LOCATION.--Lat 42°00'32", long 92°51'08"
referenced to North American Datum of 1927, in NW 1/4 SW 1/4 SE 1/4
sec.8, T.83 N., R.17 W., Marshall County, IA, Hydrologic Unit
07080208, on left bank 20 ft upstream from bridge on Shady Oaks Road,
3.0 mi southeast of Marshalltown, and 3.6 mi upstream from mouth.
(map)
DRAINAGE AREA.--118 mi2.
SURFACE-WATER RECORDS
PERIOD OF RECORD.--Discharge records from October 1949 to current
year.
REVISED RECORDS.--WSP 1708: 1950-55, 1957-59.
GAGE.--Water-stage recorder. Datum of gage is 849.44 ft above
National Geodetic Vertical Datum of 1929. Prior to October 1, 1991,
at site 700 ft upstream at same datum.