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USGS Water-Year Summary 2025
340927117242203 001N005W21K003S, Upper Linden Ponds Cluster Well at Rialto, CA
California Coastal Basin aquifers
LOCATION - Lat 34°09'27.54", long 117°24'24.70" 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 complex of reservoirs near the intersection of Locust and Riverside Avenues, in Rialto.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 472.1 ft. Upper casing diameter 3 in; top of first opening 435 ft, bottom of last opening 455 ft.
DATUM - Land-surface datum is 1,647.14 ft above North American Vertical Datum of 1988. Measuring point: MP A--2.00 ft above LSD, 2.0 ft above land-surface datum, Aug. 5, 1992 to Aug. 3, 1995; TOP OF PVC IN VAULT BELOW LSD, 0.94 ft below land-surface datum, Aug. 2, 1995 to present. Prior to October 02, 2023, Landâsurface datum is 1,647.84 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 1992 to current year.
GAGE - Electronic data logger.
REMARKS - The Upper Linden Ponds Cluster Wells consist of four continuous-record groundwater wells, located in three ground-level vaults. The individual stations are well 1N/5W-21K1, station 340927117242201; well 1N/5W-21K2, station 340927117242202; well 1N/5W-21K3, station 340927117242203; and well 1N/5W-21K4, station 340927117242204.
PERIOD OF DAILY RECORD - September 1995 to August 2004, November 2004 to February 2005, November 2005 to September 2006, June 2008 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 353.18 ft below land surface, Nov. 1, 2005; lowest water level recorded, 423.22 ft below land surface, November 2, 2018.
