USGS Water-Year Summary 2024
08114000 Brazos River at Richmond, TX
LOCATION - Lat 29°34'56", long 95°45'27" referenced to North American Datum of 1927, Fort Bend County, TX, Hydrologic Unit 12070104, on right bank at upstream side of downstream bridge on U.S. Highway 90 in Richmond, 850 ft downstream from Texas and New Orleans Railroad Co. bridge, and at mile 92.0.
DRAINAGE AREA - 45,107 mi² of which 9,566 mi² probably is noncontributing.
REVISIONS HISTORY - WSP 1392: 1933. WSP 1632: 1958. WDR TX-76-2: Drainage area. WDR TX-00-3 Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Jan. 1903 to June 1906, Oct. 1922 to current year. Published as "at Rosenberg" Oct. 1922 to Sept. 1931. Records from June to Nov. 1901 and June to Sept. 1902 contained in U.S. Department of Agriculture, Office of Experiment Stations, Bulletin Nos. 119 and 133. Gage-height records collected in this vicinity since 1914 are contained in reports of the National Weather Service.
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Oct. 1941 to Sept. 2002.
BIOCHEMICAL DATA: Oct. 1959 to Sept. 2002.
BIOLOGICAL DATA: Oct. 1980 to Sept. 1995.
PESTICIDE DATA: Oct. 1967 to May 1982.
SEDIMENT DATA: Apr. 1957 to Sept. 1995.
PERIOD OF DAILY RECORD, Water-Quality.--
SPECIFIC CONDUCTANCE: Oct. 1941 to Sept. 1995.
WATER TEMPERATURE: Nov. 1950 to Sept. 1995.
SUSPENDED-SEDIMENT DATA: Jan. 1966 to Sept. 1986.
GAGE - Water-stage recorder. Datum of gage is 27.94 ft above NGVD of 1929, 26.72 ft above NAVD of 1988. Prior to Oct. 1, 1922, various types of nonrecording gages at railroad bridge 925 ft upstream at different datums. Oct. 1, 1922 to Sept. 30, 1931, nonrecording chain gage at Rosenberg 7.6 mi upstream at datum about 17 ft higher; Oct. 1, 1931 to Sept. 30, 1975, water-stage recorder at present site at datum 13.00 ft higher than current datum; Oct. 1, 1975 to Dec. 31, 1988, water-stage recorder at present site and at datum 10.00 ft higher than current datum. Satellite telemeter at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1852, 61.2 ft, Dec. 10, 1913, present datum, from floodmarks on right bank 1,000 ft upstream from gage. From information by Texas and New Orleans Railroad Co., stages of other floods at railroad bridge, present datum, are as follows: May 1884, 56.7 ft; June 13, 1885, 57.7 ft; July 1899, 58.6 ft; May 2, 1915, 56.3 ft; and May 9, 1922, 53.9 ft.
EXTREMES FOR PERIOD PRIOR TO REGULATION -
WATER YEARS, 1903-1906, 1923-1940: Maximum discharge, 123,000 ft³/s, June 6, 1929 (gage height, 53.6 ft, from floodmark), present site and datum; minimum daily, 35 ft³/s, Aug. 23, 1934.
AVERAGE DISCHARGE FOR PERIOD PRIOR TO REGULATION - 20 years (water years 1904-05, 1923-40) 7,209 ft³/s (5,223,000 acre-ft/yr).