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USGS Water-Year Summary 2024
08082500 Brazos River at Seymour, TX
LOCATION - Lat 33°34'51", long 99°16'02" referenced to North American Datum of 1927, Baylor County, TX, Hydrologic Unit 12060101, on downstream side of bridge on U.S. Highways 277 and 283, 0.8 mi upstream from Wichita Valley Railway bridge, 1.0 mi southwest of courthouse in Seymour, and at mile 847.4.
DRAINAGE AREA - 15,538 mi² of which 9,566 mi² probably is noncontributing.
REVISIONS HISTORY - WSP 808: 1924-29. WSP 1312: 1933. WDR TX-76-2: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Dec. 1923 to current year.
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Aug. 1942 to Sept. 1995, Oct. 1996 to Aug. 2002.
BIOCHEMICAL DATA: Oct. 1966 to Sept. 1977, Dec. 1996 to Aug. 2002.
PESTICIDE DATA: Apr. 1975 to Aug. 1977.
SEDIMENT DATA: Oct. 1974 to Sept. 1977.
PERIOD OF DAILY RECORD, Water-Quality.--
SPECIFIC CONDUCTANCE: Aug. 1959 to Sept. 1995.
WATER TEMPERATURE: Aug. 1959 to Sept. 1995.
GAGE - Water-stage recorder. Datum of gage is 1,238.97 ft above NGVD of 1929. Prior to Apr. 6, 1972, at datum 2.00 ft higher. Satellite telemeter at station.
REMARKS - Since water year 1964, at least 10% of contributing drainage area has been regulated. Small diversions upstream from station for irrigation and oil field operations. No flow at times. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in 1906 reached a peak stage of 23.0 ft, present datum, from information by local residents.
EXTREMES FOR PERIOD PRIOR TO REGULATION - WATER YEARS, 1924 to 1963: Maximum discharge, 95,400 ft³/s Oct. 16, 1926 (gage height, 17.16 ft, present datum); Maximum gage height, 23.00 ft, present datum, Sept. 28, 1955; no flow at times.
AVERAGE DISCHARGE FOR PERIOD PRIOR TO REGULATION - 39 years (water years 1925-63) prior to regulation, 434 ft³/s (314,100 acre-ft/yr).
