USGS Water-Year Summary for Site 425311070535801

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	Available Parameters
	00010 Temperature, water(Med.)
	00095 Specific cond at 25C(Med.)
	00300 Dissolved oxygen(Med.)
	00400 pH(Med.)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

425311070535801 NH-SGW 65

Sand and gravel aquifers (glaciated regions)
Ice-Contact Deposits, Pleistocene

LOCATION - Lat 42°53'12.00", long 70°53'57.00" referenced to North American Datum of 1983, Rockingham County, NH, Hydrologic Unit 01060003, is located in the Riley Wellfield at the Seabrook Water Department in Seabrook. Owner: Town of Seabrook.

REVISIONS HISTORY -

pH record was deleted from 2014-10-01 to 2015-01-12 due to failing probe. The period had originally been retained but obvious outlier when seen over the entire record through 2018.

Specific Conductance record from 2014-07-01 to 2014-11-13 was adjusted. One Set 2 correction was removed during that period and another was adjusted to correct for an erroneous calibration.

Dissolved Oxygen record from 2017-06-13 to 2018-02-12 was adjusted by removing the initial high values after the pump came on.

GROUNDWATER RECORDS

WELL CHARACTERISTICS - Depth 83 ft. Upper casing diameter 24 in; top of first opening 73 ft, bottom of last opening 83 ft.

WATER-QUALITY RECORDS

WELL CHARACTERISTICS - Depth 83 ft. Upper casing diameter 24 in; top of first opening 73 ft, bottom of last opening 83 ft.

PERIOD OF RECORD - January 2014 to current year.

INSTRUMENTATION - Ex-situ monitor located at the well head. Monitor operated during periods when the well is purged only.

REMARKS -

WATER YEAR 2015: Water temperature, specific conductance, and pH records are good. Dissolved oxygen records are fair.

WATER YEAR 2016: Specific conductance, and pH records are good. Dissolved oxygen and water temperature records are fair.

WATER YEAR 2017: Specific conductance, and pH records are good. Water temperature records are fair. Dissolved Oxygen records are poor.