A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
National Program for Inspection of Non-Federal Dams. Boulder Lake Dam (CT 00518), Connecticut Coastal Basin, Clinton, Connecticut. Phase I Inspection Report
Boulder Lake Dam is an earthfill embankment with a rubble stone and boulder faced wall on the downstream side. Approximately 130 ft. long, the dam has a maximum height of 14 ft. and a top width varying from 10 to 12 ft. The normal flow spillway is a notched 5 ft. wide section whereas a low concrete formation extending 13 ft. east and 26 ft. west of this spillway acts as an overflow weir during high water conditions. The total length of the overflow section including the spillway is accordingly 44 ft. In addition, the earth embankments to the east, with a rubble stone and boulder downstream face also passes part of the flood flow during high water conditions. Based on the visual inspection, the Boulder Lake Dam is generally in fair condition. Several areas of concern were observed requiring monitoring maintenance and/or repair. Some features found existing that could affect the stability of the dam are: loosely compacted sand on the crest on the dam embankment; sand bags piled on the crest of the dam over its eastern section, which could deteriorate with time; and inadequate spillway capacity. The spillway capacity of the 5 ft. notched spillway section together with the 39 ft. overflow dam section is 66 cfs which is only 44% of the test flood flow.
National Program for Inspection of Non-Federal Dams. Boulder Lake Dam (CT 00518), Connecticut Coastal Basin, Clinton, Connecticut. Phase I Inspection Report
Boulder Lake Dam is an earthfill embankment with a rubble stone and boulder faced wall on the downstream side. Approximately 130 ft. long, the dam has a maximum height of 14 ft. and a top width varying from 10 to 12 ft. The normal flow spillway is a notched 5 ft. wide section whereas a low concrete formation extending 13 ft. east and 26 ft. west of this spillway acts as an overflow weir during high water conditions. The total length of the overflow section including the spillway is accordingly 44 ft. In addition, the earth embankments to the east, with a rubble stone and boulder downstream face also passes part of the flood flow during high water conditions. Based on the visual inspection, the Boulder Lake Dam is generally in fair condition. Several areas of concern were observed requiring monitoring maintenance and/or repair. Some features found existing that could affect the stability of the dam are: loosely compacted sand on the crest on the dam embankment; sand bags piled on the crest of the dam over its eastern section, which could deteriorate with time; and inadequate spillway capacity. The spillway capacity of the 5 ft. notched spillway section together with the 39 ft. overflow dam section is 66 cfs which is only 44% of the test flood flow.
National Program for Inspection of Non-Federal Dams. Boulder Lake Dam (CT 00518), Connecticut Coastal Basin, Clinton, Connecticut. Phase I Inspection Report
1981
72 pages
Report
No indication
English