LOCATION.-- Lat 40°36'19", long 88°53'56" (NAD of 1927), in SW1/4SW1/4 sec.20, T.25 N., R.3 E., McLean County, Hydrologic Unit 07130004, on right bank 25 ft downstream from highway bridge, 3 mi north of Towanda, 5 mi east of Hudson, and at mile 8.3. | |
DRAINAGE AREA.-- 49.0 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: May 1958 to March 1983. | |
REVISED RECORDS.-- WDR IL-75-1: Drainage area. | |
GAGE.-- Water-stage recorder and steel-sheet piling control. Datum of gage is 723.65 ft above NGVD of 1929 (State Water Survey bench mark). | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,600 ft3/s June 2, 1980, gage height, 11.70 ft, from floodmark; maximum gage height, 12.82 ft Mar. 4, 1979, backwater from ice; no flow for many days in most years. | |