National Program for Inspection of Non-Federal Dams. Egypt Reservoir Dam (MA 01063), Housatonic River Basin, Dalton, Massachusetts. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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Egypt Reservoir Dam is an earth embankment dam approximately 370 feet long, with a maximum hydraulic height of 34 feet. There is a 28-foot wide concrete chute spillway at the easterly abutment. The visual inspection indicates that the dam is in poor condition. The concrete spillway works are deteriorated and require major reconstruction. The downstream slope of the embankment shows evidence of instability and requires attention. Because the dam has a small size and high hazard potential classification, the test flood selected is the 12 Probable Maximum Flood 12 PMF. The test flood inflow for Egypt Reservoir, having a drainage area of 0.85 square miles, was estimated to be 1050 cfs. Effects of reservoir storage would not significantly reduce the test flood. This flow would cause the dam to overtop by about 12 foot. Spillway capacity at the low point in the top of the dam is 510 cfs which is 49 of the test flood outflow.
- Hydrology, Limnology and Potamology
- Civil Engineering