Yes, there are snakes in and around Lake Michigan. The lake and its surrounding coastal ecosystems provide habitat for several snake species, although they are not all equally associated with the water itself.
Lake Michigan stretches across four states and has an extensive shoreline with beaches, dunes, wetlands, marshes, rocky areas, and connected waterways. These varied environments support different types of snakes, from species that spend much of their time near water to those that prefer sandy or vegetated habitats.
For most visitors, snakes are an occasional wildlife encounter rather than a common part of swimming or spending time at the lake. The species found here also vary considerably in size, behavior, habitat, and potential risk to people.
This article looks at the snakes associated with Lake Michigan and explains which species you may encounter, how closely they are connected to the water, and whether any pose a real danger.
Table of Contents
Quick Reference: Snakes Around Lake Michigan
| Snake | Approx. Adult Size | Lake Michigan Habitat | Water Association | Venomous? |
|---|---|---|---|---|
| Northern Water Snake | 24–55 in | Shorelines, rocky areas, sheltered shallows | High | No |
| Queen Snake | 13.4–36.3 in | Coastal streams, marshes, shallow waterways | High | No |
| Northern Ribbon Snake | 18–38 in | Coastal wetlands, fens, marshes | High | No |
| Eastern Garter Snake | 18–26 in | Dunes, beach grass, wetlands, fields | Low | No |
| Eastern Hog-nosed Snake | 20–33 in | Sandy dunes, beach grass, coastal forests | Low | No |
| Eastern Fox Snake | 3–6 ft | Coastal marshes, dunes, beaches | Low | No |
| Eastern Milk Snake | 24–36 in | Back-dune forests, meadows, coastal woodlands | Low | No |
| Blue Racer | 4–6 ft | Dune edges, fields, open coastal areas | Very Low | No |
| Smooth Green Snake | 14–20 in | Grassy areas, moist fields, dune vegetation | Very Low | No |
| Dekay’s Brown Snake | 9–15 in | Coastal woods, damp soil, marsh edges | Very Low | No |
| Red-bellied Snake | 8–16 in | Moist coastal forests, dune edges, marsh borders | Very Low | No |
| Eastern Massasauga Rattlesnake | 18–30 in | Wetlands, marshes, wet meadows | Very Low | Yes |
Sizes are approximate adult ranges and can vary by individual. Water association describes how closely each species is associated with aquatic or shoreline habitats around Lake Michigan.
Where Do Snakes Live Around Lake Michigan?
Snakes associated with Lake Michigan are most often found in coastal habitats rather than the deep, open lake. The shoreline provides a much wider range of suitable conditions, including places where snakes can find food, shelter, and areas to regulate their body temperature.
Sandy beaches and dunes support species adapted to dry, open environments, while coastal wetlands, marshes, and shallow waterways provide habitat for snakes that depend more heavily on moisture and aquatic prey. Rocky shorelines, breakwaters, and sheltered areas near the water can also attract species such as the Northern Water Snake.
Some snakes live farther inland in woodlands, grasslands, and back-dune areas that remain closely connected to Lake Michigan’s coastal ecosystem. These habitats are still part of the landscape surrounding the lake, even though the snakes may spend little or no time in the water itself.
The exact species found along the shoreline varies around Lake Michigan because the surrounding habitats differ from one location to another. This is why a snake commonly encountered in a wetland may be uncommon on a sandy beach or dune.
What Types of Snakes Are Found Around Lake Michigan?
Lake Michigan’s shoreline and nearby coastal habitats support several different types of snakes. Some are closely associated with water and may swim or hunt in shallow areas, while others are more commonly found in dunes, beach grass, wetlands, forests, and other habitats along the lake.
Northern Water Snake
The Northern Water Snake (Nerodia sipedon) is one of the snakes most closely associated with the shallow waters and shorelines of Lake Michigan. It is a non-venomous, heavy-bodied snake that can be found along parts of the lake where rocky shorelines, sheltered shallows, piers, breakwaters, and other nearshore habitats provide access to both water and dry places for basking.
Adults commonly grow to about 24 to 55 inches (61 to 140 cm) in length. Their bodies are usually brown, gray, or reddish-brown with darker bands or blotches. Around Lake Michigan, their markings can help them blend into rocks, vegetation, and muddy or sandy shoreline areas. They may be seen coiled on rocks or other exposed surfaces close to the water before quickly slipping into the lake when disturbed.
Northern Water Snakes are strong swimmers and may enter shallow Lake Michigan water while hunting. They feed mainly on fish, frogs, and other aquatic animals, making areas near the shoreline particularly useful habitat. They are much more likely to be encountered in calm or sheltered nearshore water than in the cold, deep, open part of Lake Michigan.
