{
  "@context": {
    "@vocab": "https://schema.org/"
  },
  "@type": "Dataset",
  "comment": "This dataset metadata was generated with the use of AI and reviewed by an expert. If you see any mistakes please file an issue on GitHub at https://github.com/earthcube/communityCollections/issues.",
  "@id": "https://www.hydrosheds.org/#dataset",
  "name": "HydroSHEDS (Hydrological data and maps based on Shuttle Elevation Derivatives at multiple Scales)",
  "url": "https://www.hydrosheds.org/",
  "description": "HydroSHEDS provides freely available global hydrographic and hydrological baseline data layers derived primarily from spaceborne elevation data (notably SRTM) and related processing. The HydroSHEDS product suite supports hydro-ecological research and applications worldwide and includes gridded core layers (e.g., void-filled DEM, hydrologically conditioned DEM, flow direction, flow accumulation, flow length, land mask/sinks) as well as derived hydrographic products such as catchment and sub-basin boundaries, river networks, and lakes. Products are available at multiple resolutions and scales (e.g., 3 arc-second, 15 arc-second, 30 arc-second and coarser) and are distributed in standard GIS formats for regional and global analysis.",
  "keywords": [
    "HydroSHEDS",
    "hydrography",
    "hydrology",
    "watersheds",
    "catchments",
    "drainage basins",
    "river networks",
    "stream network",
    "flow direction",
    "flow accumulation",
    "flow length",
    "hydrologically conditioned DEM",
    "SRTM",
    "digital elevation model",
    "freshwater",
    "GIS",
    "GeoTIFF",
    "shapefile"
  ],
  "creator": [
    {
      "@type": "Organization",
      "name": "World Wildlife Fund (WWF)",
      "url": "https://www.worldwildlife.org/"
    }
  ],
  "provider": [
    {
      "@type": "Organization",
      "name": "HydroSHEDS Project",
      "url": "https://www.hydrosheds.org/"
    }
  ],
  "publisher": [
    {
      "@type": "Organization",
      "name": "World Wildlife Fund (WWF)",
      "url": "https://www.worldwildlife.org/"
    }
  ],
  "isAccessibleForFree": true,
  "variableMeasured": [
    {
      "@type": "PropertyValue",
      "name": "Catchment and Sub-Basin Boundaries",
      "description": "Vector catchment and sub-basin boundary products derived from HydroSHEDS hydrography.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    },
    {
      "@type": "PropertyValue",
      "name": "River networks",
      "description": "Vector river/stream network products derived from HydroSHEDS hydrography.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    },
    {
      "@type": "PropertyValue",
      "name": "Lakes and water bodies",
      "description": "Lake and water body products distributed as part of the HydroSHEDS product suite.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    },
    {
      "@type": "PropertyValue",
      "name": "Void-filled DEM",
      "description": "Digital elevation model underpinning HydroSHEDS core layers.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    },
    {
      "@type": "PropertyValue",
      "name": "Conditioned DEM",
      "description": "Hydrologically conditioned DEM used to derive flow products.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    },
    {
      "@type": "PropertyValue",
      "name": "Flow direction",
      "description": "Drainage direction grid derived from the conditioned DEM.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    },
    {
      "@type": "PropertyValue",
      "name": "Flow accumulation",
      "description": "Upstream contributing area / upstream cell count derived from flow direction.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    },
    {
      "@type": "PropertyValue",
      "name": "Flow length",
      "description": "Upstream and/or downstream flow length derived from flow direction.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    },
    {
      "@type": "PropertyValue",
      "name": "Land mask and sinks",
      "description": "Land/ocean mask and coastal/inland sink indicators used in HydroSHEDS processing.",
      "temporalCoverage": "Static",
      "spatialCoverage": {
        "@type": "Place",
        "name": "Global and regional hydrographic products; product-specific coverage varies"
      },
      "temporalResolution": "Static",
      "spatialResolution": [
        "3 arc-second",
        "15 arc-second",
        "30 arc-second"
      ]
    }
  ],
  "encodingFormat": [
    "image/tiff",
    "application/geotiff",
    "application/zip",
    "application/x-esri-shapefile",
    "application/vnd.esri.filegdb"
  ],
  "license": "https://data.hydrosheds.org/file/technical-documentation/HydroSHEDS_TechDoc_v1_4.pdf",
  "distribution": [
    {
      "@type": "DataDownload",
      "name": "HydroSHEDS website (overview)",
      "description": "HydroSHEDS main website with product overview and navigation to downloads.",
      "contentUrl": "https://www.hydrosheds.org/",
      "encodingFormat": [
        "text/html"
      ]
    },
    {
      "@type": "DataDownload",
      "name": "HydroSHEDS core data downloads (GeoTIFF)",
      "description": "Download page for HydroSHEDS core raster layers (e.g., DEM, conditioned DEM, flow direction, flow accumulation, flow length, land mask) in multiple resolutions, provided as GeoTIFF tiles and regional/global bundles.",
      "contentUrl": "https://www.hydrosheds.org/hydrosheds-core-downloads",
      "encodingFormat": [
        "text/html"
      ]
    },
    {
      "@type": "DataDownload",
      "name": "HydroSHEDS products index",
      "description": "Products landing page providing access to HydroSHEDS datasets (core layers and derived hydrographic products).",
      "contentUrl": "https://www.hydrosheds.org/products",
      "encodingFormat": [
        "text/html"
      ]
    },
    {
      "@type": "DataDownload",
      "name": "HydroSHEDS technical documentation and license agreement",
      "description": "Technical documentation for HydroSHEDS v1 including the HydroSHEDS v1 license agreement (Appendix A).",
      "contentUrl": "https://data.hydrosheds.org/file/technical-documentation/HydroSHEDS_TechDoc_v1_4.pdf",
      "encodingFormat": [
        "application/pdf"
      ]
    }
  ],
  "measurementTechnique": [
    "Hydrographic derivation from digital elevation models (primarily SRTM) including hydrologic conditioning and flow routing",
    "Derivation of flow direction, flow accumulation, and related hydrological grids from conditioned elevation data",
    "Generation of hydrographic features (basins/catchments, river networks, lakes) from processed hydrographic foundations"
  ],
  "citation": [
    {
      "@type": "ScholarlyArticle",
      "name": "New global hydrography derived from spaceborne elevation data",
      "author": [
        {
          "@type": "Person",
          "name": "B. Lehner"
        },
        {
          "@type": "Person",
          "name": "K. Verdin"
        },
        {
          "@type": "Person",
          "name": "A. Jarvis"
        }
      ],
      "isPartOf": {
        "@type": "Periodical",
        "name": "Eos, Transactions, American Geophysical Union"
      },
      "datePublished": "2008",
      "identifier": [
        {
          "@type": "PropertyValue",
          "propertyID": "doi",
          "value": "10.1029/2008EO100001"
        }
      ],
      "sameAs": "https://doi.org/10.1029/2008EO100001"
    }
  ],
  "about": [
    {
      "@type": "Thing",
      "name": "Hydrology"
    },
    {
      "@type": "Thing",
      "name": "Hydrography"
    },
    {
      "@type": "Thing",
      "name": "Watersheds"
    },
    {
      "@type": "Thing",
      "name": "River networks"
    },
    {
      "@type": "Thing",
      "name": "Catchments"
    },
    {
      "@type": "Thing",
      "name": "Digital elevation models"
    },
    {
      "@type": "Thing",
      "name": "Freshwater conservation"
    }
  ],
  "sameAs": [
    "https://www.worldwildlife.org/our-work/science/hydrosheds/"
  ]
}