{
  "assets": {
    "file_geodatabase-c9798861f486": {
      "file:size": 1080487369,
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/hifld/nhd/flowline/v1.0.0/file_geodatabase/flowline_ak-file_geodatabase.zip",
      "roles": [
        "data"
      ],
      "title": "flowline_ak-file_geodatabase.zip",
      "type": "application/zip"
    },
    "geopackage-fb32c97e1553": {
      "file:checksum": "d50110a505f0820179c29e26f55a908ff96938",
      "file:size": 4979531776,
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/hifld/nhd/flowline/v1.0.0/geopackage/flowline_ak-_3dhp_all_alaska_20250313_gdb__hydro_3dhp_all_flowline.gpkg",
      "roles": [
        "data"
      ],
      "title": "flowline_ak-_3dhp_all_alaska_20250313_gdb__hydro_3dhp_all_flowline.gpkg",
      "type": "application/geopackage+sqlite3"
    },
    "geoparquet-6717c499449f": {
      "file:checksum": "d5011082163dd83e4dcf10c66917cd880eefcd",
      "file:size": 1296757961,
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/hifld/nhd/flowline/v1.0.0/geoparquet/flowline.parquet",
      "roles": [
        "data"
      ],
      "title": "flowline.parquet",
      "type": "application/vnd.apache.parquet"
    },
    "pmtiles-19317eadbb65": {
      "file:checksum": "d501104d532bb6ace6074de498f54cabd02f27",
      "file:size": 709891357,
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/hifld/nhd/flowline/v1.0.0/pmtiles/flowline.pmtiles",
      "roles": [
        "data"
      ],
      "title": "flowline.pmtiles",
      "type": "application/vnd.pmtiles"
    }
  },
  "description": "The USGS 3D Hydrography Program (3DHP) ArcGIS REST service (3DHP_all) from The National Map is the first of several data services that will be delivered by the 3D Hydrography Program. The 3DHP_all comprises a national network of flowlines, hydrolocations, and water bodies, and will include catchments, drainage areas, and flow network derivatives as they are populated in the future. The 3DHP_all service will provide access to a 3D-enabled geospatial hydrography vector dataset built from 3DHP data and intended to provide the most comprehensive but general rendering of 3DHP data. 3DHP data is derived from elevation-derived hydrography (EDH) Elevation-Derived Hydrography Specifications | U.S. Geological Survey (usgs.gov) where available. Where EDH has not been collected, 3DHP data will be supplemented by data from the National Hydrography Dataset (NHD) National Hydrography Dataset | U.S. Geological Survey (usgs.gov). As further EDH data is collected, the EDH data will replace the NHD data in that data collection area. 3DHP data ingested from EDH sources will include catchments, drainage areas derived from catchments, and flowline network attribute derivatives.For additional information on the 3DHP, go to\u00a0https://www.usgs.gov/3dhp.See\u00a0https://apps.nationalmap.gov/help/\u00a0for assistance with The National Map viewer, download client, services, or metadata.",
  "extent": {
    "spatial": {
      "bbox": [
        [
          -180.0,
          -90.0,
          180.0,
          90.0
        ]
      ]
    },
    "temporal": {
      "interval": [
        [
          null,
          null
        ]
      ]
    }
  },
  "hifld:agency": "US Geological Survey",
  "hifld:feature_count": 3268534,
  "hifld:feature_id_column": null,
  "hifld:geometry_column": "geometry",
  "hifld:geometry_type": "MultiLineString Z",
  "hifld:inventory_match_type": null,
  "hifld:manifest_keys": [
    "nhd/metadata/source_manifest.json",
    "nhd/flowline/metadata/source_manifest.json"
  ],
  "hifld:manifest_role": "resolved_version",
  "hifld:metadata_resolved_from": {},
  "hifld:metadata_sources": [],
  "hifld:native_bbox": [
    -2157222.719899893,
    416942.8301000595,
    1491309.4286999702,
    2372905.498000145
  ],
