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Water-Year Summary for Site 05484500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Mean)  
00060 Discharge(Mean)  
83554 NO3+NO2, w, total(Mean)  
99133 NO3+NO2,water,insitu(Mean)  

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

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USGS Water-Year Summary 2023
05484500 Raccoon River at Van Meter, IA
LOCATION - Lat 41°32'02.5", long 93°56'59.2" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 SW 1/4 sec.22, T.78 N., R.27 W., Dallas County, IA, Hydrologic Unit 07100006, on right bank 160 ft downstream from bridge on County Highway R16, 0.3 mi northeast of Van Meter, 0.7 mi upstream from small left bank tributary, 1.2 mi downstream from confluence of North and South Raccoon Rivers, and 29.3 mi upstream from mouth.
DRAINAGE AREA - 3,441 mi².
REVISIONS HISTORY - WSP 1308: 1927(M). WSP 1438: Drainage area. WSP 1508: 1915(M), 1925(M), 1926, 1933(M), 1939(M), 1947(M), 1949(M).
Revisions: Gage datum was revised to 836.49 ft NAVD88 on January 1, 2023, as determined by a GNSS Level II survey. Gage datum was previously published in error as 841.61 ft NGVD29 from levels.
PERIOD OF RECORD - Discharge records from April 1915 to current year. Prior to October 1933, monthly mean discharge for some periods published in WSP 1308.
GAGE - Water-stage recorder. Datum of gage is 836.49 ft above North American Vertical Datum of 1988. Prior to October 1, 1915, non-recording gage at same site at datum 2.00 ft higher. October 1, 1915, to May 30, 1923, non-recording gage, May 31, 1923, to September 30, 1927, water-stage recorder, and October 1, 1927, to August 8, 1934, non-recording gage, all at same site and datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center.
PERIOD OF RECORD - Water years 1974-1979, 1987-1994.
NITRATE + NITRITE: March 2012 to current year, records fragmentary.
WATER TEMPERATURE: March 2012 to current year.