LOCATION.-- Lat 41°42'35", long 89°19'28" (NAD of 1927), in SE1/4NE1/4 sec.22, T.20 N., R.10 E., Lee County, Hydrologic Unit 07090007, on left bank at downstream side of bridge on U.S. Highway 52, at southeast edge of Amboy. | |
DRAINAGE AREA.-- 199 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: October 1939 to September 1958. | |
REVISED RECORDS.-- WSP 925: 1940. WSP 1175: 1941-42(M), 1943(P), 1944, 1946, 1948, 1949(P). WSP 1508: 1941, 1945(M). | |
GAGE.-- Water-stage recorder. Datum of gage is 724.14 ft above NGVD of 1929 (levels by Corps of Engineers). Prior to Apr. 3, 1940, wire weight gage at same site and datum. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 6,120 ft3/s Oct. 10, 1954, gage height, 12.26 ft; minimum, 1.3 ft3/s Dec. 10, 1957, result of freeze up. | |