sentences:  People use the recreational facilities on the river to observe these species for pleasure and knowledge seeking.On the lower reaches of the river, especially in the several impoundments behind the dams, there is significant recreational watercraft usage, both powered and sail, as well as personal water craft, although no provisions for specific clearances under bridges have been made, and the dams do not have locks, so portaging or trailered transport is required to move craft from one reach to another.Totaling over 857 square miles and covering portions of Barry, Eaton, Ionia, and Kent Counties in Central Michigan, the Thornapple River Watershed has approximately 324 miles of streams and rivers that flow into the Lower Grand River Watershed.