USGS Water-Year Summary 2020
LOCATION - Lat 32°43'08.16", long 117°06'35.81" referenced to North American Datum of 1983, in SE 1/4 NE 1/4 SW 1/4 sec.05Q, T.17 S., R.2 W., San Diego County, CA, Hydrologic Unit 18070304,
- Revisions: Between 9/4/2019 and 12/9/2019 the incorrect conversion of input equation was used. The equation did not contain parenthesis so the mathematical order of operations was performed incorrectly. To fix this, the raw values from the EDL data were put into an Excel spreadsheet along with the correct equation to provide the correct WL in feet below LSD.
WELL CHARACTERISTICS - Depth 450 ft. Upper casing diameter 1.94 in; top of first opening 430 ft, bottom of last opening 450 ft.
DATUM - Land-surface datum is 84.7 ft above North American Vertical Datum of 1988. Measuring point: Black mark top of 2 inch PVC casing (below LSD), 0.65 ft below land-surface datum, Dec. 29, 2011 to present; Even level with top of vault directly over casing (above LSD), 0.5 ft above land-surface datum, Dec. 29, 2011 to present.
PERIOD OF RECORD - Water year 2012 to current year.
GAGE - Electronic data logger and pressure sensor.
PERIOD OF DAILY RECORD - January 2012 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest daily maximum water level recorded, 4.01ft NAVD 88, Sept. 17, 2012; lowest daily minimum water level recorded, -8.12 ft NAVD 88, March 4, 2021.