 According to the United States Census Bureau, the township has a total area of , of which is land and , or 3.11%, is water.The St. Joseph River enters the township from the southeast, bends north by the city of Buchanan, and then flows mostly north through the eastern portion of the township.The Fernwood Botanical Garden and Nature Preserve is located on the eastern bank of the St. Joseph River in the northeast corner of the township and is open year round.