Accession Number:

ADA143743

Title:

National Program for Inspection of Non-Federal Dams. Barnes Reservoir Dam (CT 00236), Coastal Basin, Salem-Montville, Connecticut. Phase I Inspection Report.

Descriptive Note:

Corporate Author:

CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV

Personal Author(s):

Report Date:

1979-05-01

Pagination or Media Count:

93.0

Abstract:

The dam at Barnes Reservoir is an earth embankment approximately 1,200 feet long, 28 feet high with an average crest width of 15 feet. An uncontrolled stone masonry spillway is constructed integrally with the embankment and its discharges flow through a curved converging chute to the stream below the dam. The outlet works and control tower are located near the left abutment of the dam and discharges from the towers wet well flow through a 24-inch diameter conduit beneath the dam. As a result of the visual inspection and the review of limited available data regarding this facility, the dam is considered to be in FAIR condition. To assure the long-term performance of this structure, several items of concern require attention The apparent seepage beneath the spillway slab, a localized depression area in the crest of the dike, the extensive overgrowth of the embankments, spillway and downstream channel, and the inoperability of the upper intake gate to the control tower. The maximum outflow capacity of the spillway under a stillwater condition is equal to 1,200 CFS which represents more than 100 percent of the test flood. However, this discharge will produce a water surface level in the reservoir that has a freeboard allowance of only 1.2 feet below the top of the dam.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE