USGS Water-Year Summary 2020
05540095 WEST BRANCH DU PAGE RIVER NEAR WARRENVILLE, IL
LOCATION - Lat 41°49'03", long 88°10'17" referenced to North American Datum of 1983, in SE 1/4 NW 1/4 SE 1/4 sec.35, T.39 N., R.9 E., Du Page County, IL, Hydrologic Unit 07120004, on left bank mounted to downstream bridge abutment on Warrenville Road in Warrenville.
DRAINAGE AREA - 90.7 mi².
- WDR IL-75-1: Drainage area.
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1968 to current.
STAGE: Water years 1994 to current.
PARTIAL RECORD: Miscellaneous discharge measurements, water year 1962;
Annual maximum gage heights, water years 1961-76.
CHEMICAL: Water years 1977-91.
GAGE - Water-stage recorder and satellite telemeter. Datum of gage is 676.58 ft NAVD of 1988. Prior to October 1968, nonrecording gage at same site published as site 05540100 at 1988 datum 9.01 ft. higher. From October 1968 to August 2010, at site 0.3 mi upstream at 1988 datum 11.75 ft higher. Concrete control October 1968 to August 2010. Discharges considered equivalent.
EXTREMES FOR PERIOD OF RECORD - SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 4,930 ft³/s, Sept. 14, 2008, from rating curve extended above 3,100 ft³/s, gage height, 19.78 ft, present datum, site then in use; minimum daily discharge, 7.8 ft³/s, Sept. 14, 1971 and Oct. 26, 1971.