National Program for Inspection of Non-Federal Dams. West Side Dam (CT 00484), Housatonic River Basin, Norfolk, Connecticut. Phase I Inspection Report

National Program for Inspection of Non-Federal Dams. West Side Dam (CT 00484), Housatonic River Basin, Norfolk, Connecticut. Phase I Inspection Report PDF Author: CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
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Languages : en
Pages : 134

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Book Description
The West Side Dam is a single purpose flood control dam. The dam consists of a compacted earth embankment on a previous foundation with a maximum height of 20 feet, a top width of 14 feet, and a crest length of 730 feet. The principal spillway is of the drop inlet type and discharges through a 36-inch concrete pipe through the center of the dam to an energy dissipator. A grass-covered 120 foot emergency spillway is excavated into the right abutment. Filter drains under the downstream embankment discharge through the side walls of the energy dissipator. The impoundment has a maximum storage capacity of 1,780 Acre-Feet. Based on the visual inspection, the dam is judged to be in good condition. Features that could affect the future integrity of the dam are the seepage and erosion of the right abutment and the emergency spillway. The spillway capacity of 3,000 cfs is equal to 106 percent of the routed Test Flood outflow and results in a freeboard of 0.1 feet.