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. Comstock Pond Dam (CT 00424), Connecticut River Basin, Essex, Connecticut. Phase I Inspection Report
Comstock Pond Dam is an earth fill dam with vertical stone masonry walls along the upstream and downstrams faces. A 25 foot long concrete spillway is located near the middle of the dam and it is bordered by masonry training walls. The downstream spillway channel consists of a 48-inch culvert under Main Street followed by a natural channel with stone walls. The dam has a total length of 540 feet, a maximum height of 8 feet, and a crest width of 16 feet. The dam has a 10 foot by 10 foot wooden platform outlet structure. This platform houses 2 drop screens, 3 gate valve shafts and a 4-inch fire drawoff pipe. The gate valves control a 15-inch outlet pipe which emerges just downstream of the spillway, and two separate pipes which supply service water to the Pratt Read Corporation. The visual inspection revealed that the dam is in fair condition. The upstream stone masonry wall and cap have deteriorated and collapsed in a number of locations. There is an area of erosion and sloughing along the upstream face beyond Station 3+90 in the direction of the left abutment. The ground is soggy at a point approximately 20 feet to the right of the right edge of the spillway. There is some seepage occurring through the downstream wall near the right edge of the spillway. The spillway with water at the top of the dam is capable of passing 186 cfs or 17 percent of the test flood outflow. The test flood will overtop the dam by 0.9 feet.
National Program for Inspection of Non-Federal Dams. Comstock Pond Dam (CT 00424), Connecticut River Basin, Essex, Connecticut. Phase I Inspection Report
Comstock Pond Dam is an earth fill dam with vertical stone masonry walls along the upstream and downstrams faces. A 25 foot long concrete spillway is located near the middle of the dam and it is bordered by masonry training walls. The downstream spillway channel consists of a 48-inch culvert under Main Street followed by a natural channel with stone walls. The dam has a total length of 540 feet, a maximum height of 8 feet, and a crest width of 16 feet. The dam has a 10 foot by 10 foot wooden platform outlet structure. This platform houses 2 drop screens, 3 gate valve shafts and a 4-inch fire drawoff pipe. The gate valves control a 15-inch outlet pipe which emerges just downstream of the spillway, and two separate pipes which supply service water to the Pratt Read Corporation. The visual inspection revealed that the dam is in fair condition. The upstream stone masonry wall and cap have deteriorated and collapsed in a number of locations. There is an area of erosion and sloughing along the upstream face beyond Station 3+90 in the direction of the left abutment. The ground is soggy at a point approximately 20 feet to the right of the right edge of the spillway. There is some seepage occurring through the downstream wall near the right edge of the spillway. The spillway with water at the top of the dam is capable of passing 186 cfs or 17 percent of the test flood outflow. The test flood will overtop the dam by 0.9 feet.
National Program for Inspection of Non-Federal Dams. Comstock Pond Dam (CT 00424), Connecticut River Basin, Essex, Connecticut. Phase I Inspection Report
1981
73 pages
Report
No indication
English