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Watershed Boundary Dataset Subregions Map for the United States, created by the US Geological Survey. This list is non-exhaustive, as many organizations and territories have produced their own watershed map data and have published via the web. Notable datasets include: United States Watershed Boundary Dataset, [35] website (continually updated)
The pieces include units that drain to segments of streams, remnant areas, noncontributing areas, and coastal or frontal units that can include multiple watersheds draining to an ocean or large lake. Hence, half or more of the hydrologic units are not watersheds as the name of the framework Watershed Boundary Dataset (WBD) implies.
Includes river networks, watershed boundaries, drainage directions, and flow accumulations. USGS Land Cover Institute: Set of links from the USGS for numerous land cover datasets. Although primarily US data, further down the list there is data for other continents. Atlas of the Biosphere: Mapping the Biosphere
Watershed Boundary Dataset. USDA, NRCS, National Cartography and Geospatial Center}: External link in |work= [permanent dead link ] Champlin Peak Quadrangle - Utah (Map). 1 : 24,000. 7,5 Minute Series (Topographic). United States Geological Survey. 2001. "HYDRO1k Basins data" (Shapefile with TAR compression).
The NHD is part of the United States Geological Survey The National Map for the United States. The NHD is also linked with similar datasets representing the surface water for Canada and Mexico. The dataset primarily maps features a 1:24,000-scale, but in certain areas provides detail at 1:5,000-scale.
Most lakes are not actually endorheic, but endorheic basins may not have standing water, or have water only seasonally. The most significant endorheic basins are these: Great Basin covering most of Nevada, the western part of Utah, and smaller amounts of other U.S. states; Great Divide Basin on the Continental Divide in Wyoming; Guzmán Basin
The Boundary Waters is the largest wilderness area east of the Rocky Mountains. It spans more than 1 million acres along the U.S.-Canada border and is filled with forests, glacial lakes and streams.
GIS revolutionized curation, manipulation, and input for complex computational hydrologic models [2] [3] For surface water modeling, digital elevation model are often layered with hydrographic data in order to determine the boundaries of a watershed. [4] Understanding these boundaries is integral to understanding where precipitation runoff will ...