LOCATION.-- Lat 40°40'38", long 89°31'52" (NAD of 1927), in SW1/4SE1/4 sec.26, T.26 N., R.4 W., Tazewell County, Hydrologic Unit 07130001, on left bank at upstream side of bridge on State Highway 8, 0.2 mi upstream from Railroad bridge, 3 mi northeast of East Peoria, and at mile 0.4.

DRAINAGE AREA.-- 5.54 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: January 1948 to October 1985. March 1986 to current (Seven month periods March to September).

STAGE: Water years 1994 to current year (Seven month periods-March to September).

PARTIAL RECORD: Miscellaneous discharge measurements, water years 1986-99.

REVISED RECORDS.-- WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder and concrete control. Datum of gage is 505.00 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark) (504.72 ft

NAVD 1988). Prior to Aug. 5, 1948, nonrecording gage at same site and datum.

REMARKS.-- High flow regulated by Fondulac Dam, 0.5 mi upstream effective Sept. 7, 1949.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 560 ft³/s, Mar. 3, 1979, gage height, 4.66 ft, from rating curve extended above 170 ft³/s; no flow for many days in most years.