USGS Water-Year Summary 2023
LOCATION - Lat 32°15'17", long 110°57'18" referenced to North American Datum of 1927, Pima County, AZ, Hydrologic Unit 15050302, within the Tucson ground-water basin, between Park Avenue and Mountain Avenue on Mitchell Street at Mitchell Park. Owner: U.S. Geological Survey.
WELL CHARACTERISTICS - Depth 808 ft. Upper casing diameter 6. in; top of first opening 790 ft, bottom of last opening 808 ft.
DATUM - Land-surface datum is 2,395 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF CASING, 1.5 ft above land-surface datum, Sep. 27, 1982, to present; BOTTOM OF HOLE IN EXTENSOMETER PIPE, 1.90 ft above land-surface datum, Mar. 13, 1993, to present.
PERIOD OF RECORD - Sept. 1982 to current year.
GAGE - Water-level and compaction recorders.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 174.42 ft below land-surface datum, Dec. 1, 1982; lowest recorded, 254.4 ft below land-surface datum, May 11, 12, 2006.