But Yellowstone's thermal features don't flow cold water like you're used to. Don't touch any water in or around thermal features. Never swim, soak, or wade in thermal features.
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The Boiling River is one of very few legal swimming and soaking locations in Yellowstone National Park- but it still requires plenty of caution and care. Located where the Gardner River meets the Boiling River Hot Spring, the Boiling River is safe enough to swim in.
As one of the few places in Yellowstone where you can actually enjoy a swim in the warm water, the Boiling River is ideal for an afternoon soak. Trailhead: Just north of the Montana border at the 45th Parallel Sign.
However, Yellowstone is also an active geothermal area with hot springs emerging at ~92°C (~198°F) (the boiling point of water at Yellowstone's mean altitude) and steam vents reported as high as 135°C (275°F).
But Yellowstone's thermal features don't flow cold water like you're used to. Don't touch any water in or around thermal features. Never swim, soak, or wade in thermal features. More than 20 people have died from intentionally entering or falling into hot springs.
The overburden pressure from the load of the ice cap caused the underlying hydrothermal system to boil at higher temperature than today at a given depth beneath the land surface. Loading the Yellowstone hydrothermal system with ice or lake water is similar to pressure cooking.
The water in Yellowstone looks pristine and clear, but don't be fooled to think that it is clean and safe to drink on it's own. Because of the park's immense wildlife populations, there are animals constantly drinking, defecating and dying in and around these waters.
Abyss Pool, deepest hot spring in Yellowstone. Abyss Pool • Abyss Pool is in the West Thumb Geyser Basin and that is Yellowstone Lake in the background. It is 53-feet deep, this is the deepest pool in Yellowstone National Park.
Swimming is only permitted during designated hours. The Firehole Swim area is closed at night. Bathing suits are required. No food, drink, or alcohol allowed.
Then, with the work of Mother Nature, the Boiling River ceased to exist as we know it as historic flooding in 2022 destroyed the area. Before and after photos show the area where the Boiling River sat is now a rocky area as the floods changed the river channel.
The only campgrounds inside Yellowstone Park that have shower facilities on-site are Grant, Fishing Bridge, and Canyon. Anyone can pay to utilize them. Last year, I believe the cost of about $3.75 per shower. You can also purchase showers at Mammoth Hotel, Old Faithful Inn, and Roosevelt Lodge.
If you plan to do any water activities while at your stay water shoes are a must. Activities could include swimming in the Boiling River in Yellowstone, rafting in Glacier, or kayaking on the many lakes in the area. Make sure your water shoes are secure and won't fall off (flip-flops are not recommended).
The center of the pool is sterile due to extreme heat. “The deep blue color of the water in the center of the pool results from the intrinsic blue color of water, itself the result of water's selective absorption of red wavelengths of visible light.
If you do any hiking or camping in Yellowstone, you SHOULD bring bear spray. Generally, you don't need bear spray when visiting the popular and crowded geyser areas and villages, such as Old Faithful and Canyon Village.