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Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin. It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.
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.
Watersheds of North America are large drainage basins which drain to separate oceans, seas, gulfs, or endorheic basins. There are six generally recognized hydrological continental divides which divide the continent into seven principal drainage basins spanning three oceans ( Arctic , Atlantic and Pacific ) and one endorheic basin.
In this portion, the western drainage of the divide flows into the watersheds of the New River and Tennessee River, both tributaries of the Ohio River. The eastern drainage flows into the watersheds of the Roanoke River, Pee Dee River, and Santee River. [5] The divide initially separates the headwaters of the New River from that of the Roanoke ...
The watershed begins at Red Box Saddle in the Angeles National Forest near Mount Wilson in the San Gabriel Mountains. As it enters the urbanized area of the watershed, the Arroyo Seco stream flows between La Cañada Flintridge on the west and Altadena on the east. Just below Devil's Gate Dam, the stream passes underneath the Foothill Freeway
The Fountain Creek Watershed—located in Teller, El Paso, and Pueblo counties—is 930 square miles (2,400 km 2) in area. [6]: 6 [1]: 4 [a] Its borders are Pikes Peak, the Palmer Divide and a minor divide east of Colorado Springs. [1] Monument Creek, which originates on Rampart Range, is the main tributary. Other key tributaries are Sand Creek ...
Together, the river, arroyos and aquifer they supply through infiltration comprise the Santa Fe River watershed. Besides drainage, the arroyos provide a network of pathways for recreation and exercise when they are dry. [ 2 ]
Saginaw Bay is a bay within Lake Huron located on the eastern side of the U.S. state of Michigan. It forms the space between Michigan's Thumb region and the rest of the Lower Peninsula of Michigan. Saginaw Bay is 1,143 square miles (2,960 km 2) in area. [2] It is located in parts of five Michigan counties: Arenac, Bay, Huron, Iosco, and Tuscola.