National Program for Inspection of Non-Federal Dams. Halls Pond Dam (CT 00388 and CT 00598), Thames River Basin, Eastford, Connecticut. Phase I Inspection Report.
Abstract
Halls Pond includes two dams, with the northerly dam including the spillway and outlet works. The southerly dam consists of a dike only, with no outlet. Both dams were rebuilt in 1968. This is a State of Connecticut owned pond used for recreation. The north dam is 250 feet long with the original dam being earth fill with masonry faces. In 1968, an impervious core and previous shell were added to the downstream face. This dam has a maximum height of 23.5 feet and a spillway consisting of twin 9 x 3.3-ft. box culverts. The south dam is a 250 foot long earth dike with a maximum height of 14 feet. In 1968, an impervious core with pervious shell was added to the downstream face. The dam is in fair condition with some seepage at the south dam. Corps of Engineers Guidelines recommend a test flood of from 50 to 100 year frequency for dams of this size and hazard classification. A 100 year storm was used with a peak inflow of 560 cfs and a peak outflow of 243 cfs. The spillway will pass this flow with a water surface elevation of 516.7 without the outlet works operating and elevation 516.3 with the outlet gate full open.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1981
- Accession Number
- ADA144552
Entities
Organizations
- New England District, U.S. Army Corps of Engineers