Despite their sometimes intimidating appearance, Northern Water Snakes are not venomous and generally try to escape when people approach. If cornered or handled, however, they can bite and release a strong-smelling musk. At Lake Michigan beaches, piers, and rocky shorelines, the safest approach is simply to give the snake plenty of space and allow it to move back toward the water.
Queen Snake
The Queen Snake (Regina septemvittata) is a slender, semi-aquatic snake associated with shallow, moving water rather than the deep waters of Lake Michigan. Around the lake, it is more closely tied to coastal streams, marshy areas, and shallow waterways that connect to or drain toward Lake Michigan.
This snake is usually dark brown or olive with pale yellow stripes along its sides. It is relatively slender compared with the Northern Water Snake and has a specialized diet that consists mainly of freshly molted crayfish. Shallow waterways with suitable rocky or sandy bottoms provide the conditions it needs to find this prey.
Queen Snakes are strong swimmers and spend much of their time in or very close to the water. However, they are not a snake you would normally expect to see swimming across the open waters of Lake Michigan. Their association with the lake is primarily through the shallow coastal waterways and wet habitats connected to the lake.
Because Queen Snakes are relatively secretive and depend on specific aquatic conditions, they are not among the snakes most commonly noticed by people visiting Lake Michigan beaches. If encountered, they are harmless to humans and will generally try to escape rather than confront a person.
Northern Ribbon Snake
The Northern Ribbon Snake (Thamnophis sauritus septentrionalis) is a slender, non-venomous snake associated with wetlands and shallow-water habitats around Lake Michigan. Unlike the heavier Northern Water Snake, it has a narrow body, a long tail, and three light-colored stripes running along its dark back and sides.
Northern Ribbon Snakes are slender snakes that typically grow to about 18 to 38 inches (46 to 97 cm) in length. They are comfortable in and around water and are capable swimmers. Along Lake Michigan, they may occur in coastal wetlands, fens, marshes, and dense vegetation near the shoreline, where they can find small amphibians and other prey. These habitats provide the shallow water and cover they need while keeping them close to the lake’s coastal ecosystem.
Although they can enter shallow water, Northern Ribbon Snakes are not residents of the deep, open waters of Lake Michigan. They are much more closely tied to sheltered wetland habitats where vegetation provides cover and hunting opportunities.
Their slender build and striped pattern make them relatively easy to distinguish from the larger water snakes found along the Lake Michigan shoreline. They are harmless to people and normally retreat into vegetation or water when disturbed.
Eastern Garter Snake
The Eastern Garter Snake (Thamnophis sirtalis sirtalis) is one of the more adaptable snakes found around Lake Michigan. Unlike water-dependent species, it can live in a wide range of habitats along the shoreline, including beach grass, dunes, wetlands, fields, and areas near coastal parks and campgrounds.
It is usually a slender snake with three light-colored stripes running along a darker green, brown, or blackish body. Adults commonly measure about 18 to 26 inches (46 to 66 cm) long. Its coloration allows it to move through grass and low vegetation without being especially noticeable.
Around Lake Michigan, Eastern Garter Snakes are more closely associated with the land surrounding the shoreline than with the lake water itself. They may move through beach grass and dune vegetation, hunt along the edges of wetlands, or use areas of cover near parks and other developed parts of the coast.
They are non-venomous and generally shy around people. If approached on a Lake Michigan beach or trail, an Eastern Garter Snake will usually try to escape into nearby vegetation rather than remain in the open.
Eastern Hog-nosed Snake
The Eastern Hog-nosed Snake (Heterodon platirhinos) is a distinctive non-venomous snake associated with the sandy habitats around Lake Michigan. It is especially well suited to loose soil and sand, where its upturned snout helps it dig for prey such as toads.
Adults are typically about 20 to 33 inches (51 to 84 cm) long and have a thick body and a broad, somewhat triangular head. Their coloration can vary considerably, ranging from gray and brown to olive or reddish shades, often with darker blotches. This variation allows them to blend into the sandy and vegetated landscapes found along parts of the Lake Michigan shoreline.
Eastern Hog-nosed Snakes are more likely to be found in dunes, sandy forests, beach grass, and other dry coastal habitats than in the lake itself. Areas such as the dunes along Lake Michigan provide the loose soil and vegetation they need for shelter and hunting.
This snake is also famous for its dramatic defensive behavior. When threatened, it may flatten its neck, hiss loudly, strike with its mouth closed, and eventually roll onto its back and play dead. Despite this display, it is not venomous and generally poses little danger to people.
Eastern Fox Snake
The Eastern Fox Snake (Pantherophis vulpinus) is a large, non-venomous snake associated with wetlands, marshes, dunes, and other coastal habitats around Lake Michigan. It is particularly tied to the Great Lakes region and can occur in areas where shoreline wetlands and open land provide suitable cover and prey.
