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This report provides information and analysis on the physical condition of the dam as of the report date. Information and analysis are based on visual inspection of the dam by the performing organization. The examination of documents and visual inspection of Swinging Bridge Dam and appurtenant structures did not reveal conditions which constitute an immediate hazard to life or property. The dam, however, has a number of deficiencies which if not remedied, may have the potential for developing into hazardous conditions. The discharge capacity of the spillway and the adjacent bedrock channel at both ends of the spillway is adequate to pass the Probable Maximum Flood (PMF = 47,000 cfs), without overtopping of the embankment portion of the dam, which is located approximately 1,000 feet southeast of the spillway. The maximum reservoir level during the PMF will be nearly equal to the top of the embankment at elevation 1080. The actual spillway capacity is only 39% of the PMF. However, the adjacent non-erodable bedrock channel at the north and south ends of the spillway will provide the additional capacity necessary to discharge the outflow from the PMF.
This report provides information and analysis on the physical condition of the dam as of the report date. Information and analysis are based on visual inspection of the dam by the performing organization. The examination of documents and visual inspection of Swinging Bridge Dam and appurtenant structures did not reveal conditions which constitute an immediate hazard to life or property. The dam, however, has a number of deficiencies which if not remedied, may have the potential for developing into hazardous conditions. The discharge capacity of the spillway and the adjacent bedrock channel at both ends of the spillway is adequate to pass the Probable Maximum Flood (PMF = 47,000 cfs), without overtopping of the embankment portion of the dam, which is located approximately 1,000 feet southeast of the spillway. The maximum reservoir level during the PMF will be nearly equal to the top of the embankment at elevation 1080. The actual spillway capacity is only 39% of the PMF. However, the adjacent non-erodable bedrock channel at the north and south ends of the spillway will provide the additional capacity necessary to discharge the outflow from the PMF.
National Dam Safety Program. Swinging Bridge Dam (Inventory Number NY 696). Delaware River Basin, Sullivan County, New York. Phase I Inspection Report
G. Koch (author)
1979
212 pages
Report
No indication
English