Best lakes in Yellowstone National Park are integral to its diverse landscape, featuring over 600 lakes, including four major ones: Yellowstone Lake, Shoshone Lake, Lewis Lake, and Heart Lake. These bodies of water account for a significant portion of the park's total water surface area. The region is characterized by its high elevation, extensive geothermal features, and varied natural habitats. Yellowstone National Park offers a range of aquatic environments, from large, accessible lakes to remote backcountry waters.
Last updated: May 11, 2026
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This is the main attraction and one of the most beautiful geothermal areas in the park. It is located directly on the shore of Yellowstone Lake. The basin is famous for its unique scenery, where hot springs, mud pots, and geysers steam against the backdrop of the cold Yellowstone Lake and the distant Absaroka Mountains. Although there is less geyser activity than in other basins, West Thumb offers a wide variety of hydrothermal features.
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Sour Lake is a well-known geothermal feature in the Mud Volcano Area of Yellowstone National Park. This area is famous for its unusual and extremely acidic mud springs and thermal pools. Sour Lake is one of the most acidic thermal pools in Yellowstone, formed by the geological and microbial processes in the Mud Volcano Area.
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Sour Lake is located in Yellowstone National Park and is a highly acidic body of water. The lake's extreme acidity is because of the microorganisms that live in it; they convert high levels of sulfur in the area into sulfuric acid. This process not only makes the water highly corrosive but also contributes to the lake's distinctive blue color. Sour Lake is not suitable for swimming or any direct contact due to its dangerous acidity so please only take photos and stay on the designated path.
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Highly recommended loop trail - past mud pots and colored hot springs. Right on Yellowstone Lake.
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The crystal blue waters of Black Pool were not always so inviting. Up until 1991 a form of bacteria in the water caused the water to have a dark green, almost black, colour. After a seismic event, the water began to heat up and killed the dark pigment forming bacteria.
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Excellent overview of the colorful thermoaquatic pools and geysers with Yellowstone Lake in the background, just a few steps from the visitor center/restrooms, where you can leave your bike.
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This geyser basin area is not as crowded by tourists as the larger ones nearby. It is nicely laid out, you can walk comfortably on wooden walkways, some of which are elevated, so that you have a nice overview. The proximity to the Yellowstone River is also very impressive.
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At 354 km², Yellowstone Lake is the largest lake in Yellowstone National Park and the largest mountain lake in North America with an altitude of more than 2000 meters. There are many places on the lake that invite you to take a break and enjoy the beauty of the lake with its wonderful mountain panorama.
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For families, West Thumb Geyser Basin on Yellowstone Lake is highly recommended due to its easily accessible, flat paths and picturesque views. Black Pool and Lakeside Spring, also on Yellowstone Lake, are also family-friendly with unique geothermal features.
Yellowstone's lakes are renowned for their geothermal activity. Yellowstone Lake features extensive hot springs and geysers at the West Thumb Geyser Basin, with underwater thermal vents. Shoshone Lake boasts the world's largest backcountry geyser basin, accessible primarily by boat. Heart Lake also has an isolated geyser basin with pristine thermal features. Additionally, Sour Lake is notable for its extreme acidity and distinctive blue color due to microorganisms.
Yes, the West Thumb Geyser Basin on Yellowstone Lake is wheelchair accessible, offering flat paths that allow visitors to enjoy the colorful thermoaquatic pools and geysers with ease.
Yellowstone Lake and Lewis Lake are the only two lakes in the park open to motorboats. Paddle-powered boats like kayaks and canoes are popular on Shoshone Lake and Lewis Lake. Permits are required for all vessels on the park's lakes.
Yellowstone Lake historically hosted thriving native cutthroat trout populations, and efforts are underway for their recovery. Shoshone Lake offers good fishing for non-native lake, brown, and rainbow trout. Lewis Lake is known for introduced brown, rainbow, and lake trout. Heart Lake holds Yellowstone cutthroat trout, lake trout, and mountain whitefish, with angling typically restricted to fly fishing or artificial lures.
Yes, numerous hiking opportunities exist. Shoshone Lake is accessible via trails like the DeLacy Creek Trail or the Shoshone Lake Trail from the Upper Geyser Basin. Heart Lake is reached by a 16.2-mile round-trip hike, offering a secluded backcountry experience. Yellowstone Lake also has many places along its shoreline that invite hiking, such as those around the West Thumb Geyser Basin at Yellowstone Lake.
Beyond exploring the lakes themselves, you can find various outdoor activities nearby. For hiking, consider routes like the Lone Star Trail or Fairy Falls Trail. Cycling is popular on routes such as the Abandoned Railroad Bed Bike Trail. For mountain biking, options include the Lone Star Trail and the Shoshone Lake Loop via DeLacy Creek Trail. You can find more details on these activities in the MTB Trails in Yellowstone National Park, Cycling in Yellowstone National Park, and Easy hikes in Yellowstone National Park guides.
Shoshone Lake is unique as the second-largest lake in Yellowstone and the largest backcountry lake in the lower 48 states that cannot be reached by road. This makes it a true wilderness haven, offering solitude and a higher chance of encountering wildlife. It also features the world's largest geyser basin accessible primarily by boat, located on its western shore.
Yes, the lakes are excellent spots for wildlife viewing. Yellowstone Lake attracts 42 species that feed on native trout, including eagles, pelicans, and otters. Moose, elk, bison, and bears are frequently seen along its shores. The remote nature of Shoshone Lake increases the likelihood of wildlife encounters, while the Heart Lake area is frequented by elk, trumpeter swans, grizzly bears, and gray wolves.
While specific seasonal closures can affect access, generally, the summer months (June to September) offer the best weather for exploring the lakes and engaging in activities like boating, hiking, and fishing. However, for those seeking solitude and a more remote experience, the shoulder seasons might be preferable, though some facilities or roads may be closed.
Yes, for easily accessible areas like the Black Pool in the West Thumb Basin, a large parking lot with toilet facilities is available. The West Thumb Geyser Basin also has convenient parking near its visitor center.
Yellowstone Lake is the largest body of water in the park, known for its extensive geothermal features and vast size, offering diverse activities and wildlife viewing. Lewis Lake, the third largest, is smaller and more easily accessible by road, serving as a popular spot for boating and a primary access point for Shoshone Lake via the Lewis River Channel. Both allow motorboats and offer fishing, but Yellowstone Lake provides a grander, more expansive experience, while Lewis Lake is often seen as a convenient stop with direct access to Lewis Falls.

