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USGS Water-Year Summary 2025
340433117171201 001S004W22B009S, Treatment Plant Cluster Well, at San Bernardino, CA
California Coastal Basin aquifers
LOCATION - Lat 34°04'33.31", long 117°17'12.08" 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. 22, T.1 S., R.4 W., approximately 1,300 ft south of Orange Show Road (at the intersection with Arrowhead Avenue), and 100 ft west of the right bank of the Twin Creek flood control channel, in the eastern-most portion of the Chandler Water Reclamation Plant, city of San Bernardino.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 160.5 ft. Upper casing diameter 2.17 in; top of first opening 140 ft, bottom of last opening 150 ft.
DATUM - Land-surface datum is 996.45 ft above North American Vertical Datum of 1988. Measuring point: TOP OF STEEL CASING IN VAULT, 1.8 ft below land-surface datum, Nov. 18, 2003 to Dec. 10, 2004; Top of 2 inch steel casing in vault, 0.82 ft below land-surface datum, Dec. 9, 2004 to present. Prior to 10/06/2022, the land-surface datum was 995.99 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 2004 to current year.
GAGE - Instrumentation consists of one In-Situ, 30 psi, vented, submersible transducer.
REMARKS - Records rated good. The Treatment Plant cluster wells consist of one continuous record groundwater well and two observation only wells, located in a common ground-level vault. The individual stations are well 1S/4W-22B9, station 340433117171201; well 1S/4W-22B10, station 340433117171202 (discrete measurements only); and well 1S/4W-22B11, station 340433117171203 (discrete measurements only).
PERIOD OF DAILY RECORD - January 2004 to September 2004, November 2004 to May 2005, September 2006 to current year.
EXTREMES FOR PERIOD OF RECORD -
Highest water level recorded, 46.6 ft below land surface, Mar. 4, 2004; lowest water level recorded, well dry after August 9th, 2021.
