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. West Pond Outlet (MA 00186), Massachusetts Coastal Basin, Gloucester, Massachusetts. Phase I Inspection Report
The impounding structure at West Pond is a 123-foot long, 12-foot high earthfill dam with an overflow spillway at the east abutment. The spillway is located at the east abutment of the dam and consists of a notched ungated concrete weir with an overall length of 16 feet. The low point on the top of the dam is lower than the unnotched portion of the spillway. Based on the visual inspection of the site and a review of the limited data available on the dam, the dam is considered to be in poor condition and is in need of extensive repair work. The following deficiencies were observed at the site: moderate seepage below the toe of the dam; severe erosion of the upstream slope exposing the core wall; erosion of the top and downstream slope of the dam, localized building along the downstream slope; lack of a low level outlet; separation of the training walls from the spillway; seepage around and beneath the spillway; brush, timber, and debris in the discharge channel; and trees and vegetation growing on the slopes of the dam. The peak test flood outflow of 107 cfs will overtop the dam by a maximum of 1.3 feet. The spillway can discharge only 1.1 percent of the test flood before the dam is overtopped.
National Program for Inspection of Non-Federal Dams. West Pond Outlet (MA 00186), Massachusetts Coastal Basin, Gloucester, Massachusetts. Phase I Inspection Report
The impounding structure at West Pond is a 123-foot long, 12-foot high earthfill dam with an overflow spillway at the east abutment. The spillway is located at the east abutment of the dam and consists of a notched ungated concrete weir with an overall length of 16 feet. The low point on the top of the dam is lower than the unnotched portion of the spillway. Based on the visual inspection of the site and a review of the limited data available on the dam, the dam is considered to be in poor condition and is in need of extensive repair work. The following deficiencies were observed at the site: moderate seepage below the toe of the dam; severe erosion of the upstream slope exposing the core wall; erosion of the top and downstream slope of the dam, localized building along the downstream slope; lack of a low level outlet; separation of the training walls from the spillway; seepage around and beneath the spillway; brush, timber, and debris in the discharge channel; and trees and vegetation growing on the slopes of the dam. The peak test flood outflow of 107 cfs will overtop the dam by a maximum of 1.3 feet. The spillway can discharge only 1.1 percent of the test flood before the dam is overtopped.
National Program for Inspection of Non-Federal Dams. West Pond Outlet (MA 00186), Massachusetts Coastal Basin, Gloucester, Massachusetts. Phase I Inspection Report
1979
67 pages
Report
No indication
English
Civil Engineering , Dams , Reservoirs , Inspection , Earth fills , Water flow , Spillways , Ponds , Walls , Concrete , Visual inspection , Safety , Seepage , Erosion , Bulging , Separation , Debris , Channels(Waterways) , Downstream flow , Slope , Plant growth , Test methods , Floods , Peak values , Massachusetts , Abutments , National Dam Inspection Program