National Program for Inspection of Non-Federal Dams. Factory Pond Dam (CT 00217), Norwalk River Basin, Georgetown, Connecticut. Phase I Inspection Report.
Abstract
Factory Pond Dam is a combination of sheet piling/concrete fill and masonry that is approximately 175 feet long and 18.75 feet high. The sheet piling portion of the dam consists of two rows of piling, 5 feet apart, filled with concrete. The spillway is located on the southern portion of the dam and consists of a 75-foot long masonry weir. There is a 5-foot diameter discharge pipe that passes through the dam and an adjacent factory. Inside this pipe is a turbine that was once used for water power, but is now only used as a valve. The drainage area is 12.2 square miles and the reservoir has 192 acre-feet of available storage. The assessment of the dam is based on the visual inspection, past operational performance and hydraulic/hydrologic computations. The dam is judged to be in fair condition with several areas that require attention. These areas include seepage in the vicinity of the west abutment of the spillway, concrete that needs repairing and masonry that needs repointing. The dam is classified as small and has a high hazard potential in accordance with guidelines established by the Corps of Engineers. The test flood for this dam is 1/2 the Probable Maximum Flood (PMF). The test flood inflow is 9,640 cfs and the routed test flood outflow is 8,250 cfs. The test flood will overtop the dam by 4.25 feet.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1980
- Accession Number
- ADA143519
Entities
Organizations
- New England District, U.S. Army Corps of Engineers