USGS Water-Year Summary 2021
340130117054902 002S002W04L003S, Dunlap Acres Cluster Well at Yucaipa, CA
California Coastal Basin aquifers
LOCATION - Lat 34°01'29.92", long 117°05'49.53" referenced to North American Datum of 1983, San Bernardino County, CA, Hydrologic Unit 18070203, south of Avenue E, and between 14th and 15th Streets, in Yucaipa.
- Data from Aug. 14, 2011 to Feb. 28, 2015 was deleted because the well had lost aquifer connectivity.
WELL CHARACTERISTICS - Depth 820.3 ft. Upper casing diameter 1.94 in; top of first opening 830 ft, bottom of last opening 850 ft.
DATUM - Land-surface datum is 2,069.97 ft above North American Vertical Datum of 1988. Measuring point: Top of concrete vault (above LSD), 0.50 ft above land-surface datum, May 31, 2004 to Aug. 1, 2019; Top of 2 inch PVC casing, black mark on northeast side (below LSD), 0.85 ft below land-surface datum, May 31, 2004 to present.
PERIOD OF RECORD - Water year 2004 to current year.
GAGE - Electronic data logger and pressure sensor until March 2015. Periodic Depth-To-Water readings until current.
PERIOD OF DAILY RECORD - December 2007 to March 2015.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 221.93 ft below land surface, Sept. 8, 2005; lowest water level recorded, 340.91 ft below land surface, Oct. 25, 2007.