March 18, 2026, 4:01 a.m. PT
Oregon’s abundance of waterways and riparian corridors provide ideal habitats for snakes, offering plenty of shade, food and easy access to water. But where are the slithery reptiles most abundant?
WorldAtlas, an online geography and educational website, recognized this connection in a list of “snake-filled waters in the Pacific Northwest” and highlighted four waterways in Oregon where snakes are more commonly seen.
Oregon is home to 15 native species of snake. Some of the state’s waterways and river corridors attract a variety of snake species, including Oregon’s only venomous snake, the Western rattlesnake.
Here are a few rivers and waterways in Oregon where snakes are most commonly found.
The Willamette River
The Willamette River runs north through western Oregon, flowing through several major cities including Eugene, Springfield, Corvallis, Albany, Salem, Keizer, Newberg, Oregon City and Portland before eventually merging with the Columbia River.
“In this lusher corridor, garter snakes are common near reed beds, while gopher snakes may also use drier banks, grasslands, and other sunlit edges nearby,” World Atlas said.
The side creeks and backwaters of the Willamette River form a diverse habitat that provides snakes with cover and easy access to food.
The publication noted that the river supports “thriving fish, waterfowl and beaver populations,” making it a “deeply diverse ecological corridor” that weaves through some of Oregon’s busiest cities.
Some of the most common snakes found near the river are the northwestern garter snake and the western terrestrial garter snake.
The Columbia River
The Columbia River is the largest river in the Pacific Northwest, with about 309 miles running along Oregon’s northern border and through the Columbia River Gorge.
“The Gorge’s sun-bathed rocky slopes and lush riparian zones create multiple habitats for species such as gopher snakes, common garter snakes, and western rattlesnakes,” World Atlas said. “In late spring and summer in particular, local snakes can often be seen basking on sunlit rocks near the river or moving through grassy fields and marsh edges.
The Columbia River Gorge’s forests, cliffs and riverbanks offer a diverse mix of ecosystems that provide ideal habitat for prey such as rodents, amphibians, fish, and other small snakes and lizards.
The most common types of snakes found along the Columbia River include gopher snakes, garter snakes, rubber boas and occasionally western rattlesnakes.
Klamath Basin
The Klamath Basin is a watershed that runs through southern Oregon, known for its blend of wetlands, marshes, marshes, riparian shorelines, lakes and agricultural land. The basin is anchored by the Upper Klamath Lake and Klamath River and provides critical habitat for some of the state’s birds and reptiles.
Snake habitat extends beyond wetlands, and people are more likely to see snakes during the warmer months, when they can be found basking on rocks, tangled in reeds, or winding through shoreline vegetation.
“Official wildlife checklists for the basin include snakes such as the common garter snake, western terrestrial garter snake, gopher snake, racer, and western rattlesnake, giving the area a strong case as one of the Pacific Northwest’s more snake-prone wetland regions,” World Atlas said.
The Snake River
The aptly named Snake River runs north along the border of Oregon and Idaho, cutting through deep canyons and wide-open farmlands and providing a variety of habitats ideal for snakes.
The Snake River also contains numerous tributaries and oxbow wetlands that offer a reprieve from the area’s desert-like landscapes and create diverse habitats that support a wide range of reptiles and other wildlife.
The river “boasts huge lengths of undeveloped banks, sandy bars, and warm, slow-moving sections that create favorable conditions for western rattlesnakes, garter snakes, gopher snakes, racers, and other species,” World Atlas said.
Ginnie Sandoval is the Oregon Connect reporter for the Statesman Journal. Sandoval is a lifelong Oregonian who covers trending news, entertainment, food and outdoors. She can be reached at gsandoval@statesmanjournal.com or on X at@GinnieSandoval.
