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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
340321117153801 001S004W25E005S, Elmer Digneo Park Cluster Well, at Loma Linda, CA
California Coastal Basin aquifers
LOCATION - Lat 34°03'21.06", long 117°15'37.84" 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. 25, T.1 S., R.4 W. in Elmer Digneo Park, in the city of Loma Linda.
REVISIONS HISTORY - Data for June 16, 2017 through Aug. 14, 2017 was deleted upon further review when a faulty sensor was found to be giving erroneous data.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 285 ft. Upper casing diameter 2.17 in; top of first opening 255 ft, bottom of last opening 275 ft.
DATUM - Land-surface datum is 1,080.9 ft above North American Vertical Datum of 1988. Measuring point: TOP OF STEEL CASING IN VAULT, 1.33 ft below land-surface datum, Nov. 18, 2003 to present. Prior to 02/06/2023, the land-surface datum was 1,080.95 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 2004 to current year.
GAGE - Stand-alone In-Situ trolls.
REMARKS - Records rated good, except for other periods, as follows:
Dec. 4, 2015 through Oct. 2, 2016 are rated fair.
The Elmer Digneo Park cluster wells consist of three continuous record groundwater wells, located in a common ground-level vault. The individual stations are well 1S/4W-25E5, station 340321117153801; well 1S/4W-25E6, station 340321117153802 (discrete measurements only); and well 1S/4W-25E7, station 340321117153803.PERIOD OF DAILY RECORD - February 2004 to December 2004, September 2005 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 98.25 ft below land surface, Feb. 10, 2004; lowest water level measured, 185.43 ft. below land surface, Oct. 8, 2022.
