The Most Snake Infested Lakes in Indiana

Indiana, also known as “The Hoosier State,” is an abode of outdoor scenery, thanks to outdoor landmarks such as Clifty Falls, Indiana Dunes, and the Brown County State Park. In particular, the state’s bodies of water stand out, from the massive Lake Michigan to the cascading Ohio River. These sites offer endless recreational activities, attracting tourists from far and wide.

However, along with humans, these areas, especially lakes, are home to plenty of wildlife that you need to keep an eye out for. Snakes are among these animals, and Indiana is home to more than 30 native species of snakes, out of which four are venomous. To this end, tourists should know which species of snakes live in which lakes to ensure their swimming, boating, or fishing experience is safe. Be prepared when diving into Indiana's most snake-infested lakes, so you know what to look for when having waterside fun.

Lake Michigan

Starting with a bang, Lake Michigan is one of North America’s famous Great Lakes. Spanning 22,404 sq miles (58,030 sq km), it is the third-largest of the Great Lakes and a popular spot for recreation. This is thanks to an array of waterside parks, such as the Indiana Dunes State Park, known for its beachside views, hiking trails, and notable dunes. In total, Lake Michigan covers 235 square miles (609 sq km) in Indiana, so there is ample space for boating, kayaking, swimming, and more.

Along with being ideal for recreation, the prominent coastline and outdoor areas are also prime habitats for many species of snakes. Around 10 species of snakes are believed to reside in and around Lake Michigan, including the common garter snake, blue racer, northern watersnake, and the Eastern massasauga.

While most of these species are non-venomous, the Eastern massasauga is one to watch out for as it is one of America’s most venomous species. This pit viper ranges from 24 to 30 inches (60 to 75 cm) long and has a grey coloration with large dark patches. A bite from this snake can lead to clotting, internal bleeding, severe pain, and more. As it is a good swimmer, it is always essential to keep an eye out for any Eastern Massasauga snakes. Thankfully, the local population is quite slim, and they aren’t known to be very aggressive in the water.

Patoka Lake

Patoka Lake is a scenic body of water nestled in Southern Indiana near the Hoosier National Forest. This reservoir was created in the late 1970s by the creation of the Patoka Lake Dam, a 145-foot (44 m) high earthen dam. Today, Patoka Lake is the second-largest reservoir in the state, with a surface area of nearly 9,000 acres. It is a popular destination for wildlife watching and fishing thanks to an abundant population of migrating birds and fish. Anglers, in particular, adore this lake for its bass, bluegill, catfish, and walleye population. Moreover, Patoka Lake boasts an archery range, boat ramps, hiking trails, swimming areas, and over 500 camping sites.

Along with fish and birds, the Hoosier National Forest and Patoka Lake are prime breeding grounds for many of Indiana’s snake species. Among the most common are the northern watersnake, the common garter snake, and the grey rat snake. You will likely see the northern watersnake in the water as it is an avid swimmer and can swim far from the shore. This species is also known as the black water snake for its dark coloration but can also be brown or reddish with dark crossbands along its body. While non-venomous, northern watersnakes will bite if threatened, and their saliva contains an anticoagulant that induces bleeding. That said, bites are rarely serious, so you just need to give these swimmers a wide berth.

Monroe Lake

Monroe Lake, the only reservoir in Indiana larger than Patoka Lake, is another of the state’s most snake-infested lakes. It is home to various species of snakes, from the common garter snake to the timber rattlesnake. The timber rattlesnake is one to look out for as it is one of Indiana's few venomous and water-loving snakes. This species of pit viper can grow up to 60 inches (152 cm) long, boasting a yellowish-brown coloration with darker zig-zag crossbands. They are often considered one of North America’s most dangerous snakes due to their high venom yield and long fangs. If bitten, symptoms range from blood loss to nerve damage, which can rarely be fatal. Thankfully, these snakes produce a noticeable rattling sound when threatened, giving you a warning to get away.

As long as you avoid the snakes, Monroe Lake is a dream destination for waterside fun in Indiana. With 10,750 acres of surface area to explore, boating and waterskiing are top activities, and plenty of people are always out on the water. During winter, ice fishing takes the lead, with amazing spots perfect for catching fish and getting that outdoorsy Instagram photo.

Brookville Lake

Brookville Lake is another one of Indiana’s man-made reservoirs. It was created by an earthen dam in 1974. The dam has a total height of 181 feet (55 m) and impounds the East Fork of the Whitewater River, bringing in a steady flow of water. To this end, Brookville Lake has a surface area of more than 5,000 acres, which is more than enough for tons of activities. Fishing, boating, hunting, and hiking are commonplace, and the adjacent Mounds State Recreation Area provides plenty of coastal scenery for tourists.

When it comes to snakes, Brookville Lake is one of the most infested lakes in the state due to its rich fish population and verdant shores. One case, in particular, stands out from 2022 when two boaters found a 4.5-foot-long deceased snake with a fish in its mouth. While believed to be a northern watersnake that lives in the region, the immense length of this specimen makes it quite an outlier. Along with this, reported species include the eastern garter snake and Dekay’s brown snake, both smaller non-venomous snakes that you don’t need to be too afraid of.

Indiana's lakes offer beautiful outdoor experiences, but they are also home to various snake species, both venomous and non-venomous. Whether it is the eastern massasauga in Lake Michigan, the northern watersnake in Patoka Lake, or the timber rattlesnake in Monroe Lake, these snakes are vital parts of their ecosystems. While exploring these waters, staying informed and cautious will help ensure a safe and enjoyable adventure amidst Indiana’s natural beauty.