National Dam Inspection Program. Montour Number 4 Refuse Bank (NDI number PA 00865, PENN DER Number 63-92), Ohio River Basin, Tributary to Chartiers Creek, Washington County, Pennsylvania. Phase I Inspection Report
ACKENHEIL AND ASSOCIATES GEO SYSTEMS INC PITTSBURGH PA
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Based on a review of available information, visual observations of conditions as they existed on the date of the field inspection, and supporting engineering calculations, the general condition of the Montour No. 4 Refuse Bank is considered to be fair. This assessment is based primarily on visual observations of the embankment. The structure is classified as a large size, significant hazard dam. Corps of Engineers guidelines recommend the Probable Maximum Flood PMF as the Spillway Design Flood for a large size significant hazard dam. Montour No. 4 Refuse Banks Spillway Design Flood is the Probable Maximum Flood. Reservoir capacity is adequate because the non-overtopping flood inflow was found, by using the HEC-1 computer program, to be in excess of 100 percent of the PMF.
- Hydrology, Limnology and Potamology
- Civil Engineering