Accession Number:

ADA142760

Title:

National Program for Inspection of Non-Federal Dams. Eureka Lake Dam (CT 00077), Housatonic River Basin, Danbury, Connecticut. Phase I Inspection Report.

Descriptive Note:

Corporate Author:

CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV

Personal Author(s):

Report Date:

1979-08-01

Pagination or Media Count:

130.0

Abstract:

The project consists of two earthfill embankments, a spillway with two masonry weirs, and a masonry gatehouse. The upper embankment forms the reservoir dam, and the lower embankment which is 140 or - feet downstream, forms a filter basin between the two dams. Based upon the visual inspection at the site and past performance of the dam, the dam is judged to be in fair condition. No evidence of instability of the embankments or appurtenant structures was observed. There are some areas requiring attention, maintenance and monitoring, such as seepage on the downstream slope and toe of the filter basin dam, substantial erosion on the downstream slope of the filter basin dam near the outlet pipes and excessive seepage from the gatehouse drain pipe. Deterioration of the spillway training wall and lower spillway weir, and obstructions in the spillway channel were noted. The upper spillway capacity is 29 cubic feet per second cfs and the lower spillway capacity is 66 cfs, which is equivalent to 3 and 6 of the routed test blood outflow, respectively.

Descriptors:

• *EARTH DAMS
• DEFICIENCIES
• SAFETY
• VISUAL INSPECTION
• CONNECTICUT

Subject Categories:

• Hydrology, Limnology and Potamology
• Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE