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LOCATION.--Lat 41°59'17", long 94°22'36"
referenced to North American Datum of 1927, in SW 1/4 SW 1/4 NW 1/4
sec.20, T.83 N., R.30 W., Greene County, IA, Hydrologic Unit
07100006, on right bank 20 ft downstream from bridge on State Highway
4, 1.9 mi south of Jefferson, 0.1 mi downstream from Drainage Ditch
33 and 40, 4.7 mi upstream from Hardin Creek, 62.6 mi upstream from
mouth, and 92.6 mi upstream from mouth of Raccoon River. (map)
DRAINAGE AREA.--1,619 mi2.
PERIOD OF RECORD.--Discharge records from March 1940 to current
year. Prior to October 1955, published as "Raccoon River near
GAGE.--Water-stage recorder. Datum of gage is 967.09 ft above
National Geodetic Vertical Datum of 1929. Prior to April 22, 1946,
non-recording gage at site 4.0 mi upstream at different datum; April
22 to June 25, 1946, non-recording gage, June 26, 1946, to September
30, 1955, water-stage recorder, and October 1, 1955, to April 30,
1958, non-recording gage, all at same site and datum.
PERIOD OF RECORD.--Water years 2008-2010, 2012.
PERIOD OF DAILY RECORD.--
NITRATE + NITRITE: April 2008 to current year, records
WATER TEMPERATURE: March 2012 to current year, records