LOCATION.--Lat 41°14'47.9", long 93°17'24.6"
referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NW 1/4
sec.4, T.74 N., R.21 W., Marion County, IA, Hydrologic Unit 07100008,
on right bank on upstream side of bridge on 30th Avenue, 2.3 mi
northwest of Dallas, 1.0 mi upstream from Kirk Branch, and 22.0 mi
upstream from mouth. (map)
DRAINAGE AREA.--333 mi2.
PERIOD OF RECORD.--Discharge records from October 1962 to current
GAGE.--Water-stage recorder. Datum of gage is 762.83 ft above
National Geodetic Vertical Datum of 1929. Prior to October 29, 2008,
at site 1.4 mi downstream at datum 3.62 ft lower.
PERIOD OF RECORD.--Water years 1968-1973.
PERIOD OF DAILY RECORD.--
SPECIFIC CONDUCTANCE: Daily instantaneous values collected in
conjunction with suspended-sediment samples, October 1968 to
WATER TEMPERATURE: Daily instantaneous values collected in
conjunction with suspended-sediment samples, October 1967 to
SUSPENDED-SEDIMENT CONCENTRATION AND DISCHARGE: October 1967 to