What's a Watershed?

Watershed: An area of land where all the water from rain or snow collects (into streams and rivers) and flows to a lake, ocean, or reservoir. 


Lake Erie

In the River Raisin Watershed, water collects in the River Raisin and flows into Lake Erie.

Facts about the River Raisin Watershed

- The entire watershed is about 1,072 square miles, roughly the size of the state of Rhode Island. 

- The River Raisin is approximately 150 miles long. 

- As of 2010, the watershed was home to 178,577 people. 

- The watershed contains parts of five Michigan Counties: Lenawee, Monroe, Washtenaw, Jackson, Hillsdale, and a portion of Fulton County Ohio. 

- The watershed contains around 429 lakes and ponds. 

- The watershed contains 3,000 miles of man-made drainage systems. 

- It contains 22 mainstream dams and 38 tributary dams. 

- It is said to be the world's "crookedest river." 

- River Raisin Watershed land uses in 2010: 
   Agriculture - 65% 
   Urbanized Areas - 11% 
   Wetlands - 8% 
   Forested - 7% 
   Grassland - 7%

Michigan Water Facts - MSU