Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our Next Generation Station Page here.
Click to hideNews Bulletins

Water-Year Summary for Site 06483500

Click to hide Water-Year Summary instructions and information
  • 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.
Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
Print this page
USGS Water-Year Summary 2023
06483500 Rock River near Rock Valley, IA
LOCATION - Lat 43°12'54.3", long 96°17'42.1" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NW 1/4 sec.21, T.97 N., R.46 W., Sioux County, IA, Hydrologic Unit 10170204, on left bank 15 ft upstream from bridge on County Highway K30, 0.3 mi north of Rock Valley, and 19.4 mi upstream from mouth.
DRAINAGE AREA - 1,592 mi².
REVISIONS HISTORY - WSP 1439: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from June 1948 to current year.
GAGE - Water-stage recorder. Datum of gage is 1,223.39 ft above North American Vertical Datum of 1988. Prior to August 13, 1952, non-recording gage at site 3.2 mi downstream at datum 10.73 ft lower, with supplementary water-stage recorder operating above 6.23 ft gage height from June 4, 1949, to August 12, 1952; August 13, 1952, to May 4, 1976, water-stage recorder at site 3.2 mi downstream at datum 10.73 ft lower.
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 in 1897 reached a stage of 17.0 ft, at site and datum in use prior to May 5, 1976, discharge not determined, from information by State Highway Commission.