Chatsworth is a township municipality in Grey County, in southwestern Ontario, Canada. The township is located at the headwaters of the Styx River, the Saugeen River, the Sauble River, the Bighead River, the Spey River, and the old Sydenham River.

The Saugeen River is located in southern Ontario, Canada. The river begins in the Osprey Wetland Conservation Lands and flows generally north-west about 160 kilometres (99 mi) before exiting into Lake Huron. The river is navigable for some distance, and was once an important barge route. Today the river is best known for its fishing and as a canoe route.