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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.
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USGS Water-Year Summary 2024
05455010 South Branch Ralston Creek at Iowa City, IA
LOCATION - Lat 41°39'05.06", long 91°30'27.59" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 NE 1/4 sec.14, T.79 N., R.6 W., Johnson County, IA, Hydrologic Unit 07080209, on right bank 60 ft downstream from bridge on Muscatine Avenue in Iowa City, 1.3 mi upstream from mouth, and 3.1 mi upstream from mouth of Ralston Creek.
DRAINAGE AREA - 2.94 mi².
REVISIONS HISTORY - WDR IA-66-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from October 1963 to September 1995; stage-only records from October 1996 to current year.
GAGE - Water-stage recorder. Datum of gage is 677.89 ft above North American Vertical Datum of 1988. Beginning June 27, 2012, daily gage height values of <1.49 ft indicate stage was at or below the gage height of zero flow (GZF).
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center. Minor regulation from retention dam 2.0 mi upstream may affect peaks.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of July 14, 1962, reached a stage of 10.5 ft, from flood profile, discharge not determined.
