Silver Lake Dam is one of the 15 dams that control the waterpower of Harrisville. It is located at the southern end of Silver Lake, a 346-acre water body that spans the towns of Harrisville and Nelson. 

Silver Lake, 346 acres, is located in the towns of Harrisville and Nelson. Water from Silver Lake flows via Minnewawa Brook to the Ashuelot River, a tributary of the Connecticut River.