Accession Number : ADA336742

Title :   Access Study to All Pertinent Parts of Dam Projects During High Reservoir Conditions. Upper Connecticut River Basin, New Hampshire and Vermont.

Descriptive Note : Access study rept.

Corporate Author : CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV

PDF Url : ADA336742

Report Date : JUL 1992

Pagination or Media Count : 103

Abstract : This report evaluates existing access routes to pertinent parts of completed Corps of Engineers dams in the Upper Connecticut River Basin during high reservoir conditions and makes recommendations for improved access when adequate access is not available. Seven dams in the Upper Connecticut River Basin were investigated; Union Village Dam, North Hartland Lake, North Springfield Lake, Ball Mountain Lake, Townshend Lake, Surry Mountain Lake, and Otter Brook Lake. Each project was studied to evaluate the adequacy of the existing emergency access routes to the embankment crests, downstream toes of the dam and dike embankments, the emergency spillways, and outlet works. Two general conditions were evaluated that would require emergency access: (1) uncontrolled seepage at the downstream toe of a dam or dike embankment, and (2) failure of rock cut slopes causing blockage of spillway or outlet works channels. Condition number one was considered to be more severe because it would pose a structural threat. Access to some features was found to be inadequate. However, in some cases, existing access, although not meeting design criteria, was judged to be acceptable at this time.

Descriptors :   *ACCESS, *BASINS(GEOGRAPHIC), *DAMS, STRUCTURAL PROPERTIES, ROCK, MOUNTAINS, SLOPE, ARMY CORPS OF ENGINEERS, ROUTING, VERMONT, LAKES, EMBANKMENTS, DIKES, RESERVOIRS, NEW HAMPSHIRE, SEEPAGE, SPILLWAYS, CONNECTICUT RIVER.

Subject Categories : Geography
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE