Loon Lake is a glacial lake found in northern Lake County, Illinois, United States. It comprises three lakes; East Loon, West Loon, and North Loon. (North Loon is not connected). It is located near the town of Antioch, IL, near the intersection of Route 83 and Grass Lake Rd. It is home to many different species of fish, birds, reptiles, and amphibians. Some of which are endangered species, included, but not limited to, the blacknose shiner.[1]