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Peak Streamflow for the Nation

USGS 08458700 Rio Grande at San Antonio Crsg nr Laredo, TX

Maverick County, Texas
Hydrologic Unit Code 13080002
Latitude  28°21'00", Longitude 100°18'00" NAD27
Drainage area 129,226  square miles
Contributing drainage area 129,226  square miles
Gage datum 580.00 feet above NGVD29
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Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
1954 1954-06-29 42.70 912,0006
1955 1955-09-26 10.43 50,5006
1956 1956-09-02 5.36 11,7006
1957 1957-05-29 12.67 73,5006
1958 1958-06-19 13.13 78,8006
1959 1958-10-08 11.37 59,6006
1960 1959-10-06   31,5006
1961 1961-06-18 19.85 181,0006
1962 1962-09-11 5.47 14,7006
1963 1962-10-21 6.31 20,3006
1964 1964-09-25 26.03 250,0006
1965 1965-06-14 9.75 37,1006
1966 1966-05-01 16.04 37,8006
1967 1967-09-04 9.80 32,0006
1968 1968-05-11 9.47 18,9006
1969 1969-08-27 11.65 41,5006
1970 1969-10-06 9.89 22,5006
1971 1971-06-28 14.38 82,4006
1972 1972-08-13 9.44 18,4006
1973 1973-09-23 9.71 19,6006
1974 1974-09-24 16.27 67,9006
1975 1975-07-19 23.20 131,0006
1976 1976-07-18 13.15 45,9006
1977 1977-05-22 9.86 23,6006
1978 1978-06-04 8.76 11,3006
1979 1978-11-06 11.53 35,6006
1980 1980-08-12 11.78 35,7006
1981 1981-04-24 9.84 23,0006
1982 1981-10-14 9.02 13,5006
1983 1983-09-19 12.83 43,6006
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  Peak Streamflow Qualification Codes.