National Dam Inspection Program. Mill Creek Dam (NDS PA-00548/DER 40-2), Susquehanna River Basin, Mill Creek, Luzerne County, Pennsylvania. Phase I Inspection Report.
GANNETT FLEMING CORDDRY AND CARPENTER INC HARRISBURG PA
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Based on the visual inspection, available records, calculations and past operational performance, Mill Creek Dam is judged to be in good condition. However, the spillway main and auxiliary will not pass the Probable Maximum Flood PMF without overtopping the dam. Therefore, based on criteria established for these studies by the Department of the Army, Office of the Chief of Engineers OCE, the spillway capacity is rated as inadequate. The spillway will pass one-half the PMF without overtopping the dam. Therefore, based on the OCE criteria established for these studies, the spillway capacity is not rated as seriously inadequate. The existing spillway can accommodate a flood with a peak inflow of 67 percent of the PMF peak flow. The spillway capacity is controlled by the elevation of a low area on the top of dam near the spillway. If the top of the dam were brought up to the design elevation, the spillway would accommodate a flood with a peak inflow of 118 percent of the PMF peak inflow. The spillway would then be rated as adequate. Author
- Civil Engineering