai.org/v1/wbd#containingHUC",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates a flowline catchment to any WBD drainage basin it lies within"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLineCatchment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "wbd:containingHUC"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://wbd.spatialai.org/v1/wbd#DrainageBasin"
      }
    ]
  },
  {
    "@id": "http://www.w3.org/2004/02/skos/core#editorialNote",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://www.opengis.net/ont/geosparql#defaultGeometry",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://www.w3.org/2000/01/rdf-schema#comment": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "The default Geometry to be used in spatial calculations. It is usually the most detailed Geometry."
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#Feature"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#"
      },
      {
        "@id": "http://www.opengis.net/spec/geosparql/1.1/req/geometry-extension/feature-properties"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "geo:defaultGeometry"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#Geometry"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subPropertyOf": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#hasGeometry"
      }
    ]
  },
  {
    "@id": "http://purl.org/dc/terms/issued",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#tapsAquifer",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies the aquifer a well taps"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:tapsAquifer"
      }
    ]
  },
  {
    "@id": "http://qudt.org/schema/qudt/QuantityKind",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://qudt.org/2.1/schema/qudt"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "qudt:QuantityKind"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#hasFTYPE",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates an NHDPlusV2 feature to its FTYPE (see also nhdplusv2:hasFCODE)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b4"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:hasFTYPE"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.w3.org/2001/XMLSchema#string"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Canal",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a body of surface water, participating in a hydrographic network, that is special due to its artificial origin (man-made)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_Canal"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody"
      }
    ]
  },
  {
    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b21",
    "@type": [
      "http://www.w3.org/2002/07/owl#AllDisjointClasses"
    ],
    "http://www.w3.org/2002/07/owl#members": [
      {
        "@list": [
          {
            "@id": "http://hyfo.spatialai.org/v1/hyfo#AquiferWaterFeature"
          },
          {
            "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterWell"
          }
        ]
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Catchment",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "captures the union of catchment and hydro nexus, and the multiple realizations of the holistic catchment concept"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_Catchment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_HydroFeature"
      }
    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#GW_Aquifer",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A body of earth material that contains / potentially contains / potentially contained sufficient saturated permeable material to yield significant quantities of water to wells and springs (after Lohman, 1972)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:GW_Aquifer"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_AquiferUnit"
      }
    ]
  },
  {
    "@id": "http://www.opengis.net/ont/geosparql#SpatialObject",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://www.w3.org/2000/01/rdf-schema#comment": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Anything spatial (being or having a shape, position or an extent)."
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#"
      },
      {
        "@id": "http://www.opengis.net/spec/geosparql/1.0/req/core/spatial-object-class"
      },
      {
        "@id": "http://www.opengis.net/spec/geosparql/1.1/req/core/spatial-object-class"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "geo:SpatialObject"
      }
    ]
  },
  {
    "@id": "https://schema.org/name",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#MainStem",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a named river or similar feature, represented from head to outlet (a composition of elemenatry flowpaths (flowlines) per hydrologic fabric logic model)"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:MainStem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowPath"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "any atomic/elementary kind of HY_FlowPath within a given framework/context (for example, a single NHDFlowline instance)"
      },
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "area of associated catchment may be zero (per hydrologic fabric logic model)"
      },
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "can be part of at most one mainstem"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:FlowLine"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowPath"
      },
      {
        "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b7"
      }
    ]
  },
  {
    "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b7",
    "@type": [
      "http://www.w3.org/2002/07/owl#Restriction"
    ],
    "http://www.w3.org/2002/07/owl#maxQualifiedCardinality": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#nonNegativeInteger",
        "@value": "1"
      }
    ],
    "http://www.w3.org/2002/07/owl#onClass": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#MainStem"
      }
    ],
    "http://www.w3.org/2002/07/owl#onProperty": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#partOfFlowPath"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/realizedCatchment",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies the one and only one catchment that is realized by a particular feature"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_CatchmentRealization"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:realizedCatchment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Catchment"
      }
    ]
  },
  {
    "@id": "http://gwml2.org/def/gwml2#GW_AquiferUnit",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Denotes aquifer-related hydrogeological units: aquifer systems, aquifers, or confining beds"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/19-013/19-013.html"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "gwml2:GW_AquiferUnit"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://gwml2.org/def/gwml2#GW_HydrogeoUnit"
      },
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#AquiferWaterFeature"
      }
    ]
  },
  {
    "@id": "http://purl.org/dc/terms/modified",
    "@type": [
      "http://www.w3.org/2002/07/owl#AnnotationProperty"
    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#HydroRockBody",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a hybrid physical object, such as aquifer, well, or lake, that consists partly of a rock body (a container), empty spaces therein (voids), and a water body inside the space"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://www.tandfonline.com/doi/pdf/10.1080/13658816.2018.1443751"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:HydroRockBody"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#SubsurfaceWaterFeature"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#hasFlowPathLength",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates any flowpath to its length, represented as, for example, a qudt:Quantity object"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:hasFlowPathLength"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://qudt.org/schema/qudt/Quantity"
      }
    ]
  },
  {
    "@id": "http://www.opengis.net/ont/geosparql#hasGeometry",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://www.w3.org/2000/01/rdf-schema#comment": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "A spatial representation for a given Feature."
