LOCATION.-- Lat 41°51'39", long 87°56'52" (NAD of 1927), in SW1/4SE1/4 sec. 14, T. 39 N., R. 11 E., Du Page County, Hydrologic Unit 07120004, on upstream side of bridge on frontage road just upstream from bridge on State Highway 38, 0.5 mi north of Oakbrook, 0.5 mi south of Elmhurst.

DRAINAGE AREA.-- 100 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

PARTIAL RECORD: Annual maximum, water years 1960 to 1976.

GAGE.-- Crest-stage gage. Datum is 655.71 ft above NGVD of 1929 (655.42 ft NAVD 1988).

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1790 ft³/sec, August 27, 1972, gage height, 4.48 ft.

EXTREMES OUTSIDE PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Flood of March 22, 1948 reached a stage of 3.89 ft, discharge 1,560 ft³/s. Flood of April 26, 1950 reached a stage of 2.99 ft, discharge 1,250 ft³/s. Flood of October 10, 1954 reached a stage of 3.39 ft, discharge 1,380 ft³/s. Flood of July 13, 1957 reached a stage of 2.19 ft, discharge 1,010 ft³/s.