At full capacity it holds 7.2 billion gallons (2.7 million m3).[1] It is 681.5 acres (2.7 km2) in area, two miles (3.2 km) long, reaches a mean depth of 32 feet (9.8 m) and drains a 24-square mile (62.4 km2) area[2] in North Salem and Lewisboro. The Titicus River, which feeds the east end of the reservoir, begins more than five miles away in Ridgefield, Connecticut; it drains much of northern Ridgefield and Ridgebury, Connecticut.