National Dam Inspection Program. Lake Quinn Dam (NDI ID Number PA-00145 DER ID Number 64-43) Delaware River Basin, Tributary of Middle Creek, Wayne County, Pennsylvania. Phase I Inspection Report.
CORPS OF ENGINEERS BALTIMORE MD BALTIMORE DISTRICT
Pagination or Media Count:
The visual inspection and review of available design and construction information indicate that Lake Quinn Dam is in fair condition. Deficiencies noted during the inspection included the lack of functional drawdown facilities and minor seepage through the masonry near the right abutment. Based on the size and hazard classification of the dam, the recommended Spillway Design Flood SDF varies between 12 the Probable Maximum Flood PMF and the PMF. The 12 PMF has been selected as the SDF due to the size of the dam and reservoir, and the downstream conditions. The hydrologic and hydraulic computations indicate that the combination of reservoir storage and spillway discharge capacity will pass only 3 percent of the PMF without overtopping the dam. Overtopping the dam could cause failure, which would lead to a significant increase in downstream loss of life and property damage. Therefore, the spillway for Lake Quinn Dam is considered to be seriously inadequate, and the dam is judged to be unsafe, non-emergency.
- Hydrology, Limnology and Potamology
- Civil Engineering