USGS Water-Year Summary 2020
05479000 East Fork Des Moines River at Dakota City, IA
LOCATION - Lat 42°43'25", long 94°11'35.7" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 SE 1/4 sec.06, T.91 N., R.28 W., Humboldt County, IA, Hydrologic Unit 07100003, on right bank 50 ft upstream from old mill dam in city park, at eastern edge of Dakota City, 500 ft upstream from bridge on County Highway P56, 0.6 mi downstream from bridge on State Highway 3, 3.7 mi upstream from confluence with Des Moines River, and 322.6 mi upstream from mouth of Des Moines River.
DRAINAGE AREA - 1,308 mi².
- WSP 1438: Drainage area. WSP 1508: 1944, 1945-1947(M).
PERIOD OF RECORD - Discharge records from March 1940 to current year. Prior to October 1954, published as "near Hardy".
GAGE - Water-stage recorder. Datum of gage is 1,038.71 ft above National Geodetic Vertical Datum of 1929. Prior to October 1, 1954, non-recording gage at site 8 mi upstream at datum 20.59 ft higher.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of September 1938 reached a stage of 17.4 ft, discharge about 22,000 ft³/s, at site and datum in use from 1940-1954.