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USGS Water-Year Summary 2025
340633117174003 001S004W03N003S, Feldheym Library Cluster Well at San Bernardino, CA
California Coastal Basin aquifers
LOCATION - Lat 34°06'33.52", long 117°17'39.98" 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 546.8 ft. Upper casing diameter 2.17 in; top of first opening 530 ft, bottom of last opening 550 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, 1.54 ft below land-surface datum, Nov. 18, 2003 to May. 20, 2020; TOP OF STELL CASING IN VAULT, 1.52 ft below land-surface datum, May. 19, 2020 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 - February 2004, May 2004 to February 2005, August 2005 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 138.99 ft below land surface, April. 9, 2006; lowest water level recorded, 249.06 ft below land surface, October 8, 2022.
