USGS Water-Year Summary 2020
08156800 Shoal Creek at 12th Street, Austin, TX
LOCATION - Lat 30°16'35", long 97°45'00" referenced to North American Datum of 1927, Travis County, TX, Hydrologic Unit 12090205, on left bank at downstream side of bridge at 12th Street, and 0.6 mi west of the State Capitol Building in Austin.
DRAINAGE AREA - 12.3 mi².
PERIOD OF RECORD - Nov. 1974 to Mar. 1975 (periodic discharge measurements, and associated peak discharges along with annual maximum), Apr. 1975 to Sept. 1984 (peak discharges greater than base discharge), Oct. 1984 to current year.
GAGE - Water-stage recorder. Datum of gage is 455.33 ft above NGVD of 1929. Satellite telemeter at station.
PERIOD OF RECORD - CHEMICAL DATA: Jan. 1975 to Dec. 2002, Oct. 2004 to current year.
BIOCHEMICAL DATA: Jan. 1975 to Dec. 2002, Oct. 2004 to current year.
RADIOCHEMICAL DATA: Apr. 1980 to June 1981.
PESTICIDE DATA: Jan. 1975 to Feb. 1985, Jan. 1993 to May 1996, Mar. 2002 to June 2002, Jan. 2007 to May 2008.
SEDIMENT DATA: Mar. 1999 to Mar. 2010.
INSTRUMENTATION - Stage-activated automatic sampler.