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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2024
05472500 North Skunk River near Sigourney, IA
LOCATION - Lat 41°18'03.04", long 92°12'16.64" referenced to North American Datum of 1983, in NW 1/4 NE 1/4 SE 1/4 sec.14, T.75 N., R.12 W., Keokuk County, IA, Hydrologic Unit 07080106, on right bank 10 ft downstream from bridge on State Highway 149, 2.2 mi south of Sigourney, 1.2 mi downstream from Cedar Creek, 4.0 mi upstream from Bridge Creek, 19.6 mi upstream from confluence with South Skunk River, and 114.3 mi upstream from mouth of Skunk River.
DRAINAGE AREA - 730 mi².
REVISIONS HISTORY - WSP 1438: Drainage area. WSP 1558: 1946-1947(M).
Revisions: Gage datum was revised to 650.69 ft NAVD88 on May 9, 2023, as determined by a GNSS Level II survey. Gage datum was previously published as 651.53 ft NGVD29 from levels.
Revisions: Gage datum was revised to 650.69 ft NAVD88 on May 9, 2023, as determined by a GNSS Level II survey. Gage datum was previously published as 651.53 ft NGVD29 from levels.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from October 1945 to current year.
GAGE - Water stage recorder. Datum of gage is 650.69 ft above North American Vertical Datum of 1988. Prior to June 10, 1953, non-recording gage at same site and datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in May 1944 reached a stage of about 22.8 ft, from high-water mark, discharge 14,500 ft³/s.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water year 2008.
