 William Harp, Charles Harp, Calvin Paine, Isaac M'Cuddy, David Beebe, Isaac Strain and Joshua Jackson all served in the Mexican War and William Garrison Wright served in the Black Hawk War.According to the 2010 census, the township has a total area of , of which (or 89.75%) is land and (or 10.25%) is water.This township includes part of Clinton Lake and Clinton Nuclear Generating Station.