National Dam Inspection Program. Beaver Pond Dam (NDI I.D. Number PA-00408, PennDER I.D. Number 52-13) Delaware River Basin, Dingmans Creek, Pike County, Pennsylvania. Phase I Inspection Report,
GAI CONSULTANTS INC MONROEVILLE PA
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Based on a visual inspection, operational history, and hydrologichydraulic analysis, the dam is considered to be in good condition. The size classification of the facility is small and the hazard classification is considered to be high. In accordance with the recommended guidelines, the Spillway Design Flood SDF ranges between the 12 PMF Probable Maximum Flood and the PMF. Since the facility is classified near the lower bounds of the small category, the SDF is considered to be the 12 PMF. Results of hydrologic and hydraulic analyses indicate the facility will pass andor store approximately 40 percent of the PMF prior to embankment overtopping at the low area in the embankment crest elevation 1177.4. Breach analysis indicates that failure under less than 12 PMF conditions could lead to increased downstream damage and potential for loss of life. Thus, based on screening criteria provided by the recommended guidelines, the spillway is considered to be seriously inadequate and the facility unsafe, non-emergency. Recommendations for owner action are listed.
- Hydrology, Limnology and Potamology
- Civil Engineering