[1] Vermilion Trail (County 4) serves as a main route in the township.

The unincorporated community of Markham is located within Colvin Township.

The Paleface River flows through the southwest and south–central parts of Colvin Township.

The Water Hen River flows through the west–central and north–central portions of the township.

The South Branch of the Water Hen River flows through the central and northeast portions of the township.