USGS Water-Year Summary for Site USGS 07288280

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	Available Parameters
	00010 Temperature, water(Mean)
	00060 Discharge(Mean)
	00065 Gage height(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

07288280 BIG SUNFLOWER RIVER NEAR MERIGOLD, MS

LOCATION - Lat 33°49'57", long 90°40'12" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 sec.24, T.23 N., R.5 W., Bolivar County, MS, Hydrologic Unit 08030207, Choctaw Meridian, County Code 011, at county road bridge 3.0 miles east of US Hwy 61, south of Merigold, 89.6 miles upstream from Yazoo River confluence.

DRAINAGE AREA - 553 mi².

REVISIONS HISTORY - WDR-MS-97-1: 1996.

SURFACE-WATER RECORDS

PERIOD OF RECORD -

Oct. 1992 to current year for stage and discharge

Jul 31, 2014 to Oct 01, 2021 (discontinued) for NAVD (assumed) Stream Elevation

GAGE -

Water Stage Recorder

Datum of Gage is 99.99 ft above NAVD of 1988. (Reference Frame NAD_83 (2011) (EPOCH:2010:0000), (GEOID18). Prior to April 04, 3023 the Datum of gage was 100.00 ft above NGVD of 1929 (Mississippi Department of Transportation, MDOT bench mark). Recorder is located in walk-in house, near right upstream bridge abutment.

COOPERATION - MDEQ (Mississippi Department of Environmental Quality) and US Army Corps of Engineers (COE), Vicksburg District

REMARKS - Records good except for estimated daily records, which are poor. Satellite telemeter at station.

EXTREMES FOR PERIOD OF RECORD -

Maximum reported discharge, 10,900 cfs on Mar 14, 2016

Maximum reported gage height, 37.44 feet, gage datum on Mar 14, 2016

Minimum reported gage height, 3.03 feet, gage datum on Dec 29, 2021

WATER-QUALITY RECORDS

PERIOD OF RECORD - Sep 24 - Sep 27, 2007, Jun 28, 2011 to Dec 07, 2012, and July 30, 2014 to current

REMARKS - Historical range follows seasonal/diurnal heating and cooling. Missing data is not gap-filled. Larger diurnal swings may be evident during summer months. Comparison may be done to nearby sites at Clarksdale (upstream) and Sunflower (downstream).

EXTREMES FOR PERIOD OF RECORD -

Highest reported water temperature, 34.98 deg C on Jun 16, 2022

Lowest reported water temperature, 0.10 deg C on Jan 02, 07, and 20, 2018 (0.00 values deleted below threshold)