Accession Number:

ADA143045

Title:

National Program for Inspection of Non-Federal Dams. Lake Whitney Dam (CT 00119), Quinnipiac River Basin, Hamden, Connecticut. Phase I Inspection Report.

Descriptive Note:

Corporate Author:

CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV

Personal Author(s):

Report Date:

1978-08-01

Pagination or Media Count:

74.0

Abstract:

The dam is comprised of an earthen embankment on the upstream side of a near-vertical rubble stone masonry wall, which is approximately 340 feet in length and rises approximately 37 feet above the original streambed elevation of the Mill River. The upstream earthen embankment is approximately 20 feet wide at the dam crest and has an upstream slope with a maximum inclination of 3 horizontal to 1 vertical. The right portion of the spillway is a concrete compounded circular crest with a sloped downstream face. The left portion of the spillway is a side channel concrete ogee section. The area below the dam is developed with industrial buildings, a high school, and residential structures. Based upon the visual inspection at the site and past performance of the dam, the dam is judged to be in good condition. No evidence was observed of structural instability in the earthen embankment or the masonry wall. The condition of both the embankment and wall appears to be good. There are some areas requiring attention. Based upon our hydraulics computations, the spillway capacity is 9700 cubic feet per second, which is equivalent to approximately 21 percent of the Test Flood. Peak inflow to the reservoir is 48,600 cubic feet per second peak outflow Test Flood is 46,500 cubic feet per second with the dam overtopped 4.4 feet.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE