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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
05540160 EAST BRANCH DU PAGE RIVER NEAR DOWNERS GROVE, IL
LOCATION - Lat 41°49'54", long 88°02'52" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 sec.25, T.39 N., R.10 E., Du Page County, IL, Hydrologic Unit 07120004,
on right upstream side of bridge on State Highway 56, 2.2 mi northwest of Downers Grove, and at mile 15.0.
The gage was moved to a temporary location due to bridge construction on Nov. 26, 2024. It is located at the Hidden Lake Forest Preserve. Lat 41°49'32", long 88°03'11
DRAINAGE AREA - 26.6 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1989 to current.
STAGE: Water years 1994 to current.
PARTIAL RECORD: Annual maximum, water years 1955; 1961; 1963-76.
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1989 to current.
STAGE: Water years 1994 to current.
PARTIAL RECORD: Annual maximum, water years 1955; 1961; 1963-76.
GAGE - Water-stage recorder, satellite telemeter, and crest-stage gage. Datum of gage is 659.85 ft. above NAVD of 1988. Prior to July 19, 1989, at datum 12.21 ft higher.
REMARKS - Diurnal fluctuation at low flow caused by sewage-treatment plants upstream from station.
Accuracy of records is discussed in the annual Station Analysis archived at the USGS IL Water Science Center.
EXTREMES FOR PERIOD OF RECORD - SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,720 ft³/s, Aug. 26, 1972, gage height, 16.94 ft, present datum; maximum gage height, 17.79 ft, April 18, 2013, discharge 1,320 ft³/s; minimum, 1.71 ft³/s, Sept. 19, 2024.
