National Program for Inspection of Non-Federal Dams. Lee's Pond Dam (CT 00061), Saugatuck River Basin, Westport, Connecticut. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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Lees Pond Dam is a stone masonry dam approximately 200 feet long and 17 feet high. The overflow spillway is 180 feet long and is 5 feet below the top of the dam. A 6x9 sluice gate is located 50 feet from the west abutment. Adjacent to the sluice gate is a fish ladder. Both the sluice gate and the fish ladder were added after the dam was constructed. The drainage area is 77.5 square miles and the pond has 152 acre-feet of available storage. The assesement of the dam is based on the visual inspection, available drawings, past operational performance and hydraulichydrologic computations. The dam is judged to be in poor condition with several areas that require attention. These areas include seepage through both abutments and the stone masonry and the undermining and advanced stage of deterioration of the spillway apron and the scour hole at the end of the sluice gate outlet. The dam is classified as small and has a low hazard potential in accordance with guidelines established by the Corps of Engineers. The test flood outflow for this dam is 8,460 cfs and corresponds to the 100-year flood. The test flood outflow will not overtop the dam.
- Hydrology, Limnology and Potamology
- Civil Engineering