LOCATION.-- Lat 39°30'24", long 88°31'39" (NAD of 1927), in SE1/4SE1/4 sec.4, T.12 N., R.6 E., Moultrie County, Hydrologic Unit 07140201, on left downstream side of bridge on County Highway 3 (1500 E), 3.3 mi south of Allenville, and at mile 5.8.

DRAINAGE AREA.-- 34.6 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: February 1980 to current year.

STAGE: Water years 1994 to current year. Gage-height record for January 1963 to February 1980 available in files of U.S. Army Corps of Engineers.

REVISED RECORDS.-- WDR IL-81-1: 1980.

GAGE.-- Water-stage recorder and U.S. Army Corps of Engineers satellite telemeter. Datum of gage is 617.00 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers).

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISHCARGE AND STAGE: Maximum discharge, 3,260 ft³/s, May 12, 2002, gage height, 13.38 ft, from rating curve extended above 1,890 ft³/s; no flow for many days in most years.

EXTREMES OUTSIDE PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Flood of July 1971 reached a stage of 13.67 ft, discharge not determined, from U.S. Army Corps of Engineers.