{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Michael E. Wieczorek", "hasEmail": "mailto:mewieczo@usgs.gov"}, "description": "This data set represents the mean percentage of tree canopy from the Canopy Layer of the \nNational Land Cover Dataset 2001,  (LaMotte and Wieczorek, 2010), compiled for every \ncatchment of NHDPlus for the conterminous United States. The source data set represents \ntree canopy percentage for the conterminous United States for 2001. The Canopy Layer of \nthe National Land Cover Data Set for 2001 was produced through a cooperative project \nconducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. The MRLC \nConsortium is a partnership of Federal agencies (http://www.mrlc.gov), consisting of the \nU.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration \n(NOAA), the U.S. Environmental Protection Agency (USEPA), the U.S. Department of \nAgriculture (USDA), the U.S. Forest Service (USFS), the National Park Service (NPS), \nthe U.S. Fish and Wildlife Service (USFWS), the Bureau of Land Management (BLM), \nand the USDA Natural Resources Conservation Service (NRCS).\n\t\t\nThe NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets \nthat incorporates many of the best features of the National Hydrography Dataset (NHD) \nand the National Elevation Dataset (NED). The NHDPlus includes a stream network \n(based on the 1:100,00-scale NHD), improved networking, naming, and value-added \nattributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) \nproduced using a drainage enforcement technique first widely used in New England, and \nthus referred to as \"the New England Method.\" This technique involves \"burning in\" the \n1:100,000-scale NHD and when available building \"walls\" using the National Watershed \nBoundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is \nused to produce hydrologic derivatives that agree with the NHD and WBD. Over the past \ntwo years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the \nU.S. Environmental Protection Agency (USEPA), and contractors, found that this method \nproduces the best quality NHD catchments using an automated process (USEPA, 2007). \nThe NHDPlus dataset is organized by 18 Production Units that cover the conterminous \nUnited States.\n\t\t\nThe NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's  Major River \nBasins (MRBs, Crawford and others, 2006).  MRB1, covering the New England and \nMid-Atlantic River basins, contains NHDPlus Production Units 1 and 2.  MRB2, covering \nthe South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production \nUnits 3 and 6.  MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy \nRiver basins, contains NHDPlus Production Units 4, 5, 7 and 9.  MRB4, covering the \nMissouri River basins, contains NHDPlus Production Units 10-lower and 10-upper.  MRB5, \ncovering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains \nNHDPlus Production Units 8, 11 and 12.  MRB6, covering the Rio Grande, Colorado and \nGreat Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16.  MRB7, \ncovering the Pacific Northwest River basins, contains NHDPlus Production Unit 17.  MRB8, \ncovering California River basins, contains NHDPlus Production Unit 18.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9SE7067", "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.afec6afe-7fe0-4946-81aa-f6bb290f2bdb.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_afec6afe-7fe0-4946-81aa-f6bb290f2bdb", "keyword": ["CALI", "COGB", "California", "Catchment", "Conterminous United States", "GLMR", "Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy", "Inlandwaters", "LMTG", "Lower Mississippi, Arkansas-White-Red, and Texas-Gulf", "MORI", "MRB", "MRB1", "MRB2", "MRB3", "MRB4", "MRB5", "MRB6", "MRB7", "MRB8", "Major River Basin", "Missouri", "NAWQA", "NEMA", "NHDPlus", "New England and Mid-Atlantic", "PANW", "Pacific Northwest", "Rio Grande, Colorado, and Great Basin", "SAGT", "SPARROW", "South Atlantic-Gulf and Tennessee", "Tree canopy", "USGS:afec6afe-7fe0-4946-81aa-f6bb290f2bdb", "environment", "geoscientificInformation", "inlandWaters"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-127.910792, 23.243486, -65.327751, 51.657387", "theme": ["geospatial"], "title": "Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: NLCD 2001 Tree Canopy"}