  "hifld:native_crs": "{\"$schema\": \"https://proj.org/schemas/v0.7/projjson.schema.json\", \"base_crs\": {\"coordinate_system\": {\"axis\": [{\"abbreviation\": \"Lat\", \"direction\": \"north\", \"name\": \"Geodetic latitude\", \"unit\": \"degree\"}, {\"abbreviation\": \"Lon\", \"direction\": \"east\", \"name\": \"Geodetic longitude\", \"unit\": \"degree\"}], \"subtype\": \"ellipsoidal\"}, \"datum\": {\"ellipsoid\": {\"inverse_flattening\": 298.257222101, \"name\": \"GRS 1980\", \"semi_major_axis\": 6378137}, \"name\": \"North American Datum 1983\", \"type\": \"GeodeticReferenceFrame\"}, \"id\": {\"authority\": \"EPSG\", \"code\": 4269}, \"name\": \"NAD83\"}, \"conversion\": {\"method\": {\"id\": {\"authority\": \"EPSG\", \"code\": 9822}, \"name\": \"Albers Equal Area\"}, \"name\": \"unnamed\", \"parameters\": [{\"id\": {\"authority\": \"EPSG\", \"code\": 8821}, \"name\": \"Latitude of false origin\", \"unit\": \"degree\", \"value\": 50}, {\"id\": {\"authority\": \"EPSG\", \"code\": 8822}, \"name\": \"Longitude of false origin\", \"unit\": \"degree\", \"value\": -154}, {\"id\": {\"authority\": \"EPSG\", \"code\": 8823}, \"name\": \"Latitude of 1st standard parallel\", \"unit\": \"degree\", \"value\": 55}, {\"id\": {\"authority\": \"EPSG\", \"code\": 8824}, \"name\": \"Latitude of 2nd standard parallel\", \"unit\": \"degree\", \"value\": 65}, {\"id\": {\"authority\": \"EPSG\", \"code\": 8826}, \"name\": \"Easting at false origin\", \"unit\": \"metre\", \"value\": 0}, {\"id\": {\"authority\": \"EPSG\", \"code\": 8827}, \"name\": \"Northing at false origin\", \"unit\": \"metre\", \"value\": 0}]}, \"coordinate_system\": {\"axis\": [{\"abbreviation\": \"\", \"direction\": \"east\", \"name\": \"Easting\", \"unit\": \"metre\"}, {\"abbreviation\": \"\", \"direction\": \"north\", \"name\": \"Northing\", \"unit\": \"metre\"}], \"subtype\": \"Cartesian\"}, \"id\": {\"authority\": \"EPSG\", \"code\": 3338}, \"name\": \"NAD83 / Alaska Albers\", \"type\": \"ProjectedCRS\"}",
  "hifld:office": null,
  "hifld:quality": {
    "columns_hash": "9f736a25e404c1f69ab1e315c2b87d79db32029789c673be08982666259b6dc4",
    "invalid_geometry_count": 0,
    "manifest_href": "metadata/quality_manifest.json",
    "null_geometry_count": 0,
    "passed": true,
    "provenance": "production_metadata_and_parquet_footer_spike",
    "sampled_feature_count": null,
    "sampled_invalid_geometry_count": null,
    "sampled_null_geometry_count": null
  },
  "hifld:source_dates": {
    "issued": "2025-02-27",
    "modified": "2025-04-08",
    "provenance": {
      "issued": "inventory",
      "modified": "inventory"
    }
  },
  "hifld:spatial_extent_status": "unknown_source_bbox",
  "hifld:spatial_status": "spatial",
  "id": "hifld/nhd/flowline/v1.0.0",
  "keywords": [
    "Water Supply",
    "Natural Hazards",
    "Boundaries"
  ],
  "license": "other",
  "links": [
    {
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/releases/1704edb3-322d-469c-91da-92902fe76a2d/catalog.json",
      "rel": "root",
      "type": "application/json"
    },
    {
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/releases/1704edb3-322d-469c-91da-92902fe76a2d/hifld/nhd/flowline/catalog.json",
      "rel": "parent",
      "type": "application/json"
    },
    {
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/releases/1704edb3-322d-469c-91da-92902fe76a2d/hifld/nhd/flowline/v1.0.0/collection.json",
      "rel": "self",
      "type": "application/json"
    },
    {
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/hifld/nhd/flowline/v1.0.0/AGENTS.md",
      "rel": "agents",
      "type": "text/markdown"
    },
    {
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/hifld/nhd/flowline/v1.0.0/README.md",
      "rel": "describedby",
      "type": "text/markdown"
    },
    {
      "href": "https://www.datalumos.org/datalumos/project/240108/version/V1/view",
      "rel": "derived_from"
    },
    {
      "href": "https://storage.googleapis.com/hifld-next-datasets-prod/hifld/nhd/flowline/v1.0.0/pmtiles/flowline.pmtiles",
      "rel": "pmtiles",
      "title": "flowline.pmtiles",
      "type": "application/vnd.pmtiles"
    }
  ],
  "providers": [
    {
      "name": "U.S. Geological Survey",
      "roles": [
        "producer"
      ]
    },
    {
      "name": "HIFLD Next",
      "roles": [
        "host"
      ],
      "url": "https://hifld.publicenvirodata.org"
    }
  ],
  "stac_extensions": [
    "https://schemas.portolan-sdi.org/portolan/v0.2.0/schema.json",
    "https://stac-extensions.github.io/file/v2.1.0/schema.json",
    "https://stac-extensions.github.io/version/v1.2.0/schema.json",
    "https://stac-extensions.github.io/table/v1.2.0/schema.json",
    "https://stac-extensions.github.io/web-map-links/v1.3.0/schema.json"
  ],
  "stac_version": "1.1.0",
  "table:columns": [
    {
      "is_geometry": true,
      "name": "geometry",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "type": "geometry"
    },
    {
