National Dam Inspection Program. Indian Lake Dam (NDI ID Number 228), Ohio River Basin, Calendars Run, Somerset County, Pennsylvania. Phase I Inspection Report.
D'APPOLONIA CONSULTING ENGINEERS INC PITTSBURGH PA
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Based on the evaluation of the conditions as they existed on the dates of inspection May 17 and 30, 1978, as revealed by the visual observations, and the review of available information, the condition of Indian Lake Dam is assessed to require immediate further investigation to determine its structural stability and appropriate measures for controlling seepage through the embankment. Field observations show that wet areas and slope irregularities exist on the downstream face of the dam, which suggests potential instability of the embankment. Various seepages on the left abutment also require further evaluation. The outlet pipe gate, which is the only emergency drawdown facility for the impoundment, is inoperative and should be repaired immmediately. Based on the recommended spillway evaluation procedure, the capacity of the spillway was found to be adequate to pass the recommended flow of probable maximum flood. It is recommended that the owner should develop a formal warning system to alert the downstream residents in the event of emergencies.
- Civil Engineering