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What determines the boundaries of a watershed?

A.
man-made boundaries like drainage ditches and reservoirs
B.
elevation features like hills, mountains, and ridges
C.
placement of cities and urban sprawl
D.
average annual rainfall in the areav

1 Answer

12 votes

Answer:

B. Elevation features like hills, mountains, and ridges

Step-by-step explanation:

A watershed is all of the land and water areas that drain toward a particular lake or river segment. Thus, a watershed (or drainage basin) is defined in terms of each selected lake or river, such as "Mississippi river watershed". Watersheds can be identified on different scales. Large scale watersheds are composed of smaller areas called sub watersheds. For example, the Mississippi river has an extremely large watershed, encompassing most of the central United States, including all or part of 31 states. In contrast, Lake Itasca in north central Minnesota has a relatively small watershed. As the source of the Mississippi river, Lake Itasca's drainage basin is considered a sub watershed of the entire Mississippi River basin. The Minnesota Department of Natural Resources uses the following terminology to identify watersheds on different scales: regions, subregions, basins, subbasins, watersheds and sub watersheds.

Hope this helps! :)

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