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Author: National Dam Inspection Program (U.S.)
Publisher:
ISBN:
Category : Dam safety
Languages : en
Pages :
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Author: National Dam Inspection Program (U.S.)
Publisher:
ISBN:
Category : Dam safety
Languages : en
Pages :
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Author: CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher:
ISBN:
Category :
Languages : en
Pages : 184
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Stony Brook Reservoir Dam consists of two earthfill embankments with concrete core walls, separated by a 650 ft. long natural promontory. A concrete spillway, 35 ft. wide, is located in the Side Dam. The spillway discharges into a stone masonry channel about 220 ft. long. A gate house located upstream from the Main Dam houses controls for the inlet to a 24 in. dia. water supply line and a 24 in. dia. low level outlet. The dam and appurtenant works are judged to be in generally fair condition. Brush was growing on the downstream slopes of both dams and in the spillway discharge channel. The gate house is in need of repair and the condition of the outlet gate could not be verified. Seeps were found downstream of both dams and cavities were found in the slopes of both embankments. The routed test flood outflow of 5,200 cfs overtops the crest of the Main Dam by 1.3 ft. and the Side Dam by 0.6 ft. The spillway can pass 1,250 cfs or about 24 percent of the routed test flood outflow without overtopping the Main Dam.
Author: CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher:
ISBN:
Category :
Languages : en
Pages : 73
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Wheeler Pond Dam is a masonry structure constructed in the early 1800's. The dam has a maximum height o 20.0 feet and is approximately 54.0 feet long. It is comprised of a 21.0 foot concrete ogee spillway at the left abutment and a 33.0 foot vertical masonry wall at the right abutment. The outlet works at the left abutment is a system of intake chambers and valve pits which withdraw a supply of process water for the adjacent mill complex. Based upon the visual inspection at the site, the lack of engineering back-up data available, and no operational or maintenance evidence, there are areas of concern which must be corrected to assure the long term performance of this dam. The dam is considered to be in fair condition with the following visible signs of concern: the inoperable, low-level spillway gate, the poor condition of the mill intake and by-pass chamber and valve pit system now used for the control of water levels in the pond, the obstructed downstream channel and the apparent lack of maintenance of the dam and its appurtenances. A spillway design test flood of 6995 cfs one half of the probable maximum flood) will overtop the dam by approximately 6.92 feet.
Author: CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher:
ISBN:
Category :
Languages : en
Pages : 87
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Oxoboxo Lake Dam is an earth dam with vertical masonry facing. The dam has a maximum height of 26.0 feet and is approximately 166.0 feet long, including the spillway. The top of the embankment has a typical width of 45.0 feet with a grassed surface. The spillway is located on the right abutment of the dam and is a broad crested overflow section with vertical masonry training walls. Due to its age, Oxoboxo Lake Dam was neither designed nor constructed by approved state of the art methods. Based on the visual inspection at the site, the lack of engineering data available and no operational or maintenance evidence, there are areas of concern which must be corrected to assure the long term performance of this dam. This dam is considered to be in fair condition. There are several visible signs of distress which indicate a potential hazard at this site: seepage at the left abutment interface, outlet conduit within the dam itself and along the spillway training walls, in-operable low-level spillway gates, damaged trash screen at the outlet works, obstructed downstream channels and a general lack of proper and regular maintenance. A spillway design test flood outflow of 2228 C.F.S. (one-half of the probable maximum flood) will overtop the dam by approximately 2.66 feet.
Author:
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ISBN:
Category : Irrigation
Languages : en
Pages : 716
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Author: Connecticut Water Resources Commission
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 138
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Author: CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV.
Publisher:
ISBN:
Category :
Languages : en
Pages : 79
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Congdon dam is a stone-faced earth embankment dam constructed around 1900 and was used for power and process water at a mill located downstream which is presently abandoned. The dam has a maximum height of 35 feet and is approximately 150 feet in length (including the spillway). The spillway is a stone masonry uncontrolled, vertical fall, sharp crested weir, 50 feet in length. The assessment of the facility is based on the visual inspection sine engineering, operational and maintenance data are not available. The dam is judged to be in FAIR condition with several maintenance items that require attention to insure the long-term performance of the structure. They include; inoperable outlet works structures, missing and dislodged masonry blocks on the downstream face of the dam, seepage along the downstream face of the right of the overflow spillway, missing mortar between the stone masonry, the lack of a scheduled inspection or maintenance program, an irregular crest surface, and trees and brush growing in the stone masonry walls, spillway and on top of the dam. Assuming the pool elevation at the top of the dam, the spillway can pass a flow of 1,845 CFS, which represents only 24 percent of the routed test flood outflow.
Author: United States. Army. Corps of Engineers. New England Division
Publisher:
ISBN:
Category : Dams
Languages : en
Pages : 196
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 406
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Stream measurements
Languages : en
Pages : 1094
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