USGS Water-Year Summary 2023
322339111170001 (D-12-10)12ccd1
Basin and Range basin-fill aquifers
LOCATION - Lat 32°23'39", long 111°17'00" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 SW 1/4 sec.12, T.12 S., R.10 E., Pima County, AZ, Hydrologic Unit 15050304, within the Avra Valley ground-water basin, approximately 10 mi west of Interstate 10, on Avra Valley Road. Owner: U.S. Geological Survey.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 1,010 ft. Upper casing diameter 20. in; top of first opening 185 ft, bottom of last opening 1,010 ft.
DATUM - Land-surface datum is 1,996.2 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF CASING, 1.00 ft above land-surface datum, Aug. 6, 1984, to present.
PERIOD OF RECORD - Aug. 1984 to current year.
GAGE - Water-level and compaction recorders.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 200.1 ft below land-surface datum, Feb. 27, 2010; lowest recorded, 300.8 ft below land-surface datum, Sept. 14, 1989.