Watershed Maps Land cover, elevation and historic maps.
Stresses Learn about some of the stresses affecting the river.
An interesting look at the rich history of the Mackinaw River Basin. The Mackinaw was once a different river flowing through a very different landscape. This serpentine jewel transversed a Grand Prarie sea of tall grasses and flowering forbs. The prairie stretched as far as the eye could see, and savannas and woodlands flanked the stream. A few groves grew along glacial moraines, where they gained some protection from prairie fires.