USGS Water-Year Summary 2020
07288500 BIG SUNFLOWER RIVER AT SUNFLOWER, MS
LOCATION - Lat 33°32'50", long 90°32'35" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 sec.06, T.19 N., R.3 W., Sunflower County, MS, Hydrologic Unit 08030207, Choctaw Meridian, near right bank on downstream side of highway bridge, 0.5 mi northwest of Sunflower, 2.5 mi downstream from Jones Bayou, and 19.0 mi upstream from Quiver River.
DRAINAGE AREA - 767 mi².
- WSP 1211: Drainage area. WDR Miss. 1970: 1969(M).
PERIOD OF RECORD - October 1935 to September 30, 1980; October 2002 to current year. Prior to October 1938, monthly discharge only published in WSP 1311. February 1918 to September 1935 (gage heights only), October 1980 to September 1995 in reports of Corps of Engineers, Vicksburg district. Prior to October 1, 1972, published as Sunflower River at Sunflower, Miss.
PERIOD OF DAILY RECORD WATER QUALITY.--
TURBIDITY: October 2009 to September 2010.
GAGE - Water-stage recorder. Datum of gage is 93 ft above NGVD of 1929 (levels by U. S. Army Corps of Engineers). Prior to Nov. 28, 1934, nonrecording gage on upstream side of bridge at datum 93.00 ft (28.346 m) lower. Nov. 28, 1934, to June 30, 1947, nonrecording gage on upstream side of bridge at present datum.
EXTREMES FOR PERIOD OF RECORD
Maximum instantaneous discharge = 15,000 cfs on March 18, 2016.
Maximum instantaneous gage height = 28.37 feet on March 18, 2016.
PERIOD OF RECORD - October 2009 to current year.
PERIOD OF DAILY RECORD - TURBIDITY: October 2009 to September 2010.
INSTRUMENTATION - Water-quality monitor October 2009 - September 2010.