National Program for Inspection of Non-Federal Dams. Tyler Dam MA 01195, Merrimack River Basin, Marlborough, Massachusetts. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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Tyler Dam is an earth embankment structure with a silt core wall. It is 1,490 feet long and has a hydraulic height of 34.4 feet. The 275-foot long emergency spillway discharges to the Assabet River and is located on the east side of the site. A conduit 9 feet wide by 7 feet high also discharges to the Assabet River. As a result of the visual inspection and a review of available data, Tyler Dam is considered to be in fair condition. Major concerns are sinkholes at the interface of the embankment and riprap extensive tresspassing by motorbikes with consequent erosion of the dam slopes significant erosion at the upstream slope and right abutment and between the downstream slope and left abutment irregularity of the dam crest and lack of erosion protection for the ditch at the downstream toe. The maximum spillway capacity with the water level at the dam crest was estimated to be 30,800 cfs, which is about 1.2 times the test flood discharge.
- Hydrology, Limnology and Potamology
- Civil Engineering