Calamus Creek is a minor tributary of the Beaver Dam River, about 23.7 miles (38.1 km) long,[1] in southeastern Wisconsin in the United States.

[2] Calamus Creek rises in west central Dodge County near the intersection of Mt.

Pleasant and Van Buren roads and follows a highly winding, generally easterly course through Dodge County.

The relatively small watershed, contained mostly within the town of Calamus, is entirely rural with no cities or villages.

The Wisconsin DNR labels the land type as the Beaver Dam drumlins, a land formation marked by till plains and terminal moraines created during the Wisconsin Ice Age: "the characteristic landform pattern is rolling till plain with drumlins and scattered muck deposits.