LOCATION.--Lat 42°45'35.9", long 93°37'17.9" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 NE 1/4 sec.25, T.92 N., R.24 W., Wright County, IA, Hydrologic Unit 07080207, on left bank 10 ft downstream from bridge on County Highway C38, 3.8 mi northwest of Rowan, 0.9 mi downstream from Drainage Ditch 123, 10.7 mi downstream from confluence of East and West Branches, and 313.5 mi upstream from mouth. (map)

DRAINAGE AREA.--429 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD.--Discharge records from October 1940 to September 1976, June 1977 to current year.

REVISED RECORDS.--WSP 1308: 1942-43 (M). WSP 1438: Drainage area. WDR IA-80-1: 1978.

GAGE.--Water-stage recorder. Datum of gage is 1,143.35 ft above National Geodetic Vertical Datum of 1929. Prior to October 14, 1948, non-recording gage at same site and datum.

WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water years 1958-1962, 2001-2004, 2009-2010, 2012.

PERIOD OF DAILY RECORD.--
WATER TEMPERATURE: Daily instantaneous values collected in conjunction with suspended-sediment samples, October 1957 to September 1962, records fragmentary.
SUSPENDED-SEDIMENT CONCENTRATION AND DISCHARGE: October 1957 to September 1962.

Advanced Hydrologic Prediction Service

Iowa DNR Geological & Water Survey

National Streamflow Information Program