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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
05455700 Iowa River near Lone Tree, IA
LOCATION - Lat 41°25'25.6", long 91°28'42.7" referenced to North American Datum of 1983, in NW 1/4 NE 1/4 NW 1/4 sec.06, T.76 N., R.5 W., Louisa County, IA, Hydrologic Unit 07080209, on left bank 30 ft downstream from tri-county bridge on County Highway W66, 5 mi southwest of Lone Tree, 6.2 mi downstream from English River, and 46.6 mi upstream from mouth.
DRAINAGE AREA - 4,293 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from October 1956 to current year.
GAGE - Water-stage recorder. Datum of gage is 587.93 ft above North American Vertical Datum of 1988. Prior to December 28, 1956, non-recording gage at same site and datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center. Flow regulated by Coralville Lake (station 05453510), 36.1 mi upstream, since September 17, 1958.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of May 25, 1944, reached a stage of 19.94 ft, from information by U.S. Army Corps of Engineers, discharge not determined.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 2008, 2012.
