LOCATION.--Lat 43°25'22.8", long 96°09'52.5"
referenced to North American Datum of 1927, in SW 1/4 NW 1/4 SE 1/4
sec.4, T.99 N., R.45 W., Lyon County, IA, Hydrologic Unit 10170204,
on right bank 5 ft downstream from bridge on gravel road in Campbell
Park, near waterworks lift station, 200 ft east of intersection of
Tama Street and South 9th Avenue in Rock Rapids, 1.1 mi downstream
from Tom Creek, and 44.8 mi upstream from mouth. (map)
DRAINAGE AREA.--853 mi2.
PERIOD OF RECORD.--Discharge records from May 2001 to current
GAGE.--Water-stage recorder. Datum of gage is 1,308.57 ft above
National Geodetic Vertical Datum of 1929.