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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
05470500 Ioway Creek at Ames, IA
LOCATION - Lat 42°01'21.2", long 93°37'49.8" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 SW 1/4 sec.03, T.83 N., R.24 W., Story County, IA, Hydrologic Unit 07080105, on left bank 65 ft downstream from bridge on Lincoln Way in Ames, 0.2 mi downstream from College Creek, and 2.5 mi upstream from mouth.
DRAINAGE AREA - 204 mi².
REVISIONS HISTORY - WSP 1308: Drainage area, 1920-1922(M), 1923, 1924-1925(M), 1926, 1927(M). WDR IA-66-1: 1965. WDR IA-71-1: 1970(M).
Revisions: Gage datum was updated to 880.48 ft NAVD88 on July 11, 2022, as determined by a GNSS Level II survey. Gage datum was previously published as 881.00 ft NGVD29 from levels.
Revisions: Gage datum was updated to 880.48 ft NAVD88 on July 11, 2022, as determined by a GNSS Level II survey. Gage datum was previously published as 881.00 ft NGVD29 from levels.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from May 1919 to September 1927, May 1965 to current year. December 1925 to September 1927, monthly mean discharge for some periods published in WSP 1308. Prior to May 2021, published as Sq___ Creek at Ames, IA.
GAGE - Water-stage recorder and concrete control. Datum of gage is 880.48 ft above North American Vertical Datum of 1988 (levels by Iowa State University). Prior to March 11, 1925, non-recording gage at site 0.6 mi upstream at different datum; March 11, 1925, to April 30, 1927, non-recording gage at site 65 ft upstream at datum about 4 ft higher.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 4, 1918, reached a stage of 14.50 ft, from high-water mark, at site and datum in use prior to March 11, 1925, discharge 6,900 ft³/s.
