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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 2024
323915117055304 017S002W33D004S, Mile of Cars Cluster Well near National City, CA
California Coastal Basin aquifers
LOCATION - Lat 32°39'15.89", long 117°05'53.68" referenced to North American Datum of 1983, in sec.00, T.17 S., R.2 W., San Diego County, CA, Hydrologic Unit 18070304,
REVISIONS HISTORY -
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 18, 2021.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 280 ft. Upper casing diameter 1.94 in; top of first opening 260 ft, bottom of last opening 280 ft.
DATUM - Land-surface datum is 22.99 ft above North American Vertical Datum of 1988. Measuring point: Notch between black M and P on 2 inch pvc casing, 0.38 ft below land-surface datum, Jun. 26, 2005 to present; Top of concrete vault (above LSD), 0.5 ft above land-surface datum, Jun. 26, 2005 to May. 6, 2020. Prior to 12/09/2022, the land-surface datum was 23.04 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 2006 to current year.
GAGE - Electronic data logger and pressure sensor.
REMARKS - Sudden water-level changes may be attributed to nearby anthropogenic effects such as pumping and sampling. Mile of Cars Cluster Wells consist of five continuous record groundwater wells, located in a common ground-level vault.
PERIOD OF DAILY RECORD - November 2005 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest daily maximum water level recorded, 5.62 ft NAVD 88, Mar. 30, 2006; lowest daily minimum water level recorded, -9.89 ft NAVD 88, Sep. 21, 2022.
