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.
(map)
DRAINAGE AREA.--1,532 mi2.
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.
REVISED RECORDS.--WSP 1438: Drainage area. WSP 1558: 1915-18, 1919
(M), 1920, 1921-23 (M), 1924-27, 1933, 1934 (M), 1936, 1938, 1947
(M).
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.
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.
This page is undergoing modernization with expected decommissioning as key features
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