National Dam Safety Program. West Leechburg Reservoir Dam (NDI-PA.-452), Ohio River Basin, West Penn Run, Westmoreland County, Pennsylvania.
GAI CONSULTANTS INC MONROEVILLE PA
Pagination or Media Count:
West Leechburg Reservoir Dam is an earth embankment approximately 406 feet long reaching a maximum height of about 60 feet near the center of the embankment. The structure is provided with a cutoff trench, excavated to rock, as well as a concrete cutoff wall extending two feet into rock and extending five feet above the rock surface. The visual inspection, records of past performance, and hydologic and hydraulic analysis indicate that the facility is in fair condition and in need of remedial repair and further engineering evaluation. Hydrologic and hydraulic calculations indicate that the facility is capable of passing andor storing 43 of the runoff associated with a storm of PMF intensity without overtopping the spillway wingwalls. Based on screening criteria estabished by the Dept. of the Army, Office of Chief of Engineers, the spillway, in its present configuration, is considered seriously inadequate. Seepage flow was observed in the lower portion of the embankment behind the treatment plant.
- Civil Engineering