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. Wangum Lake Dam (CT 00516), Housatonic River Basin, Canaan, Connecticut. Phase I Inspection Report
Wangum Lake Dam is a 300-foot long earth embankment with a maximum height of about 10 feet. The upstream face of the dam is on a slope of about 1H:1V and the downstream face of the dam is variable, with the slope averaging about 5H:1V. the crest width averages about 35 feet. The spillway consists of a masonry weir about 5.5 feet wide with a crest elevation about one foot below the top of the dam. A 12-inch diameter valve is located in the center of the spillway headwall. The invert of the valve is one foot below the spillway crest. The spillway discharge travels 15 feet through a stone-paved outlet channel and into a 24-inch diameter cast iron pipe. The pipe directs the discharge into a small mill pond located at the downstream toe of the dam. The dam appears to be in fair condition. The upstream face is provided with limited riprap protection resulting in exposure of portions of the embankment to erosion. The normal pool freeboard of about one foot exposes the dam crest to wave action. The dam was overtopped by an estimated 3 inches in 1972, which indicates that the spillway discharge capacity and reservoir storage capacity above normal pool are inadequate for appreciable storm events. The continued deterioration of the headwall at the entrance to the spillway outlet conduit could lead to obstruction of the pipe entrance. No emergency low-level outlet, independent of the water supply system, exists at this site. The spillway system is capable of discharging 19 cfs, which is about 2 percent of the routed test flood outflow, prior to overtopping of the dam.
National Program for Inspection of Non-Federal Dams. Wangum Lake Dam (CT 00516), Housatonic River Basin, Canaan, Connecticut. Phase I Inspection Report
Wangum Lake Dam is a 300-foot long earth embankment with a maximum height of about 10 feet. The upstream face of the dam is on a slope of about 1H:1V and the downstream face of the dam is variable, with the slope averaging about 5H:1V. the crest width averages about 35 feet. The spillway consists of a masonry weir about 5.5 feet wide with a crest elevation about one foot below the top of the dam. A 12-inch diameter valve is located in the center of the spillway headwall. The invert of the valve is one foot below the spillway crest. The spillway discharge travels 15 feet through a stone-paved outlet channel and into a 24-inch diameter cast iron pipe. The pipe directs the discharge into a small mill pond located at the downstream toe of the dam. The dam appears to be in fair condition. The upstream face is provided with limited riprap protection resulting in exposure of portions of the embankment to erosion. The normal pool freeboard of about one foot exposes the dam crest to wave action. The dam was overtopped by an estimated 3 inches in 1972, which indicates that the spillway discharge capacity and reservoir storage capacity above normal pool are inadequate for appreciable storm events. The continued deterioration of the headwall at the entrance to the spillway outlet conduit could lead to obstruction of the pipe entrance. No emergency low-level outlet, independent of the water supply system, exists at this site. The spillway system is capable of discharging 19 cfs, which is about 2 percent of the routed test flood outflow, prior to overtopping of the dam.
National Program for Inspection of Non-Federal Dams. Wangum Lake Dam (CT 00516), Housatonic River Basin, Canaan, Connecticut. Phase I Inspection Report
1980
74 pages
Report
No indication
English