LOCATION.--Lat 41°20'46", long 95°04'36"
referenced to North American Datum of 1927, in NE 1/4 NW 1/4 NW 1/4
sec.35, T.76 N., R.37 W., Cass County, IA, Hydrologic Unit 10240003,
on left bank on downstream side of bridge on Lansing Road, 5.2 mi
southwest of intersection of U.S. Highway 6 and State Highway 83 in
Atlantic, 1.6 mi upstream from Turkey Creek, 74.3 mi upstream from
confluence with West Nishnabotna River, and 89.9 mi upstream from
mouth of Nishnabotna River. (map)
DRAINAGE AREA.--436 mi2.
PERIOD OF RECORD.--Discharge records from October 1960 to current
GAGE.--Water-stage recorder. Datum of gage is 1,105.83 ft above
National Geodetic Vertical Datum of 1929. Prior to October 1, 1970,
at site 2.2 mi upstream at datum 5.00 ft higher.