USGS Water-Year Summary 2024
05532600 DES PLAINES RIVER AT LYONS, IL
LOCATION - Lat 41°48'21.9", long 87°48'40.4" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NE 1/4 sec.12, T.38 N., R.12 E., Cook County, IL, Hydrologic Unit 07120004, on the downstream side of the 47th Street bridge, 0.6 mi southeast of Lyons, and at mile 42.1.
DRAINAGE AREA - 631.6 mi².
REVISIONS HISTORY - Revisions: Gage datum was updated to 578.64 ft NAVD88 on May 30, 2023, based on GNSS Level II survey using GEOID18.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
STAGE: October 2013 to current.
GAGE - Water-stage recorder and satellite telemeter. Datum of gage is 578.64 ft. NAVD 1988.
EXTREMES FOR PERIOD OF RECORD -
STAGE: Maximum, 22.71ft, May 18, 2020; minimum, 9.35 ft, Oct. 25, 2013.