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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2025
340800117235903 001N005W34D003S, Rialto Airport Cluster Well at Rialto, CA
California Coastal Basin aquifers
LOCATION - Lat 34°08'03.44", long 117°24'02.52" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 sec.34, T.1 N., R.5 W., San Bernardino County, CA, Hydrologic Unit 18070203, in SE 1/4 sec. 33, T.1N., R.5W., adjacent to Highland Avenue, at Linden Avenue, at the city of Rialto Airport, in Rialto.
REVISIONS HISTORY - Revisions: All data from 4/26/2024 to 6/5/2024 was revised due to corrections applied from an erroneous water level sounding.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 610 ft. Upper casing diameter 2 in; top of first opening 590 ft, bottom of last opening 610 ft.
DATUM - Land-surface datum is 1,465.17 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing, 0.75 ft below land-surface datum, Mar. 6, 2013 to Jun. 7, 2017; Black mark N side PVC casing, 4.47 ft below land-surface datum, Jul. 20, 2017 to present. Prior to 10/05/2022, Land-surface datum was 1,469.21 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 1992 to current year.
GAGE - Electronic data logger.
REMARKS - Record quality is variable and is dependent upon transducer stability and reliability. Records will range from poor to good. The Rialto Airport cluster wells consist of four continuous record groundwater wells, located in a common ground-level vault. The individual stations are well 1N/5W-34D1, station 340800117235901; well 1N/5W-34D2, station 340800117235902; well 1N/5W-34D3, station 340800117235903; and well 1N/5W-34D4, station 340800117235904.
PERIOD OF DAILY RECORD - June 1995 to August 2004, November to December 2004, July 2005 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 413.72 ft below land surface, Apr. 24, 2000; lowest water level recorded, 523.32 ft below land surface on October 12, 2024.
