Kankakee Torrent

Sandstone cliff at Starved Rock State Park, carved by the force of the Kankakee Torrent some 19,000 years ago

The Kankakee Torrent was a catastrophic series of floods that occurred about 19,000 calibrated years ago in the Midwestern United States. It resulted from a breach of moraines forming a large glacial lake fed by the melting of the Late Wisconsin Laurentide Ice Sheet. The point of origin of the flood was Lake Chicago. The landscape south of Chicago still shows the effects of the torrent, particularly at Kankakee River State Park and on the Illinois River at Starved Rock State Park.

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