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Peak Streamflow for Texas

USGS 08462500 Rio Grande at Roma, TX

Starr County, Texas
Hydrologic Unit Code
Latitude  2624'00", Longitude  9901'00" NAD27
Drainage area 166,464  square miles
Contributing drainage area 166,464  square miles
Gage datum 142.65 feet above sea level NGVD29
Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1865 unknown 1865 43.00 630,0007
1899 Jun. 16, 1899   130,000
1900 Apr. 8, 1900   120,000
1901 Oct. 2, 1900   18,600
1902 Sep. 12, 1902   30,200
1903 Jun. 16, 1903   70,200
1904 Sep. 16, 1904   143,000
1905 Jul. 2, 1905   102,000
1906 Aug. 15, 1906   55,000
1907 Jul. 4, 1907   35,000
1908 Aug. 17, 1908   27,000
1909 Jul. 3, 1909   57,000
1910 Sep. 16, 1910   82,000
1911 May 19, 1911   21,930
1912 Jun. 20, 1912   90,000
1913 Sep. 26, 1913   52,800
1914 Oct. 3, 1913   90,000
1915 Oct. 24, 1914   140,000
1919 Sep. 25, 1919   155,000
1920 Sep. 11, 1920   64,000
1922 Jun. 22, 1922   202,000
1923 Sep. 9, 1923   89,500
1924 Sep. 23, 1924   49,0006
1925 Jun. 2, 1925   161,0006
1926 Oct. 1, 1925   97,0006
1927 Jun. 26, 1927   41,0006
Water
Year
Date Gage
Height
(feet)
Stream-
flow
(cfs)
1928 May 14, 1928   71,0006
1930 Jun. 12, 1930   59,0006
1931 Jul. 18, 1931   90,4006
1932 Sep. 5, 1932   203,4006
1933 Sep. 7, 1933   100,0006
1934 Oct. 16, 1933   34,9006
1935 Jun. 17, 1935   141,0006
1936 May 9, 1936   68,4006
1937 Jun. 7, 1937   21,2006
1938 Jul. 27, 1938   100,0006
1939 May 6, 1939   32,6006
1940 Mar. 25, 1940   55,1006
1941 Oct. 25, 1940   55,4006
1942 Jul. 7, 1942   75,9006
1943 Jun. 6, 1943   40,6006
1944 Aug. 29, 1944   97,1106
1945 Apr. 21, 1945   29,6606
1946 May 30, 1946   82,3006
1947 Oct. 9, 1946   67,5006
1948 Sep. 11, 1948   176,9006
1949 Apr. 26, 1949   98,5306
1950 May 28, 1950   47,3206
1951 Sep. 15, 1951 25.82 78,7506
1952 May 30, 1952 14.17 31,7106
1953 Aug. 27, 1953 23.26 56,5006
1954 Oct. 22, 1953 16.57 36,3706
Peak Streamflow Qualification Codes.
  • 6 -- Discharge affected by Regulation or Diversion
  • 7 -- Discharge is an Historic Peak