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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2025
340633117174004 001S004W03N004S, Feldheym Library Cluster Well at San Bernardino, CA
California Coastal Basin aquifers
LOCATION - Lat 34°06'33.37", long 117°17'39.91" 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. 4, T.1 S., R.4 W., in the southeastern-most parking lot of Feldheym Municipal Public Library in the city of San Bernardino.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 310.2 ft. Upper casing diameter 2.17 in; top of first opening 310 ft, bottom of last opening 330 ft.
DATUM - Land-surface datum is 1,062.14 ft above North American Vertical Datum of 1988. Measuring point: TOP OF STEEL CASING IN VAULT, 1.94 ft below land-surface datum, Nov. 18, 2003 to present. Prior to October 3, 2022, Land-surface datum is 1062.29 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 2004 to current year.
GAGE - Electronic data logger.
REMARKS - The Feldheym cluster wells consist of six continuous record groundwater wells, located in two ground-level vaults ("deep" and "shallow"). The individual stations are well 1S/4W-3N1, station 340633117174001; well 1S/4W-3N2, station 340633117174002; well 1S/4W-3N3, station 340633117174003; well 1S/4W-3N4, station 340633117174004; well 1S/4W-3N5, station 340633117174005; and well 1S/4W-3N6, station 340633117174006.
PERIOD OF DAILY RECORD - January 2004 to August 2005, November 2005 to April 2007, June 2007 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 103.84 ft below land surface, Mar. 4, 2004; lowest water level recorded, 212.14 ft below land surface, October 12, 2024.
