National Dam Inspection Program. Jennings Pond Dam (NDI I.D. PA-0891 DER I.D. 066-012) Susquehanna River Basin, Little Mehoopany Creek, Wyoming County, Pennsylvania. Phase I Inspection Report,
D'APPOLONIA CONSULTING ENGINEERS INC PITTSBURGH PA
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Based on the evaluation of the existing conditions, the condition of Jennings Pond Dam is considered to be fair. The dam is a dry masonry structure backed by an earth fill on the upstream side. Although the conditions observed are not significantly affecting the overall performance of the dam at this time, the apparent downstream creeping of the dam suggests that the continued stability of the dam is questionable. Further, due to the lack of erosion protection at the abutment and downstream of the nonoverflow sections, significant overtopping of the nonoverflow sections may result in major damage to the dam. Further evaluation of these concerns by a professional engineer is recommended. The flood discharge capacity of the dam was evaluated according to the recommended procedure and was found to pass approximately 10 percent of the Probable Maximum Flood PMF without overtopping the nonoverflow sections of the dam. This capacity is less than the recommended spillway design flood of 50 percent of the PMF. Therefore, the spillway capacity is classified to be inadequate.
- Hydrology, Limnology and Potamology
- Civil Engineering