LOCATION.-- Lat 42°09'34", long 87°47'52" (NAD of 1927), in NW1/4SE1/4 sec.35, T.43 N., R.12 E., Lake County, Hydrologic Unit 07120003, on right bank at downstream side of bridge on Clavey Road in Highland Park, and at mile 7.3.

DRAINAGE AREA.-- 21.1 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: September 1967 to current year.

STAGE: Water years 1994 to current year.

REVISED RECORDS.-- WSP 2115: 1968. WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 622.83 ft above NGVD of 1929 (city of Highland Park bench mark).

REMARKS.--Occasional diversion due to pumping upstream of gage.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,230 ft³/s, Oct. 14, 2001, gage height, 9.95 ft; no flow at times in 1988, 1989, 1991, 2000, 2002, and 2003.

EXTREMES OUTSIDE PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Flood of July 1938 reached a stage of 10.6 ft, discharge not determined, from information furnished by Highland Park City Engineer.