National Dam Safety Program. Lake Tamarack Dam (NJ00301) Hudson River Basin, Tributary to Franklin Pond Creek, Sussex County, New Jersey. Phase I Inspection Report

摘要

This dam was inspected on 7 November 1979 by Anderson-Nichols and Company, Inc. under contract to the State of New Jersey. The State, under agreement with the U.S. Army Engineer District, Philadelphia, had this inspection performed in accordance with the National Dam Inspection Act, Public Law 92-367. Lake Tamarack Dam, a high hazard potential structure, is judged to be in poor overall condition. Also, the two spillways are considered seriously inadequate because a flow equivalent to ten percent of the Probable Maximum Flood (PMF) would cause the dam to be overtopped. The seriously inadequate spillways are assessed as an UNSAFE, non-emergency condition, until more detailed studies prove otherwise or corrective measures are completed. The classification of UNSAFE applied to a dam because of a seriously inadequate spillway is not meant to indicate the same degree of emergency as would be associated with an UNSAFE classification applied for a structural deficiency. It does mean, however, that based on an initial screening and preliminary computations, there appears to be a serious deficiency in spillway capacity so that if a severe storm were to occur, overtopping and failure of the dam would take place, significantly increasing the hazard of loss of life downstream from the dam.