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Water-Year Summary for Site 05490500

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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.
  • 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)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Mean)  
00300 Dissolved oxygen(Mean)  
00400 pH(Med.)  
32295 fDOM, water, in situ(Mean)  
63680 Turbidity, Form Neph(Mean)  

Water year 2020: 2020-10-01 to 2021-09-30
 

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USGS Water-Year Summary 2020
05490500 Des Moines River at Keosauqua, IA
LOCATION - Lat 40°43'40", long 91°57'34" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 SW 1/4 sec.36, T.69 N., R.10 W., Van Buren County, IA, Hydrologic Unit 07100009, on left bank on downstream side of bridge on State Highway 1 in Keosauqua, 4.0 mi downstream from Chequest Creek, and 49.3 mi upstream from mouth.
DRAINAGE AREA - 14,038 mi².
REVISIONS HISTORY - WSP 525: 1913-1920. WSP 1438: Drainage area. WSP 1508: 1903, 1905-1906, 1915-1918(M), 1922(M), 1924-1926(M), 1932-1934(M), 1937, 1942(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from May 1903 to July 1906, April to December 1910, August 1911 to current year. Prior to April 1918, monthly mean discharge for some periods published in WSP 1308.
GAGE - Water-stage recorder. Datum of gage is 547.36 ft above National Geodetic Vertical Datum of 1929. Prior to December 25, 1933, non-recording gage, and December 25, 1933, to September 30, 1972, water-stage recorder, both at same site at datum 10.00 ft higher.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center. Prior to December 21, 1958, and since November 30, 1960, minor diurnal fluctuations during periods of low and medium flows due to operations of power plant located 43.3 mi upstream. Flow regulated by Lake Red Rock (station 05488100), 91.0 mi upstream, since March 12, 1969.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 1, 1851, reached a stage of 24.0 ft, at current datum, discharge not determined.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 2004 to current year.