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National Dam Inspection Program. Penelec Retention Dam. (NDI I.D. Number PA-00809, PennDer I.D, Number 32-78) Ohio River Basin, Tributary to the Conemaugh River, Indiana County, Pennsylvania. Phase I Inspection Report,
Bernard M Mihalcin
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Abstract
Based on a visual inspection, operational history, and available engineering data, the dam is considered to be in good condition. The size classification of the facility is small and its hazard classification is considered to be high. In accordance with the recommended guidelines, the Spillway Design Flood (SDF) for the facility ranges between the 1/2 PMF (Probable Maximum Flood) and the PMF. Due to the high potential for damage to downstream structures and loss of life, the SDF for the facility is considered to be the PMF. Results of the hydrologic and hydraulic analysis indicate the facility will pass and/or store a flood of PMF magnitude. Consequently, the spillway is considered adequate.