Many lakes in Illinois are home to a variety of snake species. There are around 40 different types of snakes in the state, with some of the most scenic lakes having a higher concentration. While most are harmless and play an important role in the ecosystem, knowing which lakes have more snakes can be useful.
Rend Lake
Covering 18,900 acres, Rend Lake provides water to both wildlife and nearby communities. It is home to several snake species, including:
- Eastern Ribbon Snake – Recognizable by its stripes, this snake hunts in wetlands and preys on frogs, fish, and insects.
- Northern Water Snake – A non-venomous species well-adapted to aquatic life, feeding on anything in the water.
- Copperhead – A venomous snake that hides in woodland areas near the lake. Its hourglass-patterned body blends well with leaf litter, making it hard to spot. Young copperheads have yellow-tipped tails to lure prey.
Lake Shelbyville
Spanning 11,000 acres, Lake Shelbyville is home to various wildlife, including:
- Eastern Garter Snake – Often found near the water’s edge, it emits a foul odor when threatened. Although its venom is mildly toxic, it does not harm humans.
- Northern Water Snake – Frequently mistaken for a venomous cottonmouth, but it is harmless.
- Smooth Green Snake – A small, bright green snake that prefers hiding in grass. It mainly eats insects and helps control their population.
Clinton Lake
This 4,900-acre lake, surrounded by deer and foxes, is home to:
- Eastern Milk Snake – A non-venomous constrictor with red, white, and black bands. It thrives in rocky areas.
- Common Garter Snake – Recognizable by three horizontal stripes along its body, it feeds on frogs and small fish.
- Hognose Snake – Identified by its unique snout, it is non-venomous and preys on birds, lizards, and amphibians.
Carlyle Lake
One of Illinois’ newest man-made lakes, Carlyle Lake is home to:
- Plain-Bellied Water Snake – A semi-aquatic, non-venomous snake that flattens its body and emits a foul odor to deter predators. It has a bare belly with colors ranging from reddish-brown to gray.
- Rat Snake – A skilled climber that primarily eats rodents but also targets birds and eggs. It can live up to 20 years and is usually non-aggressive.
- Western Fox Snake – A non-venomous species often mistaken for a copperhead due to its similar patterns.
Lake Decatur
With 2,800 acres of water and 30 miles of shoreline, this lake hosts:
- Prairie Kingsnake – A non-venomous species that ambushes lizards, rodents, and other snakes.
- Midland Brown Snake – A small, harmless snake that feeds on slugs and earthworms. Some people even keep it as a pet.
- Diamond-Backed Water Snake – A strong swimmer that feeds on fish and tadpoles. Though non-venomous, it can become aggressive when threatened.
Final Thoughts
If you visit any lake in Illinois, chances are you’ll come across at least one type of snake. Whether you love snakes or just want to be cautious, staying aware of your surroundings is important. Hopefully, this guide helps you recognize which snakes are harmless and which ones you should avoid.
Disclaimer: Our team has meticulously fact-checked this article to ensure accuracy and eliminate any misinformation. We are committed to providing honest, reliable, and trustworthy content for our readers.
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