National Dam Safety Program. Kemah Lake Dam (NJ00268). Delaware River Basin . Tributary to Paulins Kill, Sussex County, New Jersey. Phase I Inspection Report.
NEW JERSEY DEPT OF ENVIRONMENTAL PROTECTION TRENTON
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Hydraulic and hydrologic analyses indicate that the spillway is seriously inadequate. Discharge capacity of the spillway is not sufficient to pass the designated spillway design flood SDF without an overtopping of the dam, and dam failure would significantly increase the hazard downstream over that which would exist without dam failure. The SDF for Kemah Lake Dam is equal to one-half the probable maximum flood. The spillway is capable of passing approximately 11 percent of the probable maximum flood or 22 percent of the SDF. Therefore, the owner should engage a professional engineer experienced in the design and construction of dams in the near future to perform more accurate hydraulic and hydrologic analyses relating to spillway capacity. Based on the findings of the analyses, the need for and type of remedial measures should be determined and then implemented. The owner should, soon, develop an emergency action plan together with an effective warning system outlining actions to be taken by the operator to minimize downstream effects of an emergency at the dam.
- Hydrology, Limnology and Potamology
- Civil Engineering