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Water-Year Summary for Site 461935118081501

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
72019 Water level, depth LSD(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
461935118081501 10N/37E-23R01
Columbia Plateau basaltic-rock aquifers
Grande Ronde Basalt Formation
LOCATION - Lat 46°19'34.34", long 118°08'18.81" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 sec.23, T.10 N., R.37 E., Columbia County, WA, Hydrologic Unit 17070102, near Dayton.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 172.5 ft. Upper casing diameter 6 in; top of first opening 103 ft, bottom of last opening 172.5 ft.
DATUM - Land-surface datum is 1,402.74 ft above North American Vertical Datum of 1988. Measuring point: Top of casing on south side under pump, 0.5 ft above land-surface datum, Jun. 4, 1968 to Nov. 17, 1971; Hole in side of casing, 0.3 ft above land-surface datum, Nov. 17, 1971 to Nov. 21, 1973; Hole on east side well casing, 0.5 ft below land-surface datum, Sep. 8, 1997 to Oct. 26, 2011; MP is 3 file marks on top of 6 inch casing, 1.47 ft above land-surface datum, Oct. 25, 2011 to present.
PERIOD OF RECORD - June 1968 to November 1973. September 1997 to current year.
GAGE - Periodic measurements using electric sounder tape and chalked steel tape from June 1968 to November 1973 and September 1997 to current year; electronic datalogger 15-minute interval November 2011 to current year.
EXTREMES FOR PERIOD OF RECORD -

Highest measured water level, 32.2 ft below land-surface datum, July 30, 1969; lowest measured water level, 41.28 ft below land-surface datum, June 25, 1968.

Highest instantaneous recorded water level, 29.82 ft below land-surface datum, April 16, 2017; lowest instantaneous recorded, 39.62 ft below land-surface datum, December 17, 2021 and January 1, 2022.

Highest daily recorded water level, 29.93 ft below land-surface datum, April 16, 2017; lowest daily recorded water level, 39.59 ft below land-surface datum, January 1, 2022.