Delineation of Watersheds

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10.67 MB
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GIS Level:
  • Intermediate
Geographic Scale:
  • Any-All
Target Audience:
  • Higher Ed
United States

Watershed boundaries are increasingly being used in land and water management, separating the direction of water flow such that all water within one watershed flows toward the same outlet point. Thus, a pollution source at the head of one watershed will not affect adjoining ones, but it will affect every location downstream within its own watershed. Delineating watershed boundaries helps managers monitor the amount and quality of water entering a point of interest, such as a stream, lake, or estuary.

Keywords: environmental studies; hydrology; watershed delineation; Digital Elevation Model; raster data import; project; clip; mosaic; raster processing; Spatial Analyst Extension; flow direction; filling sinks; water accumulation; source raster; stream links; data mash-up, SpatiaLABS

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