![]() Along much of its course, tributaries enter the Kankakee over waterfalls, a phenomenon known as "hanging tributaries". The Kankakee River State Park encompasses all of the types of features that formed as a result of the catastrophic flood event. The Kankakee River also bears several features that are direct results of the catastrophic flood. ![]() When European settlers arrived, one remaining sign of these deposits were sand dunes located along parts of the flood's course. Sand prairies exist where the massive flood waters stopped their movement and deposited large quantities of sand. Another, very different, geologic effect left over from the Kankakee Torrent is the existence of "sand prairies". Most notable today is a region in north-central Illinois known as Starved Rock while most of Illinois is located on a low-lying plain with little variation in elevation, Starved Rock State Park features several canyons which were created in the Kankakee Torrent. Both the Kankakee River and Illinois River largely follow paths carved out by the torrent, a process that is believed to have taken only days. The Kankakee Torrent was responsible for extensive modification of the Kankakee River and Illinois River river valleys and landforms characteristic of megaflooding. Michigan ice lobe at the Valparaiso Moraine location during the Pleistocene Ice Age.
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