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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.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2025
05463500 Black Hawk Creek at Hudson, IA
LOCATION - Lat 42°24'27.95", long 92°27'47.69" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 NE 1/4 sec.27, T.88 N., R.14 W., Black Hawk County, IA, Hydrologic Unit 07080205, on left bank 35 ft downstream from bridge on State Highway 58, 0.2 mi northwest of Chicago and Great Western Railway tracks, at western edge of Hudson, 4.5 mi upstream from Prescotts Creek, and 12.5 mi upstream from mouth.
DRAINAGE AREA - 303 mi².
REVISIONS HISTORY -
WSP 1438: Drainage area.
Period of Feb. 13, 2024 to Apr. 9, 2024 was revised due to the timing of a shift.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from April 1952 to September 1995, October 2001 to current year.
GAGE - Water-stage recorder. Datum of gage is 864.96 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.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1988, 1990, 2001-2002, 2011-2012. Period of record includes water-quality data published in USGS annual reports and various project reports.
