{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Water Mission Area", "hasEmail": "mailto:GS-W-model-data@usgs.gov"}, "description": "The Geographic Information Retrieval and Analysis System (GIRAS)\nwas developed in the mid 70s to put into digital form a number\nof data layers which were of interest to the USGS. One of these\ndata layers was the Hydrologic Units. The map is based on the\nHydrologic Unit Maps published by the U.S. Geological Survey\nOffice of Water Data Coordination, together with the list\ndescriptions and name of region, subregion, accounting units, and\ncataloging unit. The hydrologic units are encoded with an eight-\ndigit number that indicates the hydrologic region (first two digits),\nhydrologic subregion (second two digits), accounting unit (third two\ndigits), and cataloging unit (fourth two digits).\n\t\t\nThe data produced by GIRAS was originally collected at a scale of\n1:250K.  Some areas, notably major cities in the west, were\nrecompiled at a scale of 1:100K. In order to join the data together\nand use the data in a geographic information system (GIS) the data\nwere processed in the ARC/INFO GUS software package.  Within the\nGIS, the data were edgematched and the neatline boundaries between\nmaps were removed to create a single data set for the conterminous\nUnited States.\n\t\t\nNOTE: A version of this data theme that is more throughly\nchecked (though based on smaller-scale maps) is available here:\nhttps://water.usgs.gov/lookup/getspatial?huc2m\n\t\t\nHUC, GIRAS, Hydrologic Units, 1:250\n\t\t\nFor the most current data and information relating to \nhydrologic unit codes (HUCs) please see \nhttp://water.usgs.gov/GIS/huc.html. The Watershed \nBoundary Dataset (WBD) is the most current data\navailable for watershed delineation. See \nhttp://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9LRKZVU", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.9c6a0008-865b-478f-ba1e-ab574481e7fe.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_9c6a0008-865b-478f-ba1e-ab574481e7fe", "keyword": ["USGS:9c6a0008-865b-478f-ba1e-ab574481e7fe", "environment", "geoscientificInformation", "hydrologic unit", "inlandWaters", "watersheds"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-127.90613546, 22.8757219, -65.32190735, 48.28250713", "theme": ["geospatial"], "title": "1:250,000-scale Hydrologic Units of the United States"}