Portage River and Toussaint River Watersheds
The Portage River and Toussaint River watersheds are located in northwestern Ohio. They drain a total of 766 square miles and flow through all or part of six counties. Major municipalities partially or fully in the watersheds include Bowling Green, Fostoria, Port Clinton and Marblehead.
The watersheds are predominantly comprised of cultivated crops with pockets of urban development. There is an area of wetlands along Lake Erie.
Back to the TMDL page.