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Water-Year Summary for Site 05451500

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Available Parameters
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
05451500 Iowa River at Marshalltown, IA
LOCATION - Lat 42°03'57", long 92°54'27" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 SE 1/4 sec.23, T.84 N., R.18 W., Marshall County, IA, Hydrologic Unit 07080208, on right bank 10 ft downstream from bridge on State Highway 14 in Marshalltown, 1,500 ft upstream from Burnett Creek, 2.2 mi upstream from Linn Creek, and 212.7 mi upstream from mouth.
DRAINAGE AREA - 1,532 mi².
REVISIONS HISTORY - WSP 1438: Drainage area. WSP 1558: 1915-1918, 1919(M), 1920, 1921-1923(M), 1924-1927, 1933, 1934(M), 1936, 1938, 1947(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - Discharge records from October 1902 to September 1903, October 1914 to September 1927, October 1932 to current year. Prior to February 1933, monthly mean discharge for some periods published in WSP 1308.
GAGE - Water-stage recorder. Datum of gage is 853.10 ft above National Geodetic Vertical Datum of 1929. October 25, 1902, to August 8, 1903, non-recording gage at site 1 mi upstream at different datum; May 21, 1915, to September 30, 1927, and February 1, 1933, to September 1, 1934, non-recording gage at site 1,000 ft upstream at same datum; September 2-20, 1934, non-recording gage at site 1,000 ft downstream at different datum; September 21, 1934, to June 8, 1973, water-stage recorder at site 900 ft downstream at same datum.
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 1988-1995, 2008, 2012.
PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Daily instantaneous values collected in conjunction with suspended-sediment samples, March 1988 to February 1995, records fragmentary.
WATER TEMPERATURE: Daily instantaneous values collected in conjunction with suspended-sediment samples, March 1988 to February 1995, records fragmentary.
SUSPENDED-SEDIMENT CONCENTRATION AND DISCHARGE: March 1988 to February 1995.