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National Dam Safety Program. New Waterville Reservoir Dam (Inventory Number N.Y. 195), Mohawk River Basin, Oneida County, New York. Phase I Inspection Report,

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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 Phase I inspection of the New Waterville Reservoir did not indicate conditions which would constitute an immediate hazard to human life or property. The hydrologichydraulic analysis establishes the spillway capacity as 30 percent of the Probable Maximum Flood PMF. The dam will be overtopped by 0.6 feet by the PMF and 0.3 feet under the 12 PMF. However, an analysis of a failure of the dam under the 12 PMF indicates that the downstream hazard to loss of life will not be significantly increased from that which would occur just prior to a dam failure. Therefore, the spillway is assessed as inadequate according to the Corps of Engineers screening criteria. An investigation should be started within 3 months to determine the source of the seepage near the toe of the embankment at the left of the gatehouse. Remedial work should be undertaken depending on the results of this investigation. This work should be completed within 18 months. Author

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering

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