EPA Region Boundaries with Exclusive Economic Zone (EPA Regions)

Full Metadata This web service contains EPA region boundaries and EPA regions extended to the 200nm exclusive economic zone (EEZ). This dataset was produced by EPA's Office of Environmental Information (OEI). Access and use constraints: These data are available for public access and use and carry no restrictions.

Full Metadata Boundaries used for EnviroAtlas as reference boundary data (State, County, Census Tracts, and Census Block Groups).

Full Metadata Boundaries used for EnviroAtlas as reference boundary data (State, County, Census Tracts, and Census Block Groups).

Full Metadata Boundaries used for EnviroAtlas as reference boundary data (State, County, Census Tracts, and Census Block Groups).

This map service contains GIS data for the Watershed Boundary Dataset (WBD) distributed with NHDPlus v2.1 (HUC2, HUC4, HUC6, HUC8, HUC10 and HUC12). The data has been simplified to increase display performance. The information supporting this service resides in the Reach Address Database (RAD) which is part of the Watershed Assessment, Tracking & Environmental Results System (WATERS).For complete metadata, please use refer to the full NHDPlus documentation at: http://www.horizon-systems.com/nhdplus/NHDPlusV2_home.php.

Full Metadata Boundaries used for EnviroAtlas as reference boundary data (State, County, Census Tracts, and Census Block Groups).