      "exampleValues": [
        "6B30U",
        "E5KS0",
        "DUKJO",
        "92IK2",
        "C2LYY"
      ],
      "is_geometry": false,
      "length": 6,
      "name": "id3dhp",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "type": "string"
    },
    {
      "exampleValues": [
        "2023-09-14T00:00:00+00:00",
        "2023-09-14T00:00:00+00:00",
        "2023-09-14T00:00:00+00:00",
        "2023-09-14T00:00:00+00:00",
        "2023-09-14T00:00:00+00:00"
      ],
      "is_geometry": false,
      "length": 25,
      "name": "featuredate",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "possibleValues": [
        "2023-09-14T00:00:00+00:00",
        "2024-03-04T21:14:00+00:00"
      ],
      "type": "string"
    },
    {
      "exampleValues": [
        "https://geoconnex.us/usgs/mainstems/9497244",
        "https://geoconnex.us/usgs/mainstems/6687351",
        "https://geoconnex.us/usgs/mainstems/3635779",
        "https://geoconnex.us/usgs/mainstems/6675149",
        "https://geoconnex.us/usgs/mainstems/3323782"
      ],
      "is_geometry": false,
      "length": 44,
      "name": "mainstemid",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "type": "string"
    },
    {
      "exampleValues": [
        "1416406.0",
        "1398336.0",
        "1407625.0",
        "1406572.0",
        "1402053.0"
      ],
      "is_geometry": false,
      "max": "1894360.0",
      "min": "1397793.0",
      "name": "gnisid",
      "null_count": 4533,
      "nullable": true,
      "numNullValues": 4533,
      "type": "float"
    },
    {
      "exampleValues": [
        "Susitna River",
        "Anvik River",
        "Oshetna River",
        "Moose Creek",
        "Finland Creek"
      ],
      "is_geometry": false,
      "length": 28,
      "name": "gnisidlabel",
      "null_count": 4533,
      "nullable": true,
      "numNullValues": 4533,
      "type": "string"
    },
    {
      "exampleValues": [
        "1",
        "1",
        "5",
        "1",
        "1"
      ],
      "is_geometry": false,
      "max": "7.0",
      "min": "1.0",
      "name": "featuretype",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "type": "integer"
    },
    {
      "exampleValues": [
        "Channel Line",
        "Channel Line",
        "Waterbody Connector",
        "Channel Line",
        "Channel Line"
      ],
      "is_geometry": false,
      "length": 26,
      "name": "featuretypelabel",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "possibleValues": [
        "Channel Line",
        "Drainageway",
        "Hydro Unenforced Connector",
        "Surface Connector",
        "Waterbody Connector"
      ],
      "type": "string"
    },
    {
      "exampleValues": [
        "0.07745110000000001",
        "0.6297693000000001",
        "0.05389434",
        "0.262",
        "1.43136802"
      ],
      "is_geometry": false,
      "max": "12.821",
      "min": "0.00233835",
      "name": "lengthkm",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "type": "float"
    },
    {
      "exampleValues": [
        "OEUL8",
        "OJ4M1",
        "OGR98",
        "OG6QQ",
        "MDUD1"
      ],
      "is_geometry": false,
      "length": 6,
      "name": "waterbodyid3dhp",
      "null_count": 4000,
      "nullable": true,
      "numNullValues": 4000,
      "type": "string"
    },
    {
      "exampleValues": [
        "1",
        "1",
        "1",
        "1",
        "1"
      ],
      "is_geometry": false,
      "max": "1.0",
      "min": "0.0",
      "name": "flowdirection",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "type": "integer"
    },
    {
      "exampleValues": [
        "Flow direction is in digitized direction, and z-values on vertices flow downslope",
        "Flow direction is in digitized direction, and z-values on vertices flow downslope",
        "Flow direction is in digitized direction, and z-values on vertices flow downslope",
        "Flow direction is in digitized direction, and z-values on vertices flow downslope",
        "Flow direction is in digitized direction, and z-values on vertices flow downslope"
      ],
      "is_geometry": false,
      "length": 81,
      "name": "flowdirectionlabel",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "possibleValues": [
        "Flow direction is in digitized direction, and z-values on vertices flow downslope",
