USGS Water-Year Summary for Site 05473400

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	00060 Discharge(Mean)

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Water year 2025: 2025-10-01 to 2026-09-30

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USGS Water-Year Summary 2025

05473400 Cedar Creek near Oakland Mills, IA

LOCATION - Lat 40°55'31.09", long 91°40'27.18" referenced to North American Datum of 1983, in NW 1/4 SE 1/4 NW 1/4 sec.28, T.71 N., R.7 W., Henry County, IA, Hydrologic Unit 07080107, on left bank 30 ft upstream from bridge on County Highway H46, 3.0 mi west of Oakland Mills, 2.9 mi upstream from Wolf Creek, and 4.4 mi upstream from mouth.

DRAINAGE AREA - 530 mi².

REVISIONS HISTORY -

Nov. 14, 2023 to Mar. 4, 2024: Discharge estimated during ice affected periods was re-drawn to revise previously over-estimated discharge.

Aug. 1- Aug. 23: The shift for QM 449 was originally applied on Aug. 22 rather than Aug. 20. Data was revised to change the shift to be applied on QM 449 on Aug. 20. Data was marked as revised from Aug. 1-23 to account for the difference in calculated discharge as it is being prorated between shifts.

Nov. 6-7: The indicated by QM 451 should have been applied at the peak of the event on Nov. 6 but was instead started at the time of QM 451 on the recession. The shift was changed to begin at the peak and a revision qualifier was applied from the time the prior shift ended to QM 451.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Occasional low-flow measurements, water years 1957-1977; discharge records from July 1977 to current year.

GAGE - Water-stage recorder. Datum of gage is 565.01 ft above North American Vertical Datum of 1988.

REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center. Occasional high-water measurements were made by U.S. Army Corps of Engineers in 1965, 1966, 1970, and 1974 and by U.S. Geological Survey in 1966 and 1967.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of April 22, 1973, reached a stage of 24.09 ft, discharge not determined.