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#Feature"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#"
      },
      {
        "@id": "http://www.opengis.net/spec/geosparql/1.0/req/geometry-extension/feature-properties"
      },
      {
        "@id": "http://www.opengis.net/spec/geosparql/1.1/req/geometry-extension/feature-properties"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "geo:hasGeometry"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.opengis.net/ont/geosparql#Geometry"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#hasReachCode",
    "@type": [
      "http://www.w3.org/2002/07/owl#DatatypeProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates an NHDPlusV2 feature to its ReachCode"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "_:nf82dfca1a7124b8f8af725bcd77715b0b4"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:hasReachCode"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://www.w3.org/2001/XMLSchema#string"
      }
    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#isRepresentedByWFR",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Relates a water feature to a representation of that water feature"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeature"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:isRepresentedByWFR"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#WaterFeatureRepresentation"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#partOfFlowPath",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Connects an elementary flowpath (e.g., NHDFlowline) to any non-elementary flowpath it is a part of"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowLine"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:partOfFlowPath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowPath"
      }
    ]
  },
  {
    "@id": "http://hyfo.spatialai.org/v1/hyfo#AquiferWaterFeature",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "An aquifer water feature including water, container, and void"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyfo:AquiferWaterFeature"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://hyfo.spatialai.org/v1/hyfo#SubsurfaceWaterFeature"
      }
    ]
  },
  {
    "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_Impoundment",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "a body of surface water, participating in a hydrographic network, seen as being special due to being formed by collecting water, for example in the case of a dam"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#isDefinedBy": [
      {
        "@id": "https://docs.ogc.org/is/14-111r6/14-111r6.html"
      },
      {
        "@id": "https://github.com/opengeospatial/HY_Features/tree/master/ontology"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "hyf:HY_Impoundment"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/HY_WaterBody"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#upstreamFlowPath",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "Identifies another flowpath immediately upstream, allowing network navigation without knowing an inflow or outflow of the catchment realized by the flowpath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:upstreamFlowPath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subPropertyOf": [
      {
        "@id": "https://www.opengis.net/def/schema/hy_features/hyf/upstreamWaterBody"
      }
    ],
    "http://www.w3.org/2002/07/owl#inverseOf": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#downstreamFlowPath"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#downstreamFlowPathTC",
    "@type": [
      "http://www.w3.org/2002/07/owl#ObjectProperty",
      "http://www.w3.org/2002/07/owl#TransitiveProperty"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "The transitive closure of the nhdplusv2:downstreamFlowPath object property"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#domain": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowPath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:downstreamFlowPathTC"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#range": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowPath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subPropertyOf": [
      {
        "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#downstreamWaterBodyTC"
      }
    ]
  },
  {
    "@id": "http://nhdplusv2.spatialai.org/v1/nhdplusv2#FlowPathLength",
    "@type": [
      "http://www.w3.org/2002/07/owl#Class"
    ],
    "http://purl.org/dc/terms/description": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "The length of a flowpath"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#label": [
      {
        "@type": "http://www.w3.org/2001/XMLSchema#string",
        "@value": "nhdplusv2:FlowPathLength"
      }
    ],
    "http://www.w3.org/2000/01/rdf-schema#subClassOf": [
      {
        "@id": "http://qudt.org/schema/qudt/Quantity"
      }
    ]
  }
]