USGS Water-Year Summary 2023
340316117174102 001S004W27M002S, 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 209.3 ft. Upper casing diameter 2.17 in; top of first opening 180 ft, bottom of last opening 203 ft.
DATUM - Land-surface datum is 992.12 ft above North American Vertical Datum of 1988. Measuring point: TOP OF STEEL CASING IN VAULT, 1.39 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.
PERIOD OF DAILY RECORD - February 2004 to September 2004, November 2004 to August 2005, October 2005 to current year.
EXTREMES FOR PERIOD OF RECORD -
Highest water level recorded, 81.71 ft below land surface, Oct. 31, 2005; lowest water level recorded, 116.50 ft below land surface, November 8, 2018.