National Program for Inspection of Non-Federal Dams. Hammonasset Reservoir Dam (CT 00400), Hammonasset River Basin, Madison/Killingworth, Connecticut. Phase I Inspection Report.
Abstract
The Hammonasset Reservoir Dam is a concrete dam that is 447 feet long with a 163 foot spillway. It has an intake structure with a 36 inch blowoff and gates. Based on the visual inspection, records available and past operational performance, the dam is judged to be in good condition. There are areas of the dam which should be studied in order to monitor its behavior such as, the downstream side which shows signs of seepage at the junction of the rock and the dam as well as some of the expansion and contraction joints. The project will pass 75.8 percent of the Probable Maximum Flood (PMF) (recommended spillway design flood) before overtopping the dam. However the spillway capacity is not judged seriously inadequate because the water will flow only 1.15 feet over a concrete non-overflow section.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1978
- Accession Number
- ADA144727
Entities
Organizations
- New England District, U.S. Army Corps of Engineers