The Westville Dam's entrance is near the bridge over the Quinebaug river, a river originating in East Brimfield Lake.
The entrance is on Wallace Road in Sturbridge, near the Quinebaug river bridge. It originates from East Brimfield Lake and ponds northwest of Sturbridge, Massachusetts, flows generally southeast and south through Connecticut (Putnam, Danielson, Plainfield, Canterbury and Jewett City), the river joins Aspinook pond which begins in Canterbury and ends in Jewett City. 
