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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.
USGS Water-Year Summary 2024
05459500 Winnebago River at Mason City, IA
LOCATION - Lat 43°09'54", long 93°11'33" referenced to North American Datum of 1983, in NE 1/4 SE 1/4 NW 1/4 sec.03, T.96 N., R.20 W., Cerro Gordo County, IA, Hydrologic Unit 07080203, on right bank 650 ft upstream from bridge on 13th Street in Mason City, 0.1 mi downstream from Calmus Creek, 1.0 mi upstream from Willow Creek, and 20.2 mi upstream from mouth.
DRAINAGE AREA - 526 mi².
REVISIONS HISTORY - WSP 825: 1935-1936. WSP 1438: Drainage area. WSP 1558: 1933-1937, 1943(M), 1945, 1948.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from October 1932 to current year. Prior to January 1933, monthly mean discharge published in WSP 1308. Prior to October 1959, published as "Lime Creek at Mason City."
GAGE - Water-stage recorder and concrete control. Datum of gage is 1,069.51 ft above North American Vertical Datum of 1988. Prior to October 15, 1934, non-recording gage at datum 6.47 ft lower; October 15 to November 6, 1934, non-recording gage at different datum; November 7, 1934, to March 22, 1935, non-recording gage at same datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center.
ECOLOGICAL RECORDS
REMARKS - Open water streamflow can be compared well with the Cedar River at Charles City (05457700).
