LOCATION.--Lat 43°00'19.4", long 92°55'32.1"
referenced to North American Datum of 1983, in SW 1/4 NW 1/4 NW 1/4
sec.36, T.95 N., R.18 W., Floyd County, IA, Hydrologic Unit 07080202,
on right downstream side of bridge on Foothill Avenue, 3.0 mi south
of Rockford, 0.8 mi downstream from Beaver Creek, 0.5 mi upstream
from Drainage Ditch 20, and 50.3 mi upstream from mouth. (map)
DRAINAGE AREA.--1,251 mi2.
SURFACE-WATER RECORDS
PERIOD OF RECORD.--Discharge records from April 2010 to June 2016,
October 2016 to current year.
GAGE.--Water-stage recorder. Datum of gage is 960.23 ft above
North American Vertical Datum of 1988.
REMARKS.--Occasional minor regulation caused by dam 3.8 mi
upstream. For climatological records collected at this site, see
Raingage at Shell Rock River near Rockford, IA (station
430019092553201).