USGS Water-Year Summary 2020
05482300 North Raccoon River near Sac City, IA
LOCATION - Lat 42°21'17.1", long 94°59'25.2" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 NW 1/4 sec.13, T.87 N., R.36 W., Sac County, IA, Hydrologic Unit 07100006, on left bank 50 ft upstream from bridge on 300th Street, 4.6 mi south of Sac City, 2.1 mi upstream from Indian Creek, 0.3 mi upstream from Drainage Ditch 73, 135.9 mi upstream from mouth, and 166.4 mi upstream from mouth of Raccoon River.
DRAINAGE AREA - 700 mi².
PERIOD OF RECORD - Discharge records from June 1958 to current year.
GAGE - Water-stage recorder. Datum of gage is 1,146.03 ft above National Geodetic Vertical Datum of 1929. Prior to October 1, 1987, at site 1.7 mi downstream at datum 1.43 ft lower.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 21, 1954, reached a stage of 15.61 ft, from high-water mark, discharge 7,000 ft³/s.
PERIOD OF RECORD - Water years 2008-2010, 2012.
PERIOD OF DAILY RECORD -
NITRATE + NITRITE: March 2008 to current year, records fragmentary.
WATER TEMPERATURE: March 2012 to current year, records fragmentary.