The gatehouse at Colebrook Dam, Riverton, Conn., which is located on the Farmington River, and is a part of a network of flood control dams on tributaries of the Connecticut River. Completed in 1969 at a cost of $14.3 million, the amount of water stored at Colebrook River Lake can fluctuate substantially. The pool, used for both water supply and fishery habitat, normally covers an area of about 750 acres. Colebrook River Lake can store up to 16.56 billion gallons of water for flood risk management purposes.