Description
Main TitleBasin-Factor Calibration for Ground-Water Recharge Estimation
PublisherN.J. Geological Survey
Date Created1999
Subject (Geographic)New Jersey
Subject (Geographic - Hierarchical)
Country: United States
State: New Jersey
Subject (Topical)water resources; water supply; ground water; recharge; ground-water recharge; basin factor; water resources
Description(This report is an Addendum to Charles et al, 1993, A method for evaluating ground-water-recharge areas in New Jersey) The New Jersey Geological Survey's methodology for estimating ground-water recharge on parcels of land 5 acres or larger (Charles and others, 1993) contains a calibration constant referred to as the "basin factor." As part of the method's development, recharge over the test area (in Morris County) was compared to an estimate of stream baseflow from the same area. The NJ Geological Survey has recently mapped ground-water recharge rates for a number of areas in New Jersey. This work allows for a comparsion of baseflow and recharge calculations. Table 1 lists baseflow from the sliding-interval and Posten methods at three gaging stations: the Whippany River at Morristown; the Rockaway River above the Boonton Reservoir; and the Manasquan River at Squankum. The table also shows estimated net ground-water recharge over the basins assuming different basin factors. It is clear that using a basin factor of 1.3 overestimates the Posten values of stream baseflow. A basin factor of 1.0 is more appropriate.
NoteTo cite this record, please use: Hoffman, J.L., 1999, Basin factor calibration for ground-water-recharge estimation: N.J. Geological Survey Technical Memorandum TM 99-1, Trenton, N.J., 2p.
NotePurpose: Update of basin-factor calibration for the New Jersey Geological Survey's ground-water recharge methodology
Data Life Cycle Event(s)
Date: 2000-12-20 00:00:00.0
Creator: Hoffman, Jeffrey L.
Organization NameNew Jersey Environmental Digital Library
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