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USGS Water-Year Summary 2025
340814117253503 001N005W29Q003S, San Bernardino County Landfill Cluster Well near Rialto, CA
California Coastal Basin aquifers
LOCATION - Lat 34°08'14.68", long 117°25'37.13" referenced to North American Datum of 1983, in SW 1/4 SE 1/4 sec.29, T.1 N., R.5 W., San Bernardino County, CA, Hydrologic Unit 18070203, in the vicinity of a county landfill complex, on West Casmalia Street, between Sierra and Alder Avenues, in Rialto.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 644.3 ft. Upper casing diameter 2 in; top of first opening 640 ft, bottom of last opening 660 ft.
DATUM - Land-surface datum is 1,544.07 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing, 1.52 ft below land-surface datum, Jan. 7, 1994 to present. Prior to 10/06/2022, Land-surface datum was 1,543.99 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 1994 to current year.
GAGE - Electronic data logger.
REMARKS - The San Bernardino County Landfill Cluster Wells consist of four continuous record groundwater wells and one observation-only well. All are located in a common ground-level vault. The individual stations are well 1N/5W-29Q1, station 340814117253501; well 1N/5W-29Q2, station 340814117253502; well 1N/5W-29Q3, station 340814117253503; well 1N/5W-29Q4, station 340814117253504; and well 1N/5W-29Q5, station 340814117253505 (discrete measurements only).
PERIOD OF DAILY RECORD - January 1996 to November 2003, September 2006 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 475.75 ft below land surface, Mar. 15 and 16, 2000; lowest water level recorded, 585.78 ft below land surface, October 28, 2022.
