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Water-Year Summary for Site 06935830

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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.
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Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Obs.)  

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

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USGS Water-Year Summary 2023
LOCATION - Lat 38°39'16.8", long 90°35'41.6" referenced to North American Datum of 1983, in T.45 N., R.4 E., St. Louis County, MO, Hydrologic Unit 10300200, on upstream right side of wingwall of Highway CC bridge, 2.0 mi west of State Highway 340, 1.1 mi south of U.S. Route 40, and 1.09 mi upstream of Bonhomme Creek.
DRAINAGE AREA - 17.1 mi².
REVISIONS HISTORY - WDR-US-2008: 1997-2007 (P).
Revisions: Gage datum was revised to 451.41 ft NAVD88 on January 24, 2023, as determined by a GNSS Level II survey. Gage datum was previously published in error as 453.98 ft NGVD29 from July 1996 to January 2023.
PERIOD OF RECORD - Jul 1996 to current year. Annual peaks only for the 1972-1974 water years published in WRD MO 1974.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 451.41 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.  
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Apr 11, 1979 reached a stage of 19.97 ft, former datum, discharge 7,940 ft³/s.