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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
473442118162201 24N/36E-16A01
Columbia Plateau basaltic-rock aquifers
Wanapum Basalt Formation
Wanapum Basalt Formation
LOCATION - Lat 47°34'41.47", long 118°16'29.67" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 sec.16, T.24 N., R.36 E., Lincoln County, WA, Hydrologic Unit 17020013, near Davenport.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 117 ft. Upper casing diameter 10 in; top of first opening 75 ft, bottom of last opening 117 ft. Drilled Observation well, water-table.
DATUM - Land-surface datum is 2,371.45 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, 1.3 ft above land-surface datum, Sep. 8, 1971 to present.
PERIOD OF RECORD - September 1971 to current year.
REMARKS - Monitored depth interval is from 75 to 117 ft. Water level measured in 10 inch casing of an open hole that includes seven 1.25 inch piezometers used to measure water levels in deeper intervals. A pressure transducer and data logger were installed on Feb. 1, 1998. Water levels recorded at 1-hour intervals starting on Sept. 4, 2014. Previous water levels were recorded at 4-hour intervals.
EXTREMES FOR PERIOD OF RECORD - Highest static water level measured, 26.57 ft below land-surface datum, April 9, 1997; lowest measured, 52.2 ft below land surface datum, Sept. 23, 1992.
