National Program for Inspection of Non-Federal Dams. Whites Mill Pond Dam (MA 00630), Connecticut River Basin, Winchendon, Massachusetts. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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Whites Mill Pond dam which was built before 1923 is a 340-foot long earthfill dam with upstream and downstream dry stone masonry walls. The dam has a maximum height of 13 feet and consists of a spillway, low level outlet, an intake toi a plant, and an earth dike. The following deficiencies were observed at the site severe seepage at several locations along the toe of the dam downstream stone masonry walls are out of plumb lack of access to the low level outlet operator erosion at the low point of the dam crest bulging of the downstream masonry wall in several locations stone missing from the upstream face of the spillway, mortar missing from the stone masonry spillway of the dam heavy growth of brush and trees on the dam crest and on the dike and an accumulation of debris in the discharge channel. Hydraulic analyses indicate that the spillway without stoplogs can discharge 520 cfs, or 76 percent of the test flood outflow before the dam is overtopped. With the stoplogs, the spillway can discharge 170 cfs or 22 percent of the test flood outflow before the dam is overtopped.
- Hydrology, Limnology and Potamology
- Civil Engineering