USGS Water-Year Summary 2021
323527117050003 018S002W22E005S, Otay Trolley Cluster Well near Otay, CA
California Coastal Basin aquifers
LOCATION - Lat 32°35'27.62", long 117°05'00.51" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 NW 1/4 sec.22, T.18 S., R.2 W., San Diego County, CA, Hydrologic Unit 18070304,
WELL CHARACTERISTICS - Depth 560 ft. Upper casing diameter 1.94 in; top of first opening 540 ft, bottom of last opening 560 ft.
DATUM - Land-surface datum is 23.63 ft above North American Vertical Datum of 1988. Measuring point: Top of 2 inch PVC casing, black mark on southwest side (below LSD), 0.31 ft below land-surface datum, Mar. 15, 2008 to present; Top of concrete vault (above LSD), 0.6 ft above land-surface datum, Mar. 15, 2008 to present. Discrete water-level readings for NAVD88 and NGVD29 values were updated due to an incorrect offset that was originally applied. The changes were made to the values from the start of the record through May 14, 2021.
PERIOD OF RECORD - Water years 2008 to current year.
GAGE - Electronic data logger and pressure sensor.
PERIOD OF DAILY RECORD - August 2008 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest daily maximum water level recorded, 10.53 ft NAVD 88, Mar. 6, 2017; lowest daily minimum water level recorded, -30.02 ft NAVD 88, Aug. 15, 2018.