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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 2024
340716117230605 001S005W03A007S, Cactus Reservoir Cluster Well at Rialto, CA
California Coastal Basin aquifers
LOCATION - Lat 34°07'16.10", long 117°23'06.22" referenced to North American Datum of 1983, in sec.03, T.1 S., R.5 W., San Bernardino County, CA, Hydrologic Unit 18070203, in City of Rialto Well No. 4/Cactus Reservoir complex, in Rialto.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 418.1 ft. Upper casing diameter 1.94 in; top of first opening 400 ft, bottom of last opening 420 ft.
DATUM - Land-surface datum is 1,357.5 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC in vault, 0 ft above land-surface datum, Jul. 30, 2005 to present. Prior to October 6th, 2022, Land-surface datum is 1,357.50 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 2008 to current year.
GAGE - Electronic data logger.
REMARKS - The Cactus Reservoir cluster wells consist of six continuous record groundwater wells, located in a common ground-level vault. The individual stations are well 1S/5W-3A3, station 340716117230601; well 1S/5W-3A4, station 340716117230602; well 1S/5W-3A5, station 340716117230603; well 1S/5W-3A6, station 340716117230604; well 1S/5W-3A7, station 340716117230605; and well 1S/5W-3A8, station 340716117230606.
PERIOD OF DAILY RECORD - July 2008 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 367.78 ft below land surface, July 10th, 2008; lowest water level measured, 416.42 on October 19 and 20, 2024.