Adults can grow to roughly 3 to 6 feet (0.9 to 1.8 meters) long. They typically have a yellowish or tan background with large dark brown blotches along the body. Despite their size and bold pattern, they are harmless to people and are not venomous.
Along Lake Michigan, Eastern Fox Snakes are more likely to be found in coastal marshes, wet meadows, dunes, and beach vegetation than in the lake itself. These habitats provide cover as well as access to small mammals, birds, amphibians, and other prey.
When threatened, an Eastern Fox Snake may vibrate its tail against dry vegetation, producing a buzzing sound that can resemble a rattlesnake. This is a defensive behavior rather than a sign that the snake is venomous. If encountered near Lake Michigan, it is best to leave the snake undisturbed and give it a clear path to escape.
Eastern Milk Snake
The Eastern Milk Snake (Lampropeltis triangulum) is a non-venomous snake that can be found in woodlands, meadows, and other habitats near Lake Michigan’s coastal dunes and shoreline. It is not a water-dependent species, so its connection to the lake comes mainly through the terrestrial habitats surrounding the coast.
Adults are typically about 24 to 36 inches (61 to 91 cm) long, with a gray or tan background and reddish-brown blotches outlined in black. Their markings can make them look similar to some venomous snakes, but Eastern Milk Snakes are harmless to people. They are secretive and often remain hidden beneath logs, rocks, boards, or other cover.
Around Lake Michigan, they are more likely to be encountered in back-dune forests, open fields, and vegetated areas behind the shoreline than directly beside the water. These habitats provide shelter and access to prey such as rodents and other small animals.
Eastern Milk Snakes generally avoid people and are rarely aggressive. If one is encountered near a Lake Michigan trail, dune, or wooded coastal area, it is best to leave it alone and allow it to move away on its own.
Blue Racer
The Blue Racer (Coluber constrictor foxii) is a large, fast-moving, non-venomous snake associated with open habitats along parts of the Lake Michigan shoreline. It is not a water-dwelling snake, but it can occur in sunny fields, dune edges, grasslands, and clearings within the coastal landscape.
Adults can reach about 4 to 6 feet (1.2 to 1.8 meters) in length. They typically have a gray-blue or blue-gray body with a lighter white or yellowish belly. Their long, slender build and speed make them noticeably different from the heavier-bodied water snakes found closer to the lake.
Around Lake Michigan, Blue Racers are more likely to use open areas near dunes and coastal vegetation where they can move quickly and hunt. They feed on a variety of prey, including small mammals, birds, frogs, insects, and other small animals.
Despite their impressive size and speed, Blue Racers are not venomous. They usually try to escape when approached, often moving rapidly into nearby vegetation or cover rather than confronting people.
Smooth Green Snake
The Smooth Green Snake (Opheodrys vernalis) is a small, slender, non-venomous snake associated with grassy and moist habitats near Lake Michigan’s coastal areas. Its bright green coloration helps it blend into grass, low vegetation, and other plants found along the edges of dunes and open coastal landscapes.
Adults are usually about 14 to 20 inches (36 to 51 cm) long and have a uniformly green body with a pale or yellowish underside. Unlike many of the larger snakes found around Lake Michigan, the Smooth Green Snake feeds mainly on insects and other small invertebrates, including caterpillars, crickets, and spiders.
Around Lake Michigan, it is more likely to be found in grassy clearings, moist fields, dune vegetation, and areas just behind the shoreline than directly beside or in the lake. Dense vegetation provides both cover and the small insects on which it depends.
Smooth Green Snakes are generally docile and avoid confrontation. Their small size and secretive behavior mean that visitors may pass through suitable Lake Michigan habitat without ever noticing one.
Dekay’s Brown Snake
Dekay’s Brown Snake (Storeria dekayi) is a small, non-venomous snake that can occur in moist habitats near Lake Michigan’s coastal areas. It is much more closely associated with damp soil, leaf litter, and ground cover than with the lake water itself.
Adults are typically about 9 to 15 inches (23 to 38 cm) long and have a brown or grayish-brown body with a lighter stripe running along the back. Their small size and muted coloration help them remain hidden beneath leaves, logs, rocks, and other natural cover.
Around Lake Michigan, Dekay’s Brown Snakes may be found in coastal woodlands, damp areas behind dunes, marsh edges, and other places with moist ground and plenty of leaf litter. They feed mainly on soft-bodied prey such as slugs, snails, and earthworms.
These snakes are secretive and pose no significant danger to people. Because they spend much of their time under cover, they are far less noticeable to Lake Michigan visitors than larger species that bask openly near the shoreline.
Red-bellied Snake
The Red-bellied Snake (Storeria occipitomaculata) is another small, non-venomous species associated with moist habitats around Lake Michigan. It is primarily a land-dwelling snake and is more likely to be found in damp coastal vegetation, woodland edges, and areas behind the dunes than in the lake itself.
