LOCATION.--Lat 41°58'19", long 91°40'01" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 NE 1/4 sec.28, T.83 N., R.7 W., Linn County, IA, Hydrologic Unit 07080205, on right bank 400 ft upstream from bridge on 8th Avenue in Cedar Rapids, 2.7 mi upstream from Prairie Creek, and 85.4 mi upstream from mouth of Cedar River. (map)

DRAINAGE AREA.--6,510 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD.--Discharge records from October 1902 to current year. Prior to September 1927, monthly mean discharge for some periods published in WSP 1308.

REVISED RECORDS.--WSP 955: 1924. WSP 1308: 1904, 1906-13, 1915, 1917, 1919-24, 1928, 1930. WSP 1438: Drainage area. WSP 1558: 1915-18 (M), 1920 (M), 1922 (M), 1929, 1933, 1943.

GAGE.--Water-stage recorder. Datum of gage is 700.47 ft above National Geodetic Vertical Datum of 1929. Prior to August 20, 1920, non-recording gage at same site and datum.

REMARKS.--Flow affected by city hydroelectric dam, 0.5 mile upstream, since June 1979.

WATER-QUALITY RECORDS

PERIOD OF RECORD.--Water years 1906-1907, 1944-1954, 2008, 2010, 2012.

PERIOD OF DAILY RECORD.--
NITRATE + NITRITE: April 2009 to September 2012, records fragmentary.
WATER TEMPERATURE: Daily instantaneous values collected in conjunction with suspended-sediment samples, January 1944 to September 1954. Daily mean, April to September 2012.
SUSPENDED-SEDIMENT CONCENTRATION AND DISCHARGE: October 1943 to September 1954.

Advanced Hydrologic Prediction Service

National Streamflow Information Program