USGS Water-Year Summary 2020
323313117033904 019S002W02C010S, Tijuana River Valley Cluster Well near San Ysidro, CA
California Coastal Basin aquifers
LOCATION - Lat 32°33'13.12", long 117°03'41.77" referenced to North American Datum of 1983, San Diego County, CA, Hydrologic Unit 18070305,
WELL CHARACTERISTICS - Depth 600 ft. Upper casing diameter 2 in; top of first opening 580 ft, bottom of last opening 600 ft.
DATUM - Land-surface datum is 45.26 ft above North American Vertical Datum of 1988. Measuring point: Top of concrete vault (above LSD), 0.10 ft above land-surface datum, Jun. 15, 1995 to present; Top of 2 inch PVC casing, black mark on west side (below LSD), 0.36 ft below land-surface datum, May 24, 2010 to present.
PERIOD OF RECORD - Water years 1995-96, 2005 to current year. All computed unit values after July 21, 2014 are flagged as "Value is affected by unspecified reasons".
GAGE - Electronic data logger and pressure sensor.
PERIOD OF DAILY RECORD - May 2007 to current year. Daily values produced after July 21, 2014 are flagged "Value was computed from affected unit values" because of the unknown response time of the well.
EXTREMES FOR PERIOD OF RECORD - Highest daily maximum water level recorded, 45.16 ft NAVD 88, Feb. 27, 2017; lowest daily minimum water level recorded, 24.23 ft NAVD 88, Dec. 15, 2009.