National Dam Inspection Program. Little Shenango Dam (NDI ID Number PA-00246, PennDER Number 43-54), Ohio River Basin, Calvin Clark Run, Mercer County, Pennsylvania. Phase I Inspection Report.
BAKER (MICHAEL) JR INC BEAVER PA
Pagination or Media Count:
Little Shenango Dam PA 490 is a homogeneous earth floodwater retarding dam designed by the U.S. Department of Agriculture, Soil Conservation Service. The dam has a crest length of 430 feet, a maximum height of 45 feet, a storage volume of 472 acre-feet at spillway crest level, and a storage volume of 19 acre-feet at normal pool level. The dam was found to be in generally poor condition at the time of inspection. The inspection did disclose potential problems with seepage and piping in the dam embankment and abutments. A detailed engineering investigation of seepage, piping, erosion, and structural stability of the dam should be initiated as expeditiously as possible. Hydraulichydrologic evaluations revealed that the spillway will pass the Probable Maximum Flood PMF without overtopping the dam. The spillway is therefore considered adequate.
- Civil Engineering