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.
USGS Water-Year Summary 2024
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.
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.
SURFACE-WATER RECORDS
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.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1974-1979, 1987-1994.
PERIOD OF DAILY RECORD -
NITRATE + NITRITE: March 2012 to current year, records fragmentary.
WATER TEMPERATURE: March 2012 to current year.
