National Dam Inspection program. Stevens Lake Dam (NDS-ID Number-PA-894, DER-ID-Number-66-55), Susquehana River Basin, Mud Pond Outlet, Wyoming County, Pennsylvania. Phase I Inspection Report

摘要

Stevens Lake Dam is an earthfill dam, 99 feet long and 9 feet high. The crest width of the dam is 12 feet. The upstream slope is 3H:1V and protected with handplaced riprap. The downstream slope is 2.5H:1V and is grass covered. The spillway is located at the center of the embankment and consists of a concrete structure with a modified sharp crested weir. The spillway is equipped with wooden stop logs located along the right spillway wingwall. The 5 feet long wooden stop logs are used to regulate the level of the reservoir pool below the spillway weir elevation. The length of the weir is 52 feet long. The inspection and review of data of Stevens Lake Dam did not reveal any problems which require emergency action. The dam appears to be in good condition and adequately maintained. The spillway and reservior are capable of controlling approximately 53% of the PMF. Based on criteria established by the Corps of Engineers, the spillway is termed inadequate.