Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our Next Generation Station Page here.
Click to hideNews Bulletins

Water-Year Summary for Site 06935965

Click to hide Water-Year Summary instructions and information
  • 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.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Mean) [USGS monitor]  
00021 Temperature, air(Mean)  
00060 Discharge(Mean)  
00065 Gage height(Obs.)  

Water year 2020: 2019-10-01 to 2020-09-30

Print this page
USGS Water-Year Summary 2020
LOCATION - Lat 38°47'19.9", long 90°28'14.6" referenced to North American Datum of 1983, in SE 1/4 sec.29, T.47 N., R.5 E., St. Louis County, MO, Hydrologic Unit 10300200, on right bank approximately 1/4 mi downstream from State Highway A, on the St. Charles Sand Company property, and at mile 27.9.
DRAINAGE AREA - 524,000 mi². the 3,959 mi² in Great Divide basin are not included.
PERIOD OF RECORD - Apr 1, 2000 to current year. Apr 15, 1932 to Oct 1944 recording gage; Feb 16, 1984 to Sep 30, 1997 stage only operated by U.S.G.S.; Oct 1, 1997 to Apr 1, 2000, stage only operated by U.S. Army Corps of Engineers.
GAGE - Water-stage recorder. Datum of gage 413.47 ft above North American Vertical Datum of 1988. Prior to Mar 4, 1994 datum of gage was 413.58 ft above National Geodetic Vertical Datum of 1929.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS MO Water Science Center.  Some regulation from many upstream reservoirs.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Aug 2-3, 1993 reached a stage of 40.04 ft. by levels of good highwater mark.
PERIOD OF RECORD - WATER TEMPERATURE: Jan 9, 2008 to current year. SUSPENDED-SEDIMENT RECORDS: Oct 1, 2005 to Sep 2008.
REMARKS - WATER TERMPERATURE: For water year 2016, record good.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum daily, 31.9 °C, Aug 1, 2012; minimum daily, 0.4 °C, Jan 10, 11, 2015. SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily mean, 3,560 mg/l, Oct 21, 2007; minimum daily mean, 82 mg/l, Feb 9, 10, 11, 13, 2007. SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, 1,950,000 tons, May 10, 2007; minimum daily, 6,710 tons, Feb 10, 2007.