LOCATION.-- Lat 41°55'00", long 89°52'50" (NAD of 1927), in NE1/4NE1/4 sec. 11, T. 22 N., R. 5 E., Whiteside County, Hydrologic Unit 07090005, at county highway bridge, 1 mi upstream from unnamed tributary which enters from left, two mi downstream from Otter Creek and 5 mi northwest of Coleta.

DRAINAGE AREA.-- 81.6 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1939 to September 1942.

GAGE.-- Water-stage recorder. Datum of gage is 657.99 ft above NGVD of 1929 (levels by Corps of Engineers, U.S. Army).

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,660 ft³/s June 3, 1941, gage height 9.95 ft, from rating curve extended above 1,600 ft³/s; minimum, 3.9 ft³/s Oct. 4, 6, 1941, gage height, 1.09 ft.