USGS Water-Year Summary 2024
413130100531202 18N 31W16DDDB2 Tryon2
High Plains aquifer
Windblown Sand Deposits, Undifferentiated
LOCATION - Lat 41°31'30.24", long 100°53'18.12" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 SE 1/4 sec.16, T.18 N., R.31 W., McPherson County, NE, Hydrologic Unit 10200101,
REVISIONS HISTORY - Revised extreme highest water levels for period of record prior to Water Year 2014. Water Years 2007-2012, highest water level, 103.97 ft below land-surface datum, October 16, 2006. Water Year 2013, highest water level, 103.80 ft below land-surface datum, September 25, 2013.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 130 ft. Upper casing diameter 2.50 in; top of first opening 120 ft, bottom of last opening 130 ft.
DATUM - Land-surface datum is 3,219.69 ft above North American Vertical Datum of 1988. Measuring point: Measured MP is mark on shelf of gage shelter, 3.38 ft above land-surface datum, Sep. 21, 2006 to present.
PERIOD OF RECORD - September 2006 to current year. Tryon2 is the replacement for the Tryon recorder well, but the record is not considered equivalent.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 88.64 ft below land-surface datum, September 16, 2022; lowest, 105.86 ft below land surface datum, December 4, 2010.