The Dam is a 300-foot-long earth embankment with a maximum height of 15 feet that was reportedly constructed in the 1920s. The Dam impounds an 83-acre lake that receives runoff from approximately 2,380 acres. The dam is reportedly owned by the Truesdale Lake Property Owners Association, and the Town has possibly been granted a right of way for the road over the dam. The Dam is registered, # 231-5160, with New York Department of Environmental Conservation (NYDEC). Figure 1 shows the lake and its watershed.