Housatonic River Basin, Shelton, Connecticut. Means Brook Reservoir Dam (CT 00092). National Dam Inspection Program. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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The dam at Means Brook Reservoir is concrete, 527 feet long, 50 feet high at the center of the dam from the top of the crest wall to the toe of the downstream embankment, has a 100 foot long spillway, has a top width of 10 feet, and a 2.1 high foot wall along the top. It was originally built in 1917 with subsequent spillway and top of dam modifications in 1977. The Bridgeport Hydraulic Company presently owns and operates the dam including its waterworks facilities. Based on the visual inspectionand past operational performance, the dam is judged to be in fair condition. Significant spalling of the concrete and efflorescence was noted on the downstream face of the dam, and the edges of the top of the damare chipped revealing reinforcement in places. This dam is classified as intermediate in size and a high hazard potential structure in accordance with recommended guidelines established by the Corps of Engineers. The impoundment storage at the top of the dam is 373 ac.-ft. and the maximum height of the dam is 50 feet. Failure of the dam would result in the loss of more than a few lines and excessive damage to 25-30 residential homes. The test flood for this dam is the Probable Maximum Flood PMF. The test flood has an inflow equal to 7800 cfs and an outflow discharge of 7800 cfs, with stillwater elevation of 351.5 which will overtop the dam by 1.4 feet. The maximum outflow capacity of the spillway is 4000 cfs which is 51 percent of the test flood.
- Hydrology, Limnology and Potamology
- Civil Engineering