Eaton Brook Reservoir is a small Y-shaped water body located in Madison County near the Hamlet of West Eaton. It is one of the numerous area reservoirs that was built to supply water to the Erie canal. Boat launch access is on Eaton Brook Road (County Route 52), 2 miles east of the hamlet of West Eaton. Concrete ramp. Parking for 13 cars and trailers. Physical Features: Elevation: 1400 feet Area: 272 acres Shoreline Length: 4.9 miles Length: 1.65 miles Maximum Depth: 50 feet Towns: Nelson, Eaton ry.