Clear Lake (Oregon)
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Lava flows from the High Cascades dammed Oregon’s McKenzie River about 3,000 years ago, preserving the area’s pristine forest and creating Clear Lake.8 When explorers searching for a route over the Cascade Mountains discovered the cold, clear lake in 1859, they didn’t realize an entire ecosystem lay just below its surface.
The lake sits at an altitude of over 3,000 feet, so its temperature is near freezing year-round.9 Despite the cold temperatures, divers flock to Clear Lake, nestled in the Willamette National Forest, to swim through the ancient sunken forest that’s home to an array of fascinating plants and animals.
Active underground springs predominantly feed Clear Lake, which gives it its signature clear look. The crystal clear waters even allow you to view the underground forest from above, and you can kayak or paddleboard over the giant trees for a closer look.