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. Mac Kenzie Reservoir Dam (CT 00037), Connecticut Coastal Basin, Wallingford, Connecticut. Phase I Inspection Report
The 425-foot-long dam, built in 1944, is an earthfill embankment with a concrete corewall, concrete spillway and a concrete gatehouse. The earth embankment is 280 feet long and the concrete structures, which include the spillway weir and the intake chamber, are 145 feet in length. The earthfill embankment is 10 feet wide at the top and 30 feet above the streambed of the Muddy River. The spillway is a 90 foot long concrete ogee weir with a concrete apron and a short stone paved discharge channel. Freeboard above the spillway weir crest is 5 feet. The gatehouse, adjacent to the right side of the spillway, is a concrete intake chamber with a screened opening for a 24 inch low level outlet. There are two openings in the upstream chamber wall and one opening in the left wall for three 20 inch supply valves. The outlets are a 20 inch supply line to the downstream filterplant, an 8 inch drain pipe and a 24 inch low level outlet. All gatehouse valves are operable. Based upon the visual inspection at the site and past performance of the dam, the dam is judged to be in fair condition. No evidence of instability was observed in the embankment, spillway or appurtenant structures. There are some areas requiring monitoring and maintenance, such as visible seepage at the left side of the embankment toe, seepage through the expansion joints of the spillway weir and the left spillway training wall, and seepage along the left slope of the downstream channel. The spillway capacity is 4,300 cubic feet per second (cfs), which is equivalent to 30% of the routed test flood outflow.
National Program for Inspection of Non-Federal Dams. Mac Kenzie Reservoir Dam (CT 00037), Connecticut Coastal Basin, Wallingford, Connecticut. Phase I Inspection Report
The 425-foot-long dam, built in 1944, is an earthfill embankment with a concrete corewall, concrete spillway and a concrete gatehouse. The earth embankment is 280 feet long and the concrete structures, which include the spillway weir and the intake chamber, are 145 feet in length. The earthfill embankment is 10 feet wide at the top and 30 feet above the streambed of the Muddy River. The spillway is a 90 foot long concrete ogee weir with a concrete apron and a short stone paved discharge channel. Freeboard above the spillway weir crest is 5 feet. The gatehouse, adjacent to the right side of the spillway, is a concrete intake chamber with a screened opening for a 24 inch low level outlet. There are two openings in the upstream chamber wall and one opening in the left wall for three 20 inch supply valves. The outlets are a 20 inch supply line to the downstream filterplant, an 8 inch drain pipe and a 24 inch low level outlet. All gatehouse valves are operable. Based upon the visual inspection at the site and past performance of the dam, the dam is judged to be in fair condition. No evidence of instability was observed in the embankment, spillway or appurtenant structures. There are some areas requiring monitoring and maintenance, such as visible seepage at the left side of the embankment toe, seepage through the expansion joints of the spillway weir and the left spillway training wall, and seepage along the left slope of the downstream channel. The spillway capacity is 4,300 cubic feet per second (cfs), which is equivalent to 30% of the routed test flood outflow.
National Program for Inspection of Non-Federal Dams. Mac Kenzie Reservoir Dam (CT 00037), Connecticut Coastal Basin, Wallingford, Connecticut. Phase I Inspection Report
1979
96 pages
Report
No indication
English