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Peak Streamflow for Texas

USGS 08159000 Onion Ck at US Hwy 183, Austin, TX

Travis County, Texas
Hydrologic Unit Code 12090205
Latitude  3010'40", Longitude  9741'18" NAD27
Drainage area 321  square miles
Contributing drainage area 321  square miles
Gage datum 442.85 feet above sea level NGVD29
Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1921 Sep. 9, 1921 38.00 138,0007
1924 Jun. 22, 1924 18.00 8,240
1925 Sep. 21, 1925 6.40 254
1926 Apr. 21, 1926 24.50 24,300
1927 Jun. 14, 1927 10.00 1,780
1928 Feb. 22, 1928 14.50 4,850
1929 May 28, 1929 30.50 76,000
1941 unknown 1941   100,0007
1976 Apr. 18, 1976 19.64 10,100C
1977 Apr. 20, 1977 14.45 4,780C
1978 Nov. 1, 1977 7.77 323C
1979 May 22, 1979 19.40 10,000C
1980 May 13, 1980 10.14 2,570C
1981 Jun. 13, 1981 31.27 46,200C
1982 May 13, 1982 21.28 13,300C
1983 May 20, 1983 12.33 4,030C
1984 Nov. 5, 1983 8.79 1,470C
Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1985 Jun. 6, 1985 19.33 10,300C
1986 May 10, 1986 17.89 7,680C
1987 Jun. 4, 1987 19.79 10,9006,C
1988 Nov. 25, 1987 12.54 3,5806,C
1989 May 18, 1989 15.16 5,3706,C
1990 May 3, 1990 9.05 1,3906,C
1991 Jan. 9, 1991 19.57 10,9006,C
1992 Dec. 21, 1991 30.50 44,2006,C
1993 May 10, 1993 7.91 6516,C
1994 Aug. 9, 1994 8.71 1,1106,C
1995 May 30, 1995 19.00 9,9406,C
1996 Jun. 7, 1996 8.29 8746,C
1997 Jun. 9, 1997 22.24 14,1006,C
1998 Mar. 16, 1998 12.30 3,1306,C
1999 Oct. 17, 1998 32.36 53,9006,C
2000 Jun. 9, 2000 14.95 5,1806,C
2001 Nov. 3, 2000 18.76 9,5506,C
Peak Streamflow Qualification Codes.
  • 6 -- Discharge affected by Regulation or Diversion
  • 7 -- Discharge is an Historic Peak
  • C -- All or part of the record affected by Urbanization, Mining, Agricultural changes, Channelization, or other