Download coordinates as: Coon Creek is a 28.1-mile-long (45.2 km)[1] tributary of the Kishwaukee River in northern Illinois.

[5] In terms of square miles drained, Coon Creek is the second-largest tributary of the Kishwaukee River, behind only the South Branch Kishwaukee River.

[4] This portion of Coon Creek retains very few of the natural instream characteristics such as pools or riffles.

[4] The Coon Creek watershed (technically a subwatershed) is home to at least 34 different species of fish.

[5] The blacknose shiner (Notropis heteropis) is an example of an endangered fish found in the creek.