National Dam Safety Program. Treated Water Pond (NDI Number PA 01138, PennDER Number 63-91), Ohio River Basin, Sawmill Creek, Washington County, Pennsylvania. Phase I Inspection Report.
ACKENHEIL AND ASSOCIATES INC PITTSBURGH PA
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The general condition of the Treated Water Pond is considered to be fair. This assessment is based primarily on visual observations of embankment conditions and lack of information on the structural capacity of conduits through the embankment. The structure is classified as an intermediate size, high hazard dam. Corps of Engineers guidelines recommend the Probable Maximum Flood PMF as the Spillway Design Flood for an intermediate size, high hazard dam. The Treated Water Ponds Spillway Design Flood is the Probable Maximum Flood. Spillway capacity is adequate because the non-overtopping flood discharge was found, by using the HEC-1 computer program, to be in excess of 100 percent of the PMF. The visual inspection indicates several minor deficiencies in addition to those requiring further investigation. The deficiencies can be corrected or improved through implementation of the following recommended evaluation, remedial, monitoring andor maintenance efforts.
- Civil Engineering