LOCATION.--Lat 41°57'51", long 92°18'47"
referenced to North American Datum of 1927, in SE 1/4 SW 1/4 SW 1/4
sec.25, T.83 N., R.13 W., Tama County, IA, Hydrologic Unit 07080208,
on left bank 20 ft upstream from bridge on U.S. Highway 30, 3.0 mi
south of Elberon, 2.0 mi upstream from Hog Run, and 10.0 mi upstream
from mouth. (map)
DRAINAGE AREA.--201 mi2.
SURFACE-WATER RECORDS
PERIOD OF RECORD.--Discharge records from October 1945 to current
year.
REVISED RECORDS.--WSP 1438: Drainage area. WSP 1558: 1946.
GAGE.--Water-stage recorder. Datum of gage is 781.58 ft above
National Geodetic Vertical Datum of 1929 (Iowa Highway Commission
benchmark). Prior to October 15, 1945, and June 14, 1947, to February
10, 1949, non-recording gage on upstream side of bridge at same
datum.