New Jersey Water Science Center
Great Falls of the Passaic River at Paterson, N.J.
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Estimation of Low-flow Statistics for Ungaged Stream Sites on New Jersey Streams
Project Title: Estimation of Low-flow Statistics for Ungaged Stream Sites on New Jersey Streams
Phase 2 (preliminary)
Statement of Problem
To protect existing water supplies, to plan for future water supplies, and to protect and enhance the aquatic ecology, the NJDEP and USGS, through cooperative agreements, have been developing tools and strategies that can assist in allocating the water resources of the state among competing needs. One such tool is the New Jersey Hydroecological Assessment Tool (NJHAT) that can calculate 171 flow statistics at any stream site with a long term-daily streamflow record; statistics include both low- and high-flow hydrologic indices. The NJDEP has been developing streamflow requirements for water diversions that to a large extent are related to several low-flow statistics. The issue is to develop flow statistics at ungaged stream sites.
Strategy and Approach
The study would be conducted in two phases. In the first phase, approaches taken in previous studies will be identified and reviewed to determine if these approaches or some modification of them would produce a tool that would satisfy the needs of the NJDEP. Phase 1 would include the review of data needs and availability and the development of a detailed work plan for Phase 2.