USGS Water-Year Summary 2023
08155500 Barton Springs at Austin, TX
LOCATION - Lat 30°15'48", long 97°46'16" referenced to North American Datum of 1927, Travis County, TX, Hydrologic Unit 12090205, at ground-water well (YD 58-42-903), on right bank 0.4 mi upstream from Barton Springs Road bridge over Barton Creek, 0.7 mi upstream from mouth, and 1.8 mi southwest of the State Capitol Building in Austin.
DRAINAGE AREA - Not applicable.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Nov. 1894 to Apr. 1917 and Oct. 1918 to Feb. 1978 (discharge measurements only), May 1917 to Sept. 1918 (published as "Barton Creek"), Mar. 1978 to Sept. 1994 (daily mean discharge), Oct. 1994 to Sept. 1999 (discharge at 1200 hours), Oct. 1999 to current year.
GAGE -
Water-stage recorder. Satellite telemetry at station.
Datum of gage, at ground-water well (YD-58-42-903), is 412.008 ft NAVD88 based on a Level 2 Static GNSS survey processed through OPUS with Ref Frame NAD83 (2011)(EPOCH:2010.0000) ITRF2014 (EPOCH:2021.0977) and Geoid 18. The survey was completed 02/05/2021 while occupying a TRM surveyed with differential levels.
The previous datum of the gage was: 462.34 ft NGVD29 via levels.
May 1917 to Sept. 1918, nonrecording gage at site 1,000 ft downstream at different datum.
WATER-QUALITY RECORDS
PERIOD OF RECORD - CHEMICAL DATA: Nov. 1969, Dec. 1978 to current year.
BIOCHEMICAL DATA: May 1978 to current year.
BIOLOGICAL DATA: Nov. 1969, July 1978 to July 2003, Feb. 2007 to Mar. 2010.
RADIOCHEMICAL DATA: Jan. 1980 to May 1981.
STABLE ISOTOPES DATA: Nov. 2008 to Mar. 2010, Nov. 2011 to Dec. 2011.
PESTICIDE DATA: July 1978 to July 1982, Oct. 1984, June 1987 to Nov. 1993, May 2000 to current year.
ORGANICS, OTHER DATA: Feb. 2009 to Feb. 2010.
SEDIMENT DATA: May 1999 to Apr. 2010.
SEDIMENT CHEMISTRY DATA: May 2000 to Oct. 2004.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: June 2003 to current year.
pH: Oct. 2005 to current year.
WATER TEMPERATURE: June 2003 to current year.
DISSOLVED OXYGEN: July 2003 to current year.
TURBIDITY: June 2003 to current year. fDOM: Nov. 2019 to current year. NITRATE PLUS NITRITE: Dec. 2019 to current year.
COOPERATION - City of Austin, Austin, TX.
INSTRUMENTATION - Multi-parameter water-quality monitor.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 750 microsiemens/cm, Aug. 12, 2023; minimum, 129 microsiemens/cm, Oct. 13 2014.
pH: Maximum, 8.0 standard units, Oct. 13, 2013, Sep. 2, 2009; minimum, 6.5 standard units, June 18, 2009, June 26, 2013.
WATER TEMPERATURE: Maximum, 22.9 C, Aug. 10, 2021; minimum, 17.9C, Jan. 17, 2010.
DISSOLVED OXYGEN: Maximum, 8.3 mg/L, Jan. 17, 2010 and Oct. 13, 2013; minimum, 3.8 mg/L, Sep 17, 26, 2023.
TURBIDITY: Maximum, 690 FNU, Oct. 14, 2013; minimum, 0.0 FNU, on many days. fDOM: Maximum, 53.0 QSE, May 25, 2021; minimum, 2.14 QSE, Oct. 10, 2022. NITRATE PLUS NITRITE: Maximum, 1.82 mg/L, May 3, 2021; minimum, 0.99 mg/L, May 25, 2021.