During the winter, river stage may be significantly affected by
backwater from ice, resulting in incorrect discharge data.
Consequently, discharge data may not be displayed during periods of ice
LOCATION.--Lat 42°54'13", long 91°08'42"
referenced to North American Datum of 1927, in SW 1/4 NE 1/4 NW 1/4
sec.1, T.93 N., R.3 W., Clayton County, IA, Hydrologic Unit 07060003,
200 ft downstream from public boat landing in Clayton, 6.0 mi
downstream from the Wisconsin River, and 624.8 mi upstream from the
Ohio River. (map)
DRAINAGE AREA.--79,200 mi2.
PERIOD OF RECORD.--Discharge records from April 1930 to June 1936;
stage-only records from January 1992 to current year.
GAGE.--Water-stage recorder. Datum of gage is 602.60 ft above
National Geodetic Vertical Datum of 1929.