Adults are generally about 8 to 16 inches (20 to 41 cm) long. They typically have a brown, gray, or reddish-brown back and a distinctive red or orange underside. Their small size and subdued coloring help them remain hidden among leaf litter, fallen branches, and low vegetation.
Around Lake Michigan, Red-bellied Snakes can use moist coastal forests, dune edges, marsh borders, and other areas with damp soil and ground cover. They feed mainly on small soft-bodied animals such as slugs and worms, which are common in these moist environments.
Red-bellied Snakes are secretive and rarely pose any concern to people. If one is encountered along a Lake Michigan trail or in vegetation near the shoreline, it will usually try to hide or move away rather than confront a person.
Eastern Massasauga Rattlesnake
The Eastern Massasauga Rattlesnake (Sistrurus catenatus) is Michigan’s only venomous snake and the most important species to understand when discussing potentially dangerous snakes near Lake Michigan. Adults are typically about 18 to 30 inches (46 to 76 cm) long. It is a small, thick-bodied rattlesnake with dark, rounded or bowtie-shaped blotches and a small rattle at the end of its tail.
Unlike the Northern Water Snake and other species that may be encountered close to the shoreline, the Eastern Massasauga is primarily associated with wetlands, marshes, swamps, and wet meadows. It is not a snake that lives in the deep waters of Lake Michigan, and it is not normally associated with busy sandy beaches where people swim.
The species is generally reclusive and spends much of its time avoiding people. When disturbed, it may remain still or attempt to retreat rather than immediately strike. Bites are uncommon, but because it is venomous, a Massasauga should never be approached, handled, or deliberately disturbed.
For Lake Michigan visitors, the important distinction is that the Eastern Massasauga can occur in coastal and nearby wetland habitats, but encountering one while swimming in the open lake is not a realistic concern. If you see a rattlesnake near a trail, wetland, or shoreline habitat, keep your distance and allow it to move away.
Are There Dangerous Snakes in Lake Michigan?
Most snakes associated with Lake Michigan are non-venomous and not dangerous to people. Species such as the Northern Water Snake, Eastern Garter Snake, Eastern Hog-nosed Snake, and Eastern Fox Snake may bite or use defensive behaviors if they are cornered or handled, but they do not pose the same medical risk as a venomous snake.
The main exception is the Eastern Massasauga Rattlesnake, the only venomous snake native to Michigan. It can occur in wetland habitats associated with parts of the Lake Michigan landscape, but it is reclusive and is not normally encountered in the deep lake or on busy public beaches. A bite can be medically serious, so this snake should always be given plenty of space.
For most people visiting Lake Michigan, the chance of a dangerous snake encounter is very low. Snakes generally avoid people, and the best way to prevent a problem is simply to avoid approaching, touching, or cornering any snake you encounter.
Do Snakes Swim in Lake Michigan?
Yes, some snakes associated with Lake Michigan can swim, but that does not mean they live in the lake’s deep, open waters. Species that are closely tied to aquatic habitats may enter the water to hunt, escape predators, or move between suitable areas along the shoreline.
The Northern Water Snake is one of the strongest swimmers among the snakes found around Lake Michigan. It can move through shallow coastal water and may hunt fish, frogs, and other aquatic prey. Other water-associated species, such as the Northern Ribbon Snake, can also swim and may occur around wetlands and shallow waterways connected to the lake.
Even these water-loving snakes generally remain closer to the shoreline, sheltered shallows, wetlands, and connected waterways. The cold, deep, exposed waters farther offshore are not typical snake habitat.
For swimmers, seeing a snake in Lake Michigan is therefore possible but uncommon. A snake encountered in shallow water near shore is more likely to be hunting, escaping, or moving between nearby habitats than living permanently in the open lake.
What Should You Do If You See a Snake Near Lake Michigan?
If you see a snake near Lake Michigan, the safest approach is to give it plenty of space and let it move away on its own. Most snakes will avoid people when they have an escape route, and there is usually no reason to approach or handle one.
If a snake is in shallow water near the shoreline, simply move away from it rather than trying to chase it out of the water. Snakes such as the Northern Water Snake may swim away when they feel threatened. On beaches, dunes, trails, or wetlands, keep a reasonable distance and avoid blocking the snake’s path.
Never try to pick up, corner, or provoke a snake, even if you believe it is harmless. This is especially important if you cannot identify the species. A defensive bite can occur when a snake feels trapped, and a rattlesnake such as the Eastern Massasauga should never be approached.
If you are bitten by a snake, move away from the animal and seek prompt medical attention. Do not attempt to catch or kill the snake for identification; if it can be safely observed from a distance, its appearance and location can provide useful information to healthcare professionals.