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Federal
EnviroAtlas - 2011 Agricultural Land Cover on Steep Slopes for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage land area that is classified as agricultural land cover that occurs on slopes above a given threshold for each... -
Federal
EnviroAtlas - 2016 Percent Tree Canopy Cover by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area within each 12-digit hydrologic unit code (HUC) in the conterminous United States (CONUS) that is... -
Federal
EnviroAtlas - National Inventory of Dams for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset is a summary of the National Dams Inventory data from 2009 survey. The file contains counts of inventoried dams by 12-digit hydrologic units... -
Federal
EJ and Impervious Cover NGDA
U.S. Environmental Protection Agency —
Geographic analysis of impervious cover and demographic attributes by 2010 Census block group. Demographic attributes and Census block groups were downloaded from the... -
Federal
EnviroAtlas - Agricultural Water Demand by 12-Digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
The national agricultural water demand metric provides insight into the amount of water used for agricultural irrigation in the contiguous United States. The... -
Federal
EnviroAtlas - Percent Urban Land Cover by 12-Digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset estimates the percent urban land for each 12-digit hydrologic unit code (HUC) in the conterminous United States. For the purposes of this... -
Federal
EnviroAtlas - Big Game Hunting Recreation Demand by 12-Digit HUC in the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset includes the total number of recreational days per year demanded by people ages 18 and over for big game hunting by location in the... -
Federal
EnviroAtlas - Biological nitrogen fixation in natural/semi-natural ecosystems by 12-digit HUC for the Conterminous United States, 2006
U.S. Environmental Protection Agency —
This EnviroAtlas dataset contains data on the mean biological nitrogen fixation in natural/semi-natural ecosystems per 12-digit Hydrologic Unit (HUC) in 2006.... -
Federal
EnviroAtlas - Domestic Water Demand by 12-Digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset includes domestic water demand attributes which provide insight into the amount of water currently used for indoor and outdoor residential... -
Federal
EnviroAtlas - NHDPlus V2 Hydrologic Unit Boundaries Web Service - Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas web service contains layers depicting hydrologic unit boundary layers and labels for the Subregion level (4-digit HUCs), Subbasin level (8-digit... -
Federal
EnviroAtlas - 2016 Percent Tree Canopy Cover by 12-digit HUC for Hawaii
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area within each 12-digit hydrologic unit code (HUC) in Hawaii that is classified as tree canopy using the... -
Federal
EnviroAtlas - 2019 Percent Impervious Cover by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area within each 12-digit hydrologic unit code (HUC) in the conterminous United State that is impervious to... -
Federal
EnviroAtlas - 2019 Land Cover Proportions by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area that is classified as natural, forest, wetland, agricultural, and developed land cover using the 2019... -
Federal
EnviroAtlas - 2012 Land Cover by 12-digit HUC for US Virgin Islands
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area that is classified as natural, forest, wetland, agricultural, natural, and developed land cover using... -
Federal
EnviroAtlas - Bird Watching Recreation Demand by 12-Digit HUC in the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset includes the total number of recreational days per year demanded by people ages 18 and over for bird watching by location in the contiguous... -
Federal
EnviroAtlas - Migratory Bird Hunting Recreation Demand by 12-Digit HUC in the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset includes the total number of recreational days per year demanded by people ages 18 and over for migratory bird hunting by location in the... -
Federal
EnviroAtlas - 2016 Land Cover Proportions by 12-digit HUC for Alaska
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area that is classified as natural, forest, wetland, agricultural, natural, and developed land cover as... -
Federal
EnviroAtlas - 2011 Land Cover by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area that is classified as natural, forest, wetland, agricultural, natural, and developed land cover using... -
Federal
EnviroAtlas - Percent Large, Medium, and Small Natural Areas for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset contains the percentage of small, medium, and large natural areas for each Watershed Boundary Dataset (WBD) 12-Digit Hydrologic Unit Code... -
Federal
EnviroAtlas - 2011 Land Cover, Impervious Surface, and Riparian Land Cover Proportions by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents land cover across a watershed and in riparian areas for each 12-digit hydrologic unit code (HUC) in the conterminous United States...