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Water-Year Summary for Site USGS 324116117050802

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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.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
62611 Elevation, GW, NAVD88(Max.,Min.,Med.)  
72019 Water level, depth LSD(Max.,Min.,Med.)  

Water year 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
324116117050802 017S002W16Q010S, El Toyon Park Cluster Well near National City, CA
California Coastal Basin aquifers
LOCATION - Lat 32°41'16.06", long 117°05'08.15" referenced to North American Datum of 1983, San Diego County, CA, Hydrologic Unit 18070304, along North edge of park near curb, directly across the street from 2305 East 1st Street, National City.
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.
WELL CHARACTERISTICS - Depth 960 ft. Upper casing diameter 1.94 in; top of first opening 920 ft, bottom of last opening 960 ft.
DATUM - Land-surface datum is 109.21 ft above North American Vertical Datum of 1988. Measuring point: TOP OF PVC, 0.84 ft above land-surface datum, Jul. 15, 2003 to Oct. 16, 2005; Top of 2 inch PVC casing, black mark on west side (below LSD), 0.7 ft below land-surface datum, Oct. 15, 2005 to present; Top of concrete vault (above LSD), 0.6 ft above land-surface datum, Oct. 15, 2005 to May. 6, 2020.
PERIOD OF RECORD - Water year 2003 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. El Toyon Park Cluster Wells consist of five continuous record groundwater wells, located in a common ground-level vault.
PERIOD OF DAILY RECORD - December 2005 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest daily maximum water level recorded, 1.78 ft NAVD 88, Dec. 7, 2016; lowest daily minimum water level recorded, -42.85 ft NAVD 88, Sep. 30, 2019.