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Water-Year Summary for Site 05455010

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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
00065 Gage height(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2021
05455010 South Branch Ralston Creek at Iowa City, IA
LOCATION - Lat 41°39'05", long 91°30'27" referenced to North American Datum of 1927, 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.
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 678.03 ft above National Geodetic Vertical Datum of 1929. 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.