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USGS Surface-Water Annual Statistics for Illinois
The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.
Cook County, Illinois
Hydrologic Unit Code 07120003
Latitude 41°53'18", Longitude 87°37'16" NAD27
Gage datum 579.48 feet above NGVD29
|Water Year||00060, Discharge, cubic feet per second|
** No Incomplete data have been used for statistical calculation