St. Joseph River (Maumee River)

St. Joseph River in Fort Wayne, Indiana

St. Joseph River in the catchment area of ​​the Maumee River

In confluence with the St. Marys River to form the Maumee River in Fort Wayne, part of the river system of the St. Lawrence River. The catchment area including the two source rivers and numerous tributaries covers 2808 km ² ( 694,000 acres) and covers a total of eight counties. The St. Joseph River is in the northern Williams County by the confluence of the West Branch and East Branch St. Joseph River formed. It then flows generally in direction southsouthwest by Williams and Defiance counties in Ohio, as well as by the DeKalb County and Allen in Indiana, until the junction of the St. Marys River in the city Fort Wayne.

The catchment area is predominantly used for agricultural purposes. Approximately 64 % are arable land, 15 % is pasture, 10 % is forest or wetlands and the remaining 11% are urbanized or otherwise used. The topography of the area varies from hilly areas in the north and the center of the river and almost flat terrain in the south. The St. Joseph River follows the Fort Wayne moraine and has washed out countless low cliffs and terraces.