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USGS Water-Year Summary 2025
340914117234902 001N005W22N002S, Lower Linden Ponds Cluster Well at Rialto, CA
California Coastal Basin aquifers
LOCATION - Lat 34°09'14.36", long 117°23'53.23" referenced to North American Datum of 1983, in sec.00, T.1 N., R.5 W., San Bernardino County, CA, Hydrologic Unit 18070203, in Rancho Muscupiabe Grant, in a West San Bernardino Valley Water District filtration plant, on North Riverside Avenue, between Cedar and Linden Avenues, in Rialto.
REVISIONS HISTORY - Depth to groundwater levels from December 1, 2023, at 07:15 to April 8, 2024, at 07:15 were revised on June 11, 2025 by reverett. The discrete measurement on February 26, 2024, was corrected from 340.84 to 340.60 to feet below land surface to account for the -0.24 tape correction that was not initially applied. As a result, the time-series data was calibrated to the corrected discrete measurement.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 738.4 ft. Upper casing diameter 3 in; top of first opening 720 ft, bottom of last opening 740 ft.
DATUM - Land-surface datum is 1,586.7 ft above North American Vertical Datum of 1988. Measuring point: MP A --This is original MP above LSD, 2.1 ft above land-surface datum, Nov. 18, 1992 to present; MP B--Top of pvc at LSD, 0 ft above land-surface datum, Nov. 18, 1992 to present; TOP OF BLACK PVC IN VAULT, 0.62 ft below land-surface datum, May 2, 2008 to present. “Prior to October 3, 2023 Landâsurface datum is 1586.62 feet above North American Vertical Datum of 1988.”
PERIOD OF RECORD - Water year 1992 to 2004, 2006 to current year.
GAGE - Electronic data logger.
REMARKS - Casings can become flooded during periods of rainfall runoff. The Lower Linden Ponds Cluster Wells consist of five continuous record and one observation-only groundwater wells, located in two ground level vaults. The individual stations are well 1N/5W-22N1, station 340914117234901; well 1N/5W-22N2, station 340914117234902; well 1N/5W-22N3, station 340914117234903; well 1N/5W-22N4, station 340914117234904; well 1N/5W-22N5, station 340914117234905; and well 1N/5W-22N6, station 340914117234906 (discrete measurements only).
PERIOD OF DAILY RECORD - May 1995 to March 1998, January 1999 to May 2003, July 2003 to March 2004, February 2006, November 2006 to December 2007, June 2008 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 278.10 ft below land surface, June 29, 1993; lowest water level recorded, 355.44 ft below land surface, March 6, 2017. Periods of flooded data are not represented in these extremes.
