Greenfield Township is drained by West Branch French Creek and its tributaries, Townley Run and Darrow Brook and by Lake Erie tributaries including Twelvemile Creek, Eightmile Creek, and Sixmile Creek.
Greenfield Township is drained by West Branch French Creek and its tributaries, Townley Run and Darrow Brook and by Lake Erie tributaries including Twelvemile Creek, Eightmile Creek and Sixmile Creek