@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/78356107-d60b-4ffd-b279-a99d2ea2ded6> a dcat:Dataset ;
    dct:description """The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive
            set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes,
            ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as
            point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification
            and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other
            information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and
            transported material flow allows users to trace movement in upstream and downstream directions. In addition to this geographic
            information, the dataset contains metadata that supports the exchange of future updates and improvements to the data. The NHD
            supports many applications, such as making maps, geocoding observations, flow modeling, data maintenance, and stewardship. For
            additional information on NHD, go to https://www.usgs.gov/core-science-systems/ngp/national-hydrography.""" ;
    dct:identifier "USGS:ecd2ad5e-faa2-4291-bcdb-441b7113ea41" ;
    dct:issued "2025-11-22T19:39:41.818954"^^xsd:dateTime ;
    dct:modified "20201113"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-179.0000 10.0000, -179.0000 72.0000, -64.0000 72.0000, -64.0000 10.0000, -179.0000 10.0000))"^^gsp:wktLiteral ] ;
    dct:title "National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "U.S. Geological Survey, National Geospatial Technical Operations Center" ;
            vcard:hasEmail <mailto:tnm_help@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/78356107-d60b-4ffd-b279-a99d2ea2ded6/resource/f54e7be5-e7f1-4c0b-b03c-cf425b04c2ce> ;
    dcat:keyword "administrative-watershed-units",
        "amerigeo",
        "amerigeoss",
        "area-of-complex-channels",
        "area-to-be-submerged",
        "artificial-path",
        "basin",
        "bay-inlet",
        "boundaries",
        "boundary",
        "bridge",
        "canal-ditch",
        "ckan",
        "coastline",
        "connector",
        "dam-weir",
        "dams",
        "drainage-areas-for-surface-water",
        "drainage-systems-and-characteristics",
        "estuary",
        "flow-direction-network",
        "flume",
        "foreshore",
        "gaging-station",
        "gate",
        "geo",
        "geoss",
        "hazard-zone",
        "hu10",
        "hu12",
        "hu14",
        "hu16",
        "hu2",
        "hu4",
        "hu6",
        "hu8",
        "huc",
        "hydrographic",
        "hydrography",
        "hydrologic-unit-code",
        "hydrologic-units",
        "ice-mass",
        "inlandwaters",
        "inundation-area",
        "lakes",
        "levee",
        "line",
        "lock-chamber",
        "marsh",
        "national",
        "national-geospatial-data-asset",
        "ngda",
        "nonearthen-shore",
        "north-america",
        "orthoimage",
        "playa",
        "point",
        "pointevent",
        "pond",
        "rapids",
        "reach",
        "reach-code",
        "reef",
        "region",
        "reservoir",
        "rivers",
        "rock",
        "sea-ocean",
        "sink-rise",
        "sounding-datum-line",
        "special-use-zone",
        "special-use-zone-limit",
        "spillway",
        "stream",
        "stream-river",
        "submerged-stream",
        "surface-water-systems",
        "swamp",
        "topographic",
        "tunnel",
        "underground-conduit",
        "united-states",
        "us",
        "usgs-ecd2ad5e-faa2-4291-bcdb-441b7113ea41",
        "wall",
        "wash",
        "water-inland-theme",
        "water-intake-outflow",
        "waterfall",
        "watershed",
        "watershed-boundaries",
        "watershed-boundary-dataset",
        "wbd",
        "well" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/78356107-d60b-4ffd-b279-a99d2ea2ded6/resource/f54e7be5-e7f1-4c0b-b03c-cf425b04c2ce> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-08-05T18:56:10.447928"^^xsd:dateTime ;
    dct:modified "2025-11-22T19:39:41.773097"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.ecd2ad5e-faa2-4291-bcdb-441b7113ea41.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .