National Program for Inspection of Non-Federal Dams. Filtrine Dam (NH 00067) State Number 109.14, Merrimack River Basin, Harrisville, New Hampshire. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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The dam has a hydraulic height of 27 ft. and is 94 ft. long. It is a run of the river, quarried stone gravity dam. The dam is in fair condition. Minor concerns are the inability to inspect the stone faces of the overflow spillway and leakage in several places in the south end of the downstream face. It is small in size with a significant hazard classification. Author
- Civil Engineering