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USGS Water-Year Summary 2025
340559117194504 001S004W08E004S, Rialto Avenue Cluster Well at San Bernardino, CA
California Coastal Basin aquifers
LOCATION - Lat 34°05'59.71", long 117°19'48.68" referenced to North American Datum of 1983, San Bernardino County, CA, Hydrologic Unit 18070203, in Muscupiabe Grant, at the intersection of Rialto Avenue and Arrow Route, in San Bernardino.
REVISIONS HISTORY - Revisions: All data from 2/27/2024 to 6/5/2024 was revised due to corrections applied from erroneous water level soundings.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 333.9 ft. Upper casing diameter 2 in; top of first opening 310 ft, bottom of last opening 330 ft.
DATUM - Land-surface datum is 1,116.77 ft above North American Vertical Datum of 1988. Measuring point: TOP OF PVC CASING, 0.75 ft below land-surface datum, May 20, 2010 to present. Prior to October 07, 2023, Landâsurface datum is 1,116.76 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 1993 to current year.
GAGE - Electronic data logger.
REMARKS - The Rialto Avenue Cluster Wells consist of four continuous record groundwater wells, located in a common ground-level vault. The individual stations are station 340559117194501, well 1S/4W-8E1; station 340559117194502, well 1S/4W-8E2; station 340559117194503, well 1S/4W-8E3; and station 340559117194504, well 1S/4W-8E4.
PERIOD OF DAILY RECORD - June 1995 to May 2003, August 2003 to September 2004, November 2004 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 190.39ft below land surface, Mar. 13, 1996; lowest water level recorded, 235.49 ft below land surface, Jan. 18 and 20, 2023.
