USGS Water-Year Summary 2020
08145000 Brady Creek at Brady, TX
LOCATION - Lat 31°08'17", long 99°20'05" referenced to North American Datum of 1927, McCulloch County, TX, Hydrologic Unit 12090110, on left bank 60 ft upstream from bridge on U.S. Highway 377 on North Bridge Street in Brady, 0.4 mi downstream from Live Oak Creek, and 30.4 mi upstream from mouth.
DRAINAGE AREA - 588 mi².
- WSP 1512: 1941(M), 1951(M). WDR TX-81-3: Drainage area.
PERIOD OF RECORD - June 1939 to Sept. 1986, Apr. 2001 to current year.
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: May 1944 to Jan. 1965.
BIOCHEMICAL DATA: May 1944 to Jan. 1965.
GAGE - Water-stage recorder. Datum of gage is 1,646.50 ft above NGVD of 1929. Prior to July 9, 1940, nonrecording gage at site 3,600 ft upstream at datum 8.24 ft higher. Satellite telemeter at station.
COOPERATION - USGS Groundwater and Streamflow Information Program (GWSIP).
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1882, 29.1 ft, July 23, 1938, present site and datum, discharge at site 5.0 mi downstream, 86,000 ft³/s, by slope-area measurement. Flood of Oct. 6, 1930, second highest since 1882, reached a stage of 25.9 ft, discharge, 50,300 ft³/s, present site and datum, from information by local residents.
EXTREMES FOR PERIOD PRIOR TO REGULATION -
WATER YEARS 1939-1962: Maximum discharge, 39,100 ft³/s, Sept. 10, 1952, gage height, 24.80 ft; no flow at times most years.
AVERAGE DISCHARGE FOR PERIOD PRIOR TO REGULATION - 23 years (water years 1940-62) prior to completion of Brady Creek Reservoir, 25.2 ft³/s (18,260,000 acre-ft/yr).