LOCATION.-- Lat 41°37'35", long 87°38'05" (NAD of 1927), in NW1/4 sec. 9, T. 36 N., R. 14 E., Cook County, Hydrologic Unit 07120003, at Illinois Central Railroad bridge at Harvey. | |
DRAINAGE AREA.-- 570 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: October 1916 to September 1933. | |
GAGE.-- Staff gage. | |
REMARKS.-- Most of flow from upper 330 mi2 of drainage area is diverted to Lake Michigan above gage. Gage-height records furnished by Sanitary District of Chicago. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,750 ft3/s Mar. 18, 1919, gage height, 10.28 ft; minimum discharge, 3.9 ft3/s July 24, 1932, gage height, 2.71 ft. | |
EXTREMES OUTSIDE PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum stage known, 13.4 ft Mar. 6, 1908. | |