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Water-Year Summary for Site 465757098274401
July 1984 to current year.
WELL CHARACTERISTICS.--Drilled observation well, depth 263 ft, cased with 207 ft of 12-in diameter steel pipe, No. 8 slot screen set 207 to 257 ft below land-surface datum.
DATUM.--Altitude of land-surface datum is 1,480.36 ft above North American Vertical Datum of 1988 (surveyed by ND State Water Commission, accuracy 0.1 ft). Prior to October 1, 2017, land-surface datum was published as 1,479.1 ft above the National Geodetic Vertical Datum of 1929.
MEASURING POINT.--Top of casing 2.00 ft above land-surface datum.
EXTREMES FOR WATER YEAR 2014.--Highest water level, 62.92 ft below land-surface datum, January 11; lowest water level, 71.14 ft below land-surface datum, August 31.
EXTREMES FOR WATER YEAR 2015.--Highest water level, 62.68 ft below land-surface datum, February 7; lowest water level, 70.84 ft below land surface datum, October 11.
EXTREMES FOR WATER YEAR 2016.--Highest water level, 60.86 ft below land-surface datum, November 9; lowest water level, 69.00 ft below land surface datum, August 9.
EXTREMES FOR WATER YEAR 2017.--Highest water level, 48.47 ft below land-surface datum, September 19; lowest water level, 63.04 ft below land surface datum, October 16.