Mermet Springs and Haigh Quarry are two of the most popular dives in Illinois. Both are flooded quarries, now utilized for water recreation and diving. Their long removed pasts only revealed by the relics beneath.
In Mermet Springs, divers have the opportunity to dive in a Boeing 727. At Haigh Quarry, head to Artifact Park-an area created to teach divers how to engage in underwater archaeology. Whilst diving the springs and quarries there are plenty of bluegill and bass, as well as fantastically large channel catfish.
Cold, blue Lake Michigan offers a surprising amount of shipwrecks to discover. Be sure to make a trip to the Tacoma, a tugboat with a stellar propeller.
The best season for scuba diving in Illinois is from May to September, when water temperatures are warmest and lake access is easiest. Summer months offer the most comfortable conditions, while visibility is typically best at depth. Winter diving is possible for experienced divers with proper drysuits and cold-water training. Careful planning ensures safe and enjoyable diving in Illinois throughout the diving season.
Accessing Illinois dive sites begins with flights to Chicago O’Hare International Airport or Midway Airport. From these hubs, inland lakes and quarries are reachable by car within one to two hours. Local dive centres provide guided dives, equipment rental, and certification courses, including altitude and freshwater training. With excellent road access and established dive communities, diving in Illinois is convenient for both local and visiting divers.
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