National Dam Inspection Program. Quemahoning Dam (NDI ID Number 740), Ohio River Basin, Quemahoning Creek, Somerset County, Pennsylvania. Phase I Inspection Report.
D'APPOLONIA CONSULTING ENGINEERS PITTSBURGH PA
The Quemahoning Dam consists of an earth embankment 955 feet long with a maximum height of 100 feet from the downstream toe. The combined primary and emergency spillway is located on the right abutment looking downstream. Based on the evaluation of the conditions as they existed on the dates of inspection June 8 and 12, 1978, and as revealed by visual observations, the condition of Quemahoning Dam is assessed to be good. It is recommended that the owner periodically monitor and record the piezometers installed in 1961 to measure the pore pressures within the embankment to aid in future evaluation of the performance of the embankment. It is also recommended that appropriate repairs be made to stop concrete spalling on the spillway channel walls. The spillway has the recommended capacity to pass the probable maximum flood. Therefore, the spillway is adequate. It is further recommended that the owner should develop a formal warning system to alert the downstream residents in the event of emergencies.
Original contains color plates: All DDC reproductions will be in black and white.