New Hampshire

The USGS, in cooperation with NHDES, is using Geographic Information Systems (GIS) to produce a point-and-click tool for estimating low-flow characteristics of any unregulated stream at any locale in New Hampshire. Low-flow characteristics to be estimated include flow durations (the percentage of time that various flows are equalled or exceeded) and low-flow frequencies (such as the 7-day low flow discharge that occurs once on the average every 10 years or the 7Q10).

This study will also develop similar tools for estimating ground-water recharge in the various aquifers of the State. These tools will be used by the NHDES to administer such programs as the Large Groundwater Withdrawal Program and the Rivers Management and Protection Program.

 

--Robert Flynn (603) 226-7824 or rflynn@usgs.gov

 

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