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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2024
07061600 BLACK RIVER BELOW ANNAPOLIS, MO
LOCATION - Lat 37°19'30", long 90°45'50" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 NW 1/4 sec.31, T.31 N., R.3 E., Reynolds County, MO, Hydrologic Unit 11010007, approximately 4.5 mi southwest of Annapolis on the County Highway K bridge pier.
DRAINAGE AREA - 493 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Jan 2006 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 555.31 ft above North American Vertical Datum of 1988.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS MO Water Science Center.
WATER-QUALITY RECORDS
PERIOD OF RECORD - May 1993 to Sep 1995, Nov 1999 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Jan 2006 to Jan 2010.
pH: Jan 2006 to Jan 2010.
WATER TEMPERATURE: Jan 2006 to Jan 2010.
DISSOLVED OXYGEN: Jan 2006 to Jan 2010.
TURBIDITY: Jan 2006 to Jan 2010.
SUSPENDED-SEDIMENT CONCENTRATION: Jan 2006 to Dec 2007.
SUSPENDED-SEDIMENT DISCHARGE: Jan 2006 to Dec 2007.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum daily, 357 uS/cm, Oct 18, 2006; minimum daily, 19 uS/cm Apr 12, 13, 2008.
pH: Maximum daily, 8.3 standard units Oct 24-30, 2007, Apr 8, 2008, Dec 9, 20-22, 2009, Jan 12-18, 2010; minimum daily 7.4 standard units, Mar 21-23, 31, Apr 3, 2007.
WATER TEMPERATURE: Maximum daily, 27.1 °C, Aug 8, 9, 2007; minimum daily, 1.0 °C Jan 27, 2009.
DISSOLVED OXYGEN: Maximum daily, 18.0 mg/L, Feb 20, 2008; minimum daily, 2.0 mg/L Apr 12, 2008.
TURBIDITY: Maximum daily, 330 FNU, Sep 5, 2008; minimum daily, 0 FNU, many days in period of record.
SUSPENDED-SEDIMENT CONCENTRATION: (water years 2006-08) Maximum daily, 2,520 mg/L Dec 2, 2006; minimum daily, 0.4 mg/L Jun 22, 26, 29, 30, Jul 1, 2007.
SUSPENDED-SEDIMENT DISCHARGE: (water years 2006-08) Maximum daily, 28,700 tons Dec 2, 2006; minimum daily, 0.14 tons Aug 17, 2007.
