A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
National Program for Inspection of Non-Federal Dams. Simpson Pond Dam (CT 00630), Quinnipiac River Basin, Wallingford, Connecticut. Phase I Inspection Report
Simpson Pond Dam is a stone masonry and earth embankment structure approximately 300 feet long and 22.3 feet high. The northern third of the downstream face of the dam is stone masonry either vertical or built in steps. The downstream face of the southern two thirds of the dam is earth, with 1:1 slopes and a crest width of approximately 10 feet. The main spillway is located near the northern end of the dam and is 42 feet long. There is also an auxiliary spillway at the northern end of the dam that is 55 feet long and 1 foot higher than the main spillway. There is a service bridge leading to a platform and gate which controls a low-level discharge pipe that passes through the base of the dam. The gate is operable and is used to lower the pond for maintenance purposes. The assessment of the dam is based on a visual inspection and hydraulic/hydrologic computations. The dam is judged to be in FAIR condition with several areas that require attention. These areas include seepage through the dam below and adjacent to the spillway, missing capstones on the spillway weir, vegetation on the earth embankment and in the downstream channel and severe scouring of the northern downstream channel bank below the auxiliary spillway. The spillway capacity at the top of the dam is 885 cfs or 30 percent of the test flood outflow. The test flood outflow will overtop the dam by 1.9 feet.
National Program for Inspection of Non-Federal Dams. Simpson Pond Dam (CT 00630), Quinnipiac River Basin, Wallingford, Connecticut. Phase I Inspection Report
Simpson Pond Dam is a stone masonry and earth embankment structure approximately 300 feet long and 22.3 feet high. The northern third of the downstream face of the dam is stone masonry either vertical or built in steps. The downstream face of the southern two thirds of the dam is earth, with 1:1 slopes and a crest width of approximately 10 feet. The main spillway is located near the northern end of the dam and is 42 feet long. There is also an auxiliary spillway at the northern end of the dam that is 55 feet long and 1 foot higher than the main spillway. There is a service bridge leading to a platform and gate which controls a low-level discharge pipe that passes through the base of the dam. The gate is operable and is used to lower the pond for maintenance purposes. The assessment of the dam is based on a visual inspection and hydraulic/hydrologic computations. The dam is judged to be in FAIR condition with several areas that require attention. These areas include seepage through the dam below and adjacent to the spillway, missing capstones on the spillway weir, vegetation on the earth embankment and in the downstream channel and severe scouring of the northern downstream channel bank below the auxiliary spillway. The spillway capacity at the top of the dam is 885 cfs or 30 percent of the test flood outflow. The test flood outflow will overtop the dam by 1.9 feet.
National Program for Inspection of Non-Federal Dams. Simpson Pond Dam (CT 00630), Quinnipiac River Basin, Wallingford, Connecticut. Phase I Inspection Report
1981
64 pages
Report
No indication
English