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Water-Year Summary for Site 461838097553402
June 1982 to current year.
WELL CHARACTERISTICS.--Drilled observation well, depth 60 ft, cased with 34 ft of 5-in diameter plastic pipe, No. 15 slot screen set 34 to 38 ft. below land-surface datum.
INSTRUMENTATION.--Measured using a chalked steel tape or a graduated electric tape.
DATUM.--Altitude of land-surface datum is 1,316.37 ft above North American Vertical Datum of 1988 (surveyed by ND State Water Commission, accuracy 0.1 feet). Prior to October 1, 2017, land-surface datum was published as 1,315.3 ft above the National Geodetic Vertical Datum of 1929.
MEASURING POINT.--Top of casing 1.50 ft above land-surface datum.
EXTREMES FOR WATER YEAR 2014.--Highest water level, 3.76 ft below land-surface datum, June 27; lowest water level, 5.89 ft below land-surface datum, March 7, 8.
EXTREMES FOR WATER YEAR 2015.--Highest water level, 3.79 ft below land-surface datum, June 14; lowest water level, 6.26 ft below land-surface datum, September 30.
EXTREMES FOR WATER YEAR 2016.--Highest water level, 5.20 ft below land-surface datum, May 31; lowest water level, 7.44 ft below land-surface datum, August 9, 10.
EXTREMES FOR WATER YEAR 2017.--Highest water level, 4.32 ft below land-surface datum, April 18; lowest water level, 7.16 ft below land-surface datum, September 17.