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Peak Streamflow for Texas

USGS 08105000 San Gabriel Rv at Georgetown, TX

Williamson County, Texas
Hydrologic Unit Code 12070202
Latitude  3039'14", Longitude  9739'18" NAD27
Drainage area 405  square miles
Contributing drainage area 405  square miles
Gage datum 643.24 feet above sea level NGVD29
Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1921 unknown 1921 36.10 160,0007
1935 May 18, 1935 15.45 25,100
1936 Sep. 16, 1936 17.70 32,400
1937 Jul. 10, 1937 11.96 16,300
1938 Jan. 23, 1938 15.15 24,800
1939 Jun. 6, 1939 3.97 903
1940 Jun. 30, 1940 18.46 34,500
1941 Nov. 23, 1940 16.95 30,000
1942 Jun. 10, 1942 12.93 18,600
1943 Oct. 18, 1942 8.32 7,800
1944 Jun. 6, 1944 19.49 37,500
1945 Jan. 18, 1945 9.54 10,300
1946 Sep. 26, 1946 8.42 8,000
1947 Dec. 11, 1946 13.80 21,000
1948 May 11, 1948 11.07 14,000
1949 Apr. 28, 1949 7.70 6,600
1950 May 11, 1950 6.87 5,080
1951 Sep. 13, 1951 7.03 5,350
1952 May 28, 1952 9.85 11,000
1953 Dec. 19, 1952 11.24 14,300
Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1954 Oct. 23, 1953 15.25 24,200
1955 May 18, 1955 11.48 12,400
1956 May 2, 1956 7.18 5,660
1957 Apr. 24, 1957 34.10 155,000
1958 Feb. 22, 1958 14.07 21,800
1959 Aug. 31, 1959 5.66 3,080
1960 Oct. 4, 1959 26.25 71,500
1961 Feb. 16, 1961 14.53 22,800
1962 Jun. 3, 1962 6.27 4,040
1963 Oct. 29, 1962 3.89 858
1964 Oct. 24, 1963 11.04 13,800
1965 May 18, 1965 15.87 26,700
1966 Apr. 24, 1966 7.33 5,840
1967 May 1, 1967 4.75 1,900
1968 Jan. 21, 1968 14.07 21,800
1969 Apr. 12, 1969 13.72 20,700
1970 Mar. 7, 1970 9.90 11,200
1971 Jul. 30, 1971 9.19 9,640
1972 Oct. 20, 1971 6.72 4,790
1973 Jul. 15, 1973 12.70 18,100
2000 Jun. 30, 2000 -- 17.1
Peak Streamflow Qualification Codes.
  • 7 -- Discharge is an Historic Peak