USGS Water-Year Summary for Site 340316117174103

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	Available Parameters
	62611 Elevation, GW, NAVD88(Med.,Max.,Min.)
	72019 Water level, depth LSD(Max.,Min.,Med.)

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Water year 2025: 2025-10-01 to 2026-09-30

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USGS Water-Year Summary 2025

340316117174103 001S004W27M003S, Rich Dauer Park Cluster Well, at Colton, CA

California Coastal Basin aquifers

LOCATION - Lat 34°03'16.09", long 117°17'41.35" referenced to North American Datum of 1983, in sec.00, T.1 S., R.4 W., San Bernardino County, CA, Hydrologic Unit 18070203, in sec. 27, T.1 S., R.4 W, in northeast corner of Rich Dauer Park, approximately 95 ft west of Torrey Pines Drive, and 17 ft south of Cottonwood Drive, in the city of Colton.

REVISIONS HISTORY - Elevation data from Dec. 1 2022 through February 6, 2023 was revised due to LSD updates.

GROUNDWATER RECORDS

WELL CHARACTERISTICS - Depth 154.5 ft. Upper casing diameter 2.17 in; top of first opening 125 ft, bottom of last opening 145 ft.

DATUM - Land-surface datum is 992.12 ft above North American Vertical Datum of 1988. Measuring point: TOP OF STEEL CASING IN VAULT, 1.27 ft below land-surface datum, Nov. 18, 2003 to present. Prior to 12/01/2022, the land-surface datum was 992.17 ft above North American Vertical Datum of 1988.

PERIOD OF RECORD - Water year 2004 to current year.

GAGE - Electronic data logger.

REMARKS - Records rated good, except for the following periods, as noted:

     April 13, 2016 through Oct. 2, 2016; rated poor.

The Rich Dauer Park cluster wells consist of three continuous record groundwater wells, located in a common ground-level vault. The individual stations are well 1S/4W-27M1, station 340316117174101; well 1S/4W-27M2, station 340316117174102; and well 1S/4W-27M3, station 340316117174103.

PERIOD OF DAILY RECORD - February 2004 to October 2005, December 2005 to current year.

EXTREMES FOR PERIOD OF RECORD -

Highest water level recorded, 73.37 ft below land surface, July 1, 2006; lowest water level recorded, 96.48 ft below land surface, Jan. 01, 2019.