CURRENT WATER RESOURCES CONDITIONS IN NEW HAMPSHIRE

U.S. Department of the Interior Seal

September 2020

USGS New England Water Science Center, New Hampshire-Vermont Office

PROVISIONAL DATA: All data presented in this report are provisional and subject to revision.
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Monthly Surface Water Conditions MapMonthly Groundwater Conditions Map

 

SURFACE WATER
Station
Number
Station
Name
Drainage
Area (mi2)
Years Of
Record
Normal
Range (cfs)
Monthly
Mean (cfs)
Monthly
Mean (in)
Percentile
Class
01052500 Diamond River near Wentworth Location, NH1527970 - 183390.29 Much below normal
01064500 Saco River near Conway, NH385116210 - 4791520.44 Much below normal
01073500 Lamprey River near Newmarket, NH1858618.6 - 81.97.010.04 Much below normal
01076500 Pemigewasset River at Plymouth, NH622116284 - 7141610.29 Much below normal
01092000 Merrimack River near Goffs Falls below Manchester, NH3092831250 - 23306980.25 Low
01137500 Ammonoosuc River at Bethlehem Junction, NH87.68155.2 - 12236.40.46 Much below normal

 

GROUNDWATER
Station
Number
Station
Name
Years Of
Record
Normal
Range (ft)
Monthly
Median (ft)
Departure
From Monthly
Median (ft)
Percentile
Class
431540071452801 WCW 1 (Warner, NH)541 31.40 - 31.0032.010.81 Much below normal
442450071052301 SJW 2 (Shelburne, NH)231 6.53 - 4.507.491.90 Low
1 Daily Value Records and Field Readings
2 Daily Value Records Only

 

Flow or Water LevelPercentile RangeExplanation
Low0thThe monthly mean streamflow or median water level during this month is the lowest ever recorded during the period of record for this site.
Much below normal0th to 10thThe monthly mean streamflow or median water level during this month is less than the 10th percentile when compared to all of the months during the period of record for this site.
Below normal10th to 25thThe monthly mean streamflow or median water level during this month is between the 10th and 25th percentiles when compared to all of the months during the period of record for this site.
Normal25th to 75thThe monthly mean streamflow or median water level during this month is between the 25th and 75th percentiles when compared to all of the months during the period of record for this site.
Above normal75th to 90thThe monthly mean streamflow or median water level during this month is between the 75th and 90th percentiles when compared to all of the months during the period of record for this site.
Much above normal90th to 100thThe monthly mean streamflow or median water level during this month is greater than the 90th percentile when compared to all of the months during the period of record for this site.
High100thThe monthly mean streamflow or median water level during this month is the highest ever recorded during the period of record for this site.
431540071452801 WCW 1 (Warner, NH), September 2020 mean water level 32.01 feet 442450071052301 SJW 2 (Shelburne, NH), September 2020 mean water level 7.49 feet 01052500 Diamond River near Wentworth Location, NH, September 2020 mean streamflow 39 cfs 01064500 Saco River near Conway, NH, September 2020 mean streamflow 152 cfs 01073500 Lamprey River near Newmarket, NH, September 2020 mean streamflow 7.01 cfs 01076500 Pemigewasset River at Plymouth, NH, September 2020 mean streamflow 161 cfs 01092000 Merrimack River near Goffs Falls below Manchester, NH, September 2020 mean streamflow 698 cfs 01137500 Ammonoosuc River at Bethlehem Junction, NH, September 2020 mean streamflow 36.4 cfs