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#1 Federal
EnviroAtlas - Percent Urban Land Cover by 12-Digit HUC for the Conterminous United States
- Organization: U.S. Environmental Protection Agency
- Dataset Last Updated: January 01, 2012 at 12:00 AM
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 map, urban land cover includes a...
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Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: May 06, 2026 at 12:15 AM
#2 Federal
EnviroAtlas - 2002 Edge-of-Field Simulated Nitrogen, Phosphorus and Water Quantity Loss by 12-digit HUC for the Conterminous United States
- Organization: U.S. Environmental Protection Agency
- Dataset Last Updated: August 19, 2016 at 12:00 AM
This EnviroAtlas dataset contains annual (2002) simulated estimations of edge-of-field agricultural nitrogen (N) and phosphorus (P) lost in surface runoff, subsurface flow (tile and non-tile) and...
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Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: May 06, 2026 at 12:11 AM

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