I thought I would add this so you could see how many square miles (8316 sq. miles) are drained into the Maumee River Basin! It would include the spillway water from the east end of GLSM but that water would also contain some of the water from the Ohio River Watershed. With the present rainy condition I wonder just how much water is actually released into the St. Marys River, Then on to Lake Erie.

http://www.glc.org/raptest/maumee.html