Watershed 101

Mississippi River Basins’ (Figure 1.a)

What is a Watershed?

A watershed is the area of land where all of the water that is under it or drains off of it goes into the same place. John Wesley Powell, scientist geographer, put it best when he said that a watershed is: “that area of land, a bounded hydrologic system, within which all living things are inextricably linked by their common water course and where, as humans settled, simple logic demanded that they become part of a community.” (Source: EPA, 2011)

To find out what watershed you live in visit http://cfpub.epa.gov/surf/locate/index.cfm

A watershed is the area of land where all of the water that is under it or drains off of it goes into the same place.

Missouri is part of the largest watershed in the United States, the Mississippi River Basin (Figure 1.a). The Missouri River is the largest watershed in the Mississippi River Basin. The Sac River Watershed lies in the Missouri River Basin just above the Arkansas-Red-White River Basin. The Sac River Watershed is number 34 on the Missouri Watershed Map (Figure 1.b). Click on the map to learn more about the Sac River Watershed.