Accession Number:

ADA143522

Title:

National Program for Inspection of Non-Federal Dams. Pope's Pond Dam (CT 00214), Southwestern Coastal Basin, Wilton, Connecticut. Phase I Inspection Report.

Descriptive Note:

Corporate Author:

CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV

Personal Author(s):

Report Date:

1980-04-01

Pagination or Media Count:

112.0

Abstract:

This dam is an earth embankment structure with a steel sheet pile core. It is approximately 650 feet long, 24 feet high with a top width of 15 feet and has a centrally located 200 foot long spillway. The original dam was built about 1890 and was substantially expanded to its present configuration in 1965. The official name of the impoundment created by the dam is Popes Pond, although it is also known as Streets Pond as shown on the USGS maps. Based on the visual inspection, review of construction plans and past operational performance, the dam is judged to be in FAIR condition. Minor seepage was noted on the downstream face of the east embankment. Some vegetation was noted in the joints of the spillway. The single control valve for the by-pass pipe is on the downstream side of the dam. The test flood for this dam is the Probable Maximum Flood PMF. The test flood has an inflow equal to 4575 cfs and an outflow discharge equal to 4475 cfs at a stillwater elevation of 371.5 which will not overtop the dam 1.5 feet freeboard. The maximum outflow capacity of the spillway under a stillwater condition is 7600 cfs, which is 170 percent of the test flood.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE