USGS Water-Year Summary 2021
06605000 Ocheyedan River near Spencer, IA
LOCATION - Lat 43°07'41", long 95°12'38" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 SE 1/4 sec.16, T.96 N., R.37 W., Clay County, IA, Hydrologic Unit 10230003, on right bank on downstream side of bridge on County Highway M38, 1.0 mi west of Spencer, and 4.9 mi upstream from mouth.
DRAINAGE AREA - 426 mi².
- WDR US-2008: 2000(P).
PERIOD OF RECORD - Discharge records from October 1977 to current year. Occasional low-flow measurements, water years 1957-1961, 1964, 1966-1968, 1970, 1971, 1974-1977.
GAGE - Water-stage recorder. Datum of gage is 1,311.66 ft above National Geodetic Vertical Datum of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 8, 1953, reached a stage of 12.89 ft, discharge 26,000 ft³/s, on basis of contracted-opening measurement of peak flow.