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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
330514116582901 012S001W34L002S, Santa Ysabel Cluster Well near San Pasqual, CA
California Coastal Basin aquifers
LOCATION - Lat 33°05'14.44", long 116°58'29.12" referenced to North American Datum of 1983, in sec.34L, T.12 S., R.1 W., San Diego County, CA, Hydrologic Unit 18070304,
REVISIONS HISTORY - Prior to 6/30/2022 discrete measurements displayed in NAVD88 and NGVD29 were displayed using a historic land surface elevation (400ft NGVD29) and not the updated 402.23 NAVD88. Water level from 3/8/2023 was updated to latest datum elevation.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 340 ft. Upper casing diameter 1.94 in; top of first opening 280 ft, bottom of last opening 340 ft.
DATUM - Land-surface datum is 401.45 ft above North American Vertical Datum of 1988. Measuring point: Black mark on NW side, top of 2 inch PVC casing (below LSD), 0.03 ft below land-surface datum, Jul. 27, 2011 to present; Even level with top of vault directly over casing above lsd, 0.5 ft above land-surface datum, Jul. 27, 2011 to May. 6, 2020; unknown, 0.03 ft below land-surface datum, Feb. 27, 2013 to May. 6, 2020. Prior to 3/8/2023 land-surface datum is 402.23 ft above North American Vertical Datum of 1988.
PERIOD OF RECORD - Water year 2011 to current year.
GAGE - Electronic data logger and pressure sensor.
REMARKS - Records rated good. Sudden water-level changes may be attributed to anthropogenic effects such as pumping and sampling. San Pasqual Wells consists of three continuous groundwater wells, located in a common ground-level vault.
PERIOD OF DAILY RECORD - April 2011 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest daily maximum water level recorded, 391.33 ft NAVD 88, May 20, 2011; Lowest daily minimum water level recorded, 315.46 ft NAVD 88, Nov. 28, 2018.
