What is a Class 6 river?

Class VI: Extreme and Exploratory Rapids If a river is classified as Class VI it is extremely dangerous. These runs have almost never been attempted and often exemplify the extremes of difficulty, unpredictability and danger. The consequences of errors are very severe and rescue may be impossible.



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Whirlpool Rapids Gorge—Niagara River, New York The Niagara Gorge is a deadly section of exploratory rapids. As the water travels through, it reaches about 30 mph, creating the Class 6 Whirlpool Rapids, some of the most extreme in the entire world.

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The Niagara Gorge is a deadly section of exploratory rapids. As the water travels through, it reaches about 30 mph, creating the Class 6 Whirlpool Rapids, some of the most extreme in the entire world.

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The Niagara Gorge is a deadly section of exploratory rapids. As the water travels through, it reaches about 30 mph, creating the Class 6 Whirlpool Rapids, some of the most extreme in the entire world.

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The Yellowstone River is classified as Class II-III rapids from Yellowstone National Park to Paradise Valley (the first 18 miles of legally navigable whitewater on the Yellowstone River).

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Upper Tuolumne River (Cherry Creek), California Cherry Creek is the gold standard for Class V and is the hardest section of commercially rafted whitewater in the United States. Rapids like Mushroom (V), Toadstool (V), and Lewis's Leap (V) challenge even the most experienced river guides.

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Grand Canyon rapids are rated on a 1-10 scale. Flat water is 1 while tough rapids like Lava Falls or Crystal can be rated 10 at certain water levels. A 10 rating in the canyon is roughly equivalent to a Class V in the standard river scale.

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The deepest section in the Niagara River is just below the falls. It is so deep that it equals the height of the falls above: 52 metres (170 ft.) The Upper Niagara River extends 35 kilometres (22 mi.) from Lake Erie to the Cascade Rapids, which begin 1 kilometre (0.6 mi.)

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What classes of rapids are in the Niagara River?
  • Class I: Easy. Waves small; passages clear; no serious obstacles.
  • Class II: Medium. Rapids of moderate difficulty with passages clear. ...
  • Class III: Difficult. ...
  • Class IV: Very difficult. ...
  • Class V: Extremely Difficult. ...
  • Class VI: Unrunnable.


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In 1971 a fledgling commercial enterprise named the Niagara White Water Raft Company, supported by ARTA made its first successful trips through the Whirlpool Rapids in a white-water pontoon.

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Futaleufu River, Chile A number of river rafting pros and enthusiasts consider it to be one of the most challenging rapids in the world. The white water rafting river is ensconced in the valleys of brooding cliffs. Especially, the Upper Section of the Futaleufu River is navigated by only expert rafters.

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1) Terminator – Futaleufú River, Chile With five Class V rapids, the Futaleufú is known for its big water, but it's Terminator that's considered the biggest and baddest of them all.

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The 31.5-mile section of the river between Hells Canyon Dam and Upper Pittsburg Landing is designated as the Wild river section. Rapids vary from Class II to Class V.

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Lava and Hermit are the biggest and most challenging rapids depending upon the flows and craft being used to run the river. These two rapids have the most flips. Crystal, Horn, and House Rock Rapid also cause many rafters problems.

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Lava Falls is the most famous and most formidable rapid in Grand Canyon National Park. Fabled for its steep drops and highly technical rapid layout, Lava Falls is rated as a Class 10 rapid, the highest rating a rapid can receive under the Grand Canyon's older classification system.

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With eight deaths in 2022, it's now at 325 people lost over the past 55 years. Of those, 106 have drowned just since 2000. But what would you expect from the deadliest river in America? That's right – the Kern is considered the most dangerous river in the United States.

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The Amazon River is the largest river in the world and one of the most dangerous. It has strong currents, rapids, and dangerous wildlife, including piranhas and anacondas. The Rio de la Plata in South America is another dangerous river due to its strong currents and unpredictable nature.

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These rapids are often best saved for those who have rafted before, but that doesn't necessarily rule out the first-time adventure-seekers. If you're in great shape and ready for a physical and mental challenge, you may be ready for Class IV rapids rafting trip on your first river expedition.

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Class VI: Extreme and Exploratory Rapids The consequences of errors are very severe and rescue may be impossible. Only teams of rapids' experts should attempt these rapids at favorable water levels, after close personal inspection and taking all precautions.

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