USGS Water-Year Summary 2024
293516098325501 AY-68-28-211
Edwards-Trinity aquifer system
Edwards and Associated Limestones
LOCATION - Lat 29°35'16", long 98°32'55" referenced to North American Datum of 1983, Bexar County, TX, Hydrologic Unit 12100301,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 300 ft. Upper casing diameter 4.5 in; top of first opening 220 ft, bottom of last opening 300 ft.
DATUM - Land-surface datum is 975 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 2.64 ft above land-surface datum, Nov. 24, 2008 to present; Top 0f casing, 2.50 ft above land-surface datum, Dec. 8, 2011 to present.
WATER-QUALITY RECORDS
WELL CHARACTERISTICS - Depth 300 ft. Upper casing diameter 4.5 in; top of first opening 220 ft, bottom of last opening 300 ft.
DATUM - Land-surface datum is 975 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 2.64 ft above land-surface datum, Nov. 24, 2008 to present; Top 0f casing, 2.50 ft above land-surface datum, Dec. 8, 2011 to present.
PERIOD OF RECORD - CHEMICAL DATA: Nov. 1998 to current year.
PESTICIDE DATA: Nov. 1998 to current year.
RADIOCHEMICAL DATA: Nov. 1998 to current year.
EXTREMES FOR PERIOD OF RECORD -
SPECIFIC CONDUCTANCE: Maximum, 698 micro siemens/cm, Feb 21, 2019; minimum, 548 micro siemens/cm, Dec 7, 2018.
pH: Maximum, 7.2 standard units, Oct 10, 2018; minimum, 6.8 standard units, May 11, 2019.
WATER TEMPERATURE: Maximum, 22.9 °C, Feb 4, 2019; minimum, 21.9°C, Multiple occurrences March-July, Dec. 19 2014, Nov. 06-07, March 10, April 13, 2016, Feb 7, 2019.
DISSOLVED OXYGEN: Maximum, 8.0 mg/L, Aug. 20,26, 2014; minimum, 1.1 mg/L, Sept. 22-23, 2014.