LOCATION.--Lat 41°53'40", long 90°09'24"
referenced to North American Datum of 1983, in NE 1/4 NE 1/4 SW 1/4
sec.21, T.82 N., R.7 W., Whiteside County, Illinois, Hydrologic Unit
07080101, on left bank on downstream side of lock at Lock and Dam 13,
and 1.0 mi north from Fulton. (map)
SURFACE-WATER RECORDS
GAGE.--Water-stage recorder. Datum of gage is 568.16 ft above
National Geodetic Vertical Datum of 1929. Auxiliary gage for
Mississippi River at Clinton (station 05420500), 10.6 mi
downstream.