National Program for Inspection of Non-Federal Dams. Sanborn Pond Outlet Dam (NH 00182), NHWRB Number 143.10, Merrimack River Basin, Loudon, New Hampshire. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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Sanborn Pond Outlet dam is an earthen embankment structure about 265 feet in overall length and a maximum height of 16.5 feet from crest of dam to downstream toe. The upstream and downstream faces consists of a 2 feet thick vertical dry stone masonry wall which extends the full height of the dam. Located about 105 feet from the left abutment is the principal spillway which consists of a 19 feet long spillway structure with vertical dry masonry training walls and flashboards. The dam in considered to be in poor condition with some major concern which must be corrected. It is intermediate in size with a significant hazard potential. Keywords include Visual inspection, Dam safety, Merrimack River Basin, Louden, New Hampshire, and Sanborn Brook.
- Civil Engineering