Upper Cathance River begins at Bradley Pond in Topsham, flows through a marsh and then to farmland and wooded areas to U.S. Route 201. The full river continues through Bowdoinham and through the Cathance River Preserve, where it widens and ultimately enters Merrymeeting Bay.
One of many Maine canoe trips, this one begins and ends on U.S. Route 201, just north of Topsham village. The narrow waterway is home to beaver lodges, swallows making homes in the sandy banks, cows grazing in nearby fields, among other pleasant views. No access to the river is available at Bradley Pond, though hiking and cross country ski trails are accessible at the Bradley Pond Farm Preserve.