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National Dam Inspection Program. Bradley Lake Dam (Inventory NY 00755). Lower Hudson River Basin. City of Troy Rensselaer County, New York. Phase I Inspection Report
Hydrologic and hydraulic analysis indicates that maximum spillway discharge capacity is only about 13% of the PMF peak outflow. The 1/2 PMF would overtop the earth embankment and would probably cause failure. Therefore, in accordance with Corps of Engineers' screening criteria for review of spillway adequacy, spillway capacity is considered 'seriously inadequate' and the dam is assessed as 'unsafe, non-emergency'. The classification of 'unsafe' applied to a dam because of a seriously inadequate spillway is not meant to connote the same degree of emergency as would be associated with an 'unsafe' classification applied for a structural deficiency. It does mean that there appears to be a serious deficiency in spillway capacity and if a severe storm were to occur, overtopping and failure of the dam could take place, significantly increasing the hazard to loss of life downstream of the dam. Therefore, it is recommended that within 3 months after receipt of this report by the Owner, a detailed hydrologic and hydraulic analysis be started to better assess spillway capacity. This should include a more accurate determination of the site specific characteristics of the watershed. Within 18 months after receipt of this report by the Owner, any appropriate remedial work should be completed.
National Dam Inspection Program. Bradley Lake Dam (Inventory NY 00755). Lower Hudson River Basin. City of Troy Rensselaer County, New York. Phase I Inspection Report
Hydrologic and hydraulic analysis indicates that maximum spillway discharge capacity is only about 13% of the PMF peak outflow. The 1/2 PMF would overtop the earth embankment and would probably cause failure. Therefore, in accordance with Corps of Engineers' screening criteria for review of spillway adequacy, spillway capacity is considered 'seriously inadequate' and the dam is assessed as 'unsafe, non-emergency'. The classification of 'unsafe' applied to a dam because of a seriously inadequate spillway is not meant to connote the same degree of emergency as would be associated with an 'unsafe' classification applied for a structural deficiency. It does mean that there appears to be a serious deficiency in spillway capacity and if a severe storm were to occur, overtopping and failure of the dam could take place, significantly increasing the hazard to loss of life downstream of the dam. Therefore, it is recommended that within 3 months after receipt of this report by the Owner, a detailed hydrologic and hydraulic analysis be started to better assess spillway capacity. This should include a more accurate determination of the site specific characteristics of the watershed. Within 18 months after receipt of this report by the Owner, any appropriate remedial work should be completed.
National Dam Inspection Program. Bradley Lake Dam (Inventory NY 00755). Lower Hudson River Basin. City of Troy Rensselaer County, New York. Phase I Inspection Report
K. J. Male (author) / W. M. Smith (author)
1981
138 pages
Report
No indication
English