LOCATION.--Lat 43°04'56.2", long 94°13'51.1"
referenced to North American Datum of 1983, in NW 1/4 NE 1/4 NE 1/4
sec.2, T.95 N., R.29 W., Kossuth County, IA, Hydrologic Unit
07100003, on left bank on downstream side of bridge on State Highway
18 in Algona, and 374.4 mi upstream from mouth of Des Moines River.
DRAINAGE AREA.--884 mi2.
PERIOD OF RECORD.--Stage-only records from March 2009 to September
2011 (no winter records); discharge records from October 2011 to
GAGE.--Water-stage recorder. Datum of gage is 1,098.74 ft above
National Geodetic Vertical Datum of 1929 (levels by U.S. Army Corps