Station list
05543500 ILLINOIS RIVER AT MARSEILLES, IL
LOCATION.--Lat 41°19'37", long 88°43'03", in SE¼SW¼ sec.13, T.33 N., R.4 E., La Salle County, Hydrologic Unit 07120005,
on right bank 0.5 mi downstream from Marseilles Dam in Marseilles, 6.9 mi upstream from Fox River, and at mile 246.5.
PERIOD OF RECORD.--October 1919 to current year. Prior to October 1939, published as "at Morris."
GAGE.--Water-stage recorder. Datum of gage is 462.91 ft above sea level. October 1919 to January 1935, nonrecording gage at
site at Morris, 16.6 mi upstream, at datum 478.50 ft above sea level. January 1935 to September 1939, water-stage recorder at
site 300 ft downstream from site used 1919-35 and at that datum.
EXTREMES OUTSIDE PERIOD OF RECORD.--A stage of 26.2 ft at Morris occurred in 1831, and a stage of 25.4 ft (ice jam)
occurred at present site on Jan. 21, 1916.