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National Dam Safety Program. Tyrone Power Company Dam (Inventory Number NY 454), Chemung River Basin, Schuyler County, New York. Phase I Inspection Report,

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Evaluation of the existing conditions did not reveal any conditions which constitute an immediate hazard to human life or property. However, the dam was found to have some serious deficiencies which require further evaluation and implementation of remedial measures. The dam consists of a concrete overflow spillway section flanked by a nonoverflow concrete wall on the right abutment and an earth embankment on the left abutment. Recenty, the downstream slope of the earth embankment had been excavated to a depth of approximately 20 feet from the crest of the earth embankment section for the purpose of installing a hydroelectric generating facility. This facility is presently under construction. Constructed portions include a partially complete concrete retaining wall along the downstream face of the earth embankment and a concrete foundation for a waterwheel at the base of the retaining wall. Configuration and construction of the completed facilities are not considered to be in conformance with generally accepted engineering practice. No reference was found to indicate that any engineering analysis was conducted to size the structural components of the facility under construction. Although the completed portions do not show major signs of distress, continued stability of these facilities is considered to be questionable. Therefore, the design and construction of the existing and proposed modifications to the dam should be more completely evaluated by a professional engineer. In addition, the stability of the spillway section was found to be marginal, requiring further investigation.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering

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