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. Granite Reservoir Dam (MA 00105), French River Basin, Oxford, Massachusetts. Phase I Inspection Report
Granite Reservoir Dam is a 615-foot long, 18-foot high earthfill dam. The downstream face of the dam is a vertical dry stone masonry wall. The upstream face is an earthen slope, except in the vicinity of the outlet works, where there is a concrete headwall. The spillway, which is located about 250 feet from the right abutment of the dam, consists of a concrete weir with a slightly rounded crest and a broad concrete apron. The length of the weir is 66 feet and is at elevation (El) 631.0. The downstream face of the weir is a concrete and stone cascade which leads to a rectangular stilling basin. The outlet for the dam is a 2-foot square box conduit through the embankment and is located about 125 feet northeast of the spillway. Flow through the conduit is controlled b a 3-foot-square wooden sluice gate. The following are visible signs of distress which indicate a potential hazard at the site: a severe bulge in the downstream stone masonry wall of the dam; leakage through the outlet conduit and through the masonry wall in the vicinity of the bulge; possible damage to the outlet gate; seepage below the toe of the embankment; erosion at several locations on the dam embankment and along the outlet channel; dense growth of trees and brush at the dam and along the discharge channels; and minor deterioration of the concrete on the spillway. An outflow test flood (one-half the probable maximum flood) of 2,800 cfs at El 635.7 will overtop the dam by 1.3 feet. The spillway can discharge 38 percent of the test flood.
National Program for Inspection of Non-Federal Dams. Granite Reservoir Dam (MA 00105), French River Basin, Oxford, Massachusetts. Phase I Inspection Report
Granite Reservoir Dam is a 615-foot long, 18-foot high earthfill dam. The downstream face of the dam is a vertical dry stone masonry wall. The upstream face is an earthen slope, except in the vicinity of the outlet works, where there is a concrete headwall. The spillway, which is located about 250 feet from the right abutment of the dam, consists of a concrete weir with a slightly rounded crest and a broad concrete apron. The length of the weir is 66 feet and is at elevation (El) 631.0. The downstream face of the weir is a concrete and stone cascade which leads to a rectangular stilling basin. The outlet for the dam is a 2-foot square box conduit through the embankment and is located about 125 feet northeast of the spillway. Flow through the conduit is controlled b a 3-foot-square wooden sluice gate. The following are visible signs of distress which indicate a potential hazard at the site: a severe bulge in the downstream stone masonry wall of the dam; leakage through the outlet conduit and through the masonry wall in the vicinity of the bulge; possible damage to the outlet gate; seepage below the toe of the embankment; erosion at several locations on the dam embankment and along the outlet channel; dense growth of trees and brush at the dam and along the discharge channels; and minor deterioration of the concrete on the spillway. An outflow test flood (one-half the probable maximum flood) of 2,800 cfs at El 635.7 will overtop the dam by 1.3 feet. The spillway can discharge 38 percent of the test flood.
National Program for Inspection of Non-Federal Dams. Granite Reservoir Dam (MA 00105), French River Basin, Oxford, Massachusetts. Phase I Inspection Report
1979
92 pages
Report
No indication
English