Station list
05586100 ILLINOIS RIVER AT VALLEY CITY, IL
LOCATION.--Lat 39�42'12", long 90�38'43", in SE¼NW¼ sec.34, T.15 N., R.14 W., Scott County, Hydrologic Unit 07130011,
on upstream side of Norfolk & Southern Corporation Railroad bridge at Flints Creek, 0.4 mi east of Valley City, 1.8 mi
downstream from Mauvaise Terre Creek, and at mile 61.3.
DRAINAGE AREA.--26,743 mi2, does not include diversion from Lake Michigan through the Chicago Sanitary and Ship Canal,
which has occurred since Jan. 17, 1900.
PERIOD OF RECORD.--October 1938 to current year. Prior to October 1960, at site 0.2 mi upstream at same datum. Prior to
October 1989, published as "at Meredosia." Records are considered equivalent.
GAGE.--Water-stage recorder. Datum of gage is 418.00 ft above sea level (levels by U.S. Army Corps of Engineers).
REMARKS.--Records fair except those for Jan. 7 - Feb. 11 and those for
estimated daily discharges, which are poor. Occasional regulation
at low flow by navigation dam at La Grange. Since Jan. 17, 1900, flow has included diversion from Lake Michigan through
Chicago Sanitary and Ship Canal. U.S. Army Corps of Engineers satellite telemeter at station. Water temperature and specific
conductance continuously recorded at station for the National Water-Quality Assessment Program.