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This map shows one set of watershed boundaries in the continental United States; these are known as National hydrologic units (watersheds). Find out more: Watersheds and drainage basins; Lakes; Freshwater and the water cycle; Runoff and the water cycle
This United States Geological Survey web map displays the National Watershed Boundary Dataset. Web Map by esri_basemaps
Click on the map to launch the application. The WATERS GeoViewer tool is an EPA GeoPlatform based web mapping application that provides access to. spatial data sets stored in WATERS, such as NHDPlus, EPA and Non-EPA Linked Data. Watershed level reports containing both NHDPlus and StreamCat information.
Locate Your Watershed Mapping Interface for Science in Your Watershed of the U.S. Geological Survey
This map shows one set of watershed boundaries in the continental United States; these are known as National hydrologic units (watersheds). The word "watershed" is sometimes used interchangeably with drainage basin or catchment.
A map of watersheds separated by the principal hydrological divides of North America. Watersheds of North America are large drainage basins which drain to separate oceans, seas, gulfs, or endorheic basins.
The search tool allows the user to find sites by street address, location name, site number, state/territory, and watershed region. The sites are sorted into five main categories: Surface water, including lakes, streams and rivers; Groundwater, including wells; Springs; Atmospheric; Other, which includes land sites