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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01096508 MERRIMACK RIVER AT NASHUA, NH
LOCATION - Lat 42°45'48", long 71°26'36" referenced to North American Datum of 1927, Hillsborough County, NH, Hydrologic Unit 01070002, at Nashua, at downstream side of State Highway 111 and 0.25 mi downstream from the Nashua River.
DRAINAGE AREA - 3,480 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Elevation: December 2021 to current year.
GAGE - Water-stage recorder. Datum of gage is North American Vertical Datum of 1988.
COOPERATION - Gage operated in cooperation with the City of Nashua, NH.
REMARKS - Water-surface elevation is determined by radar. Elevation data will read higher when ice is present on the water surface.
