National Dam Safety Program. Panama Dam (Inventory Number NY 784) Allegheny River Basin Chautauqua County. Phase I Inspection Report,
NEW YORK STATE DEPT OF ENVIRONMENTAL CONSERVATION ALBANY
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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 the visual inspection of Panama Dam did not reveal conditions which constitute an immediate hazard to human life or property. However, the dam has some deficiencies which require additional studies to further evaluate conditions affecting the dam. Using the Corps of Engineers Screening Criteria for the initial review of spillway adequacy, it has been determined that the embankment would be overtopped for all storms in excess of 5 of the PMF Probable Maximum Flood. This determination has been confirmed by the overtopping of the dam during the September 14, 1979 storm, which resulted in the need for evacuation of Panama Village residents and the closing of NYS Route 474 due to extensive erosion. The spillway is therefore, adjudged as 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.
- Civil Engineering