The water levels of Belmont Lake are regulated by the Crowe Valley Conservation Authority. A drawdown occurs in the fall. It is part of the Great Lakes Basin, and is a right tributary of the Crowe River. The river begins at Imp Lake in geographic Methuen Township and flows south, past the Blue Mountain Mine at Devil’s Lake, to Kasshabog Lake.
It continues South to Long Lake, then turns East, then resumes a Southward direction, and enters geographic Belmont Township. The river passes through Round Lake, turns East, and reaches its mouth at Belmont Lake on the Crowe River, which flows via the Trent River to Lake Ontario.
Boat Launch is located at: 377 Mile of Memories Road. The surface area is approximately 757.5715 hectors (1872 acres) max depth is approximately 15.5m (51 feet) and average depth is approximately 6m (20 feet).