USGS Water-Year Summary 2020
08108700 Brazos River at State Highway 21 near Bryan, TX
LOCATION - Lat 30°37'36", long 96°32'38" referenced to North American Datum of 1927, Burleson County, TX, Hydrologic Unit 12070101, on right bank, 8 ft downstream from bridge on State Highway 21, 2.1 mi upstream from Little Brazos River, and 10.5 mi west of Bryan.
DRAINAGE AREA - 39,049 mi² of which 9,566 mi² probably is noncontributing.
PERIOD OF RECORD - July 1993 to current year.
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Sept. 1961 to Sept. 1965.
BIOCHEMICAL DATA: Sept. 1961 to Sept. 1965.
GAGE - Water-stage recorder. Datum of gage is 189.30 ft above NGVD of 1929. Satellite telemeter at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Dec. 5, 1913, reached a stage of 61 ft, present site and datum, from information by Texas and New Orleans Railroad Co. at their bridge 200 ft upstream. Flood in 1854 reached about the same stage as flood of Dec. 5, 1913.