National Program For Inspection Of Non Federal Dams Notown Reservoir Dam And Dike Dam 00870 Dike 01240 Merrimack River Basin Leominster Massachusetts Phase I Inspection Report
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| Author | : CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. |
| Publisher | : |
| Total Pages | : 159 |
| Release | : 1980 |
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The main dam is 600 feet long with a hydraulic height of 21 feet. It contains a sheet piling and concrete upstream cutoff. The dike is 750 feet long with a hydraulic height of 13 feet height. The spillway's capacity with a 8-inch flashboards in place, is about 1,850 cfs or 37 percent of test flood outflow, at the top of dam. With the flashboards in place, the test flood outflow, 5,070 cfs, surcharges the reservior to elevation 741.5. The dam and dike and a small section of Route 2 are overtopped by 0.9 feet. Based on the visual inspection, the dam was in generally fair condition. However, due to the dense vegetation on the downstream slope, apparent seepage in this area could not be adequately inspected. This combined with apparent settlement along the upstream slope and the probable presence of root systems within the embankment give overall rating of the dam as poor. The dike was found to be in generally good condition.
| Author | : CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. |
| Publisher | : |
| Total Pages | : 80 |
| Release | : 1979 |
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The impounding structures at Fall Brook Reservoir include a 1392-foot long, 37-foot high main dam with a spillway and outlet, and a 256-foot long, 11-foot high dike. The spillway is located at the south abutment of the dam, and consists of a broad-crested weir 19 feet long with vertical stone masonry training walls that extend the length of the discharge channel. The outlet for the dam consists of a 30-inch diameter cast-iron pipe which discharges at the toe of th dam. The dam is generally in fair condition. The test flood outflow of 2,370 cfs and pool at El 657.6 will overtop the dam by 0.6 feet and the dike by 1.4 feet. The spillway capacity at El 646.2 (the low point on the crest of the dike) is 500 cfs, which is 21 percent of the test flood outflow.
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| Total Pages | : 998 |
| Release | : 1985 |
| Genre | : Science |
| ISBN | : |
| Author | : CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. |
| Publisher | : |
| Total Pages | : 144 |
| Release | : 1980 |
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Overlook Reservoir Dam is a 370 foot long, 47 foot high, earth embankment structure with a masonry core wall and a stone masonry gatehouse. There is a separate 900 foot long, 25 foot high dike with an 10 foot long concrete channel spillway, located along the northern part of the reservoir. The visual inspection indicated the dam and dike to be in generally fair condition. Heavy vegetation, animal burrows, surficial sloughing and erosion were observed on the side slopes of the dam. Excessive tree growth and seepage was observed at the dike. Leakage into the valve chamber located upstream of the chlorination building was observed and the functionability of the control valves at the facility are questionable. The test flood outflow requires only 5 percent of the spillways capacity. Therefore, neither the dam or dike would be overtopped by the test flood.
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| Total Pages | : 1022 |
| Release | : 1985 |
| Genre | : Government reports announcements & index |
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| Author | : CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. |
| Publisher | : |
| Total Pages | : 140 |
| Release | : 1980 |
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The project is comprised of and 800 foot long, 80 foot hydraulic height, earthfill main dam, and a 18 foot hydraulic height, 1,600 foot long earthfill dike. The main dam has a 78.5 foot long concrete spillway with a 450 foot long concrete and stone outlet channel. The spillway has a capacity of 4,320 cfs (to top of dam elevation 770.5) which is approximately 73 percent of the test flood outflow. The dam and dike are generally in fair condition.
| Author | : CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. |
| Publisher | : |
| Total Pages | : 103 |
| Release | : 1979 |
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The dam is a 807 ft. long 48 ft. high earthen structure. The dike is an earthen structure about 600 ft. long and 11.5 ft. high. The inspection revealed both the dam and dike to be in good condition. There were no recommendations for the dam after this inspection. The dam is intermediate in size with a significant hazard potential. (Author).
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| Publisher | : |
| Total Pages | : 976 |
| Release | : 1985 |
| Genre | : Government reports announcements & index |
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| Author | : CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. |
| Publisher | : |
| Total Pages | : 135 |
| Release | : 1981 |
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The North Dam is a 318 ft. long earth dam with a maximum height of 34.7 ft. Generally, the dam is in fair condition. There are deficiencies which must be corrected. The South Dam is a 551 ft. long earth dam. The dam is also in fair condition. Both dikes are in fair condition. They also have deficiencies which must be corrected. (Author).
| Author | : CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. |
| Publisher | : |
| Total Pages | : 102 |
| Release | : 1979 |
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The Souhegan River Watershed Dam No. 13 consists of two earth embankment sections known as the main dam and the east dike. The main dam is 500 ft. long and 13.5 ft. high with a drop inlet service spillway structure and a 30 inch outlet conduit. The east dike is 620 ft. long and 9.5 ft. high with no outlet facilities. An earth emergency spillway 112 ft. wide is cut into the right abutment. It is small in size with a significant hazard potential. The dam is in good condition at the present time. No conditions were observed which require further investigation. There are various remedial measures which must be implemented by the owner. Keywords include: Visual inspection; Dam safety; Merrimack River Basin; New Ipswich, New Hampshire; and Unnamed tributary of the Souhegan River.