        "Flow direction is unable to be determined from elevation surface"
      ],
      "type": "string"
    },
    {
      "exampleValues": [
        "1",
        "1",
        "1",
        "1",
        "1"
      ],
      "is_geometry": false,
      "max": "1.0",
      "min": "1.0",
      "name": "onsurface",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "type": "integer"
    },
    {
      "exampleValues": [
        "Feature is on the land surface",
        "Feature is on the land surface",
        "Feature is on the land surface",
        "Feature is on the land surface",
        "Feature is on the land surface"
      ],
      "is_geometry": false,
      "length": 72,
      "name": "onsurfacelabel",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "possibleValues": [
        "Feature is above another hydrography feature, elevated above the surface",
        "Feature is on the land surface"
      ],
      "type": "string"
    },
    {
      "exampleValues": [
        " ",
        " ",
        " ",
        " ",
        " "
      ],
      "is_geometry": false,
      "length": 1,
      "name": "catchmentid3dhp",
      "null_count": 4985,
      "nullable": true,
      "numNullValues": 4985,
      "possibleValues": [
        " "
      ],
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "flowpathid3dhp",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "streamlevel",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "exampleValues": [
        "0.0",
        "0.0",
        "0.0",
        "1.0",
        "0.0"
      ],
      "is_geometry": false,
      "max": "1.0",
      "min": "0.0",
      "name": "startflag",
      "null_count": 4985,
      "nullable": true,
      "numNullValues": 4985,
      "type": "float"
    },
    {
      "exampleValues": [
        "0.0",
        "0.0",
        "0.0",
        "0.0",
        "0.0"
      ],
      "is_geometry": false,
      "max": "0.0",
      "min": "0.0",
      "name": "terminalflag",
      "null_count": 4985,
      "nullable": true,
      "numNullValues": 4985,
      "type": "float"
    },
    {
      "is_geometry": false,
      "name": "streamorder",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "streamcalculator",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "hydrosequence",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "dnhydrosequence",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "uphydrosequence",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "dnlevelpath",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "uplevelpath",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "pathlength",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "arbolatesum",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "divergence",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "exampleValues": [
        "Main path through divergence",
        "Main path through divergence",
        "Main path through divergence",
        "Main path through divergence",
        "Main path through divergence"
      ],
      "is_geometry": false,
      "length": 28,
      "name": "divergencelabel",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "possibleValues": [
        "Main path through divergence",
        "No divergence"
      ],
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "rtrndivergence",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "levelpath",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "is_geometry": false,
      "name": "terminalpath",
      "null_count": 5000,
      "nullable": true,
      "numNullValues": 5000,
      "type": "string"
    },
    {
      "exampleValues": [
        "NHD",
        "NHD",
        "NHD",
        "NHD",
        "NHD"
      ],
      "is_geometry": false,
      "length": 8,
      "name": "workunitid",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "possibleValues": [
        "19050401",
        "NHD"
      ],
      "type": "string"
    },
    {
      "exampleValues": [
        "77.45108519042755",
        "629.7692227520939",
        "53.89431225600141",
        "261.74535068995584",
        "1431.368029298651"
      ],
      "is_geometry": false,
      "max": "12821.195549787944",
      "min": "2.338382490958563",
      "name": "shape_Length",
      "null_count": 0,
      "nullable": false,
      "numNullValues": 0,
      "type": "float"
    }
  ],
  "title": "Flowline",
  "type": "Collection"
}