LOCATION.--Lat 41°49'38", long 90°11'25"
referenced to North American Datum of 1927, in SW 1/4 SE 1/4 NW 1/4
sec.18, T.81 N., R.7 E., Clinton County, IA, Hydrologic Unit
07080101, at downstream end of ADM repair dock at end of 3rd Street,
4.8 mi upstream from Clinton gage (station 05420500), 5.9 mi
downstream from Lock and Dam 13, 10.3 mi upstream from Wapsipinicon
River, and 516.6 mi upstream from Ohio River. (map)
DRAINAGE AREA.--85,600 mi2.
PERIOD OF RECORD.--Discharge records from October 1992 to current
GAGE.--Water-stage recorder. Datum of gage is 562.68 ft above
National Geodetic Vertical Datum of 1929.
REMARKS.--Minor flow regulation caused by navigation dams.