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What rapids are Class 6?

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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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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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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William J. Kendall, a policeman from Boston Mass. swam the Whirlpool Rapids on August 22, 1886. He wore only his swimming trunks and a cork life preserver.

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The Grand Canyon is rated Class IV with few Class V rapids and numerous Class I – III rapids as well.

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Great Falls of the Potomac River is a major set of rapids located about 15 miles upstream of Washington, DC. The main Falls lines drop fifty feet in one-tenth of a mile, creating a Class V+ set of waterfalls.

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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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The Class 1-10 system that is used in the Grand Canyon roughly parallels Classes I-V on the International Scale of River Difficulty (ISRD).

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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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While most people can raft Class 4 rapids for their first time, there are several requirements. The minimum age to raft Class 4 rivers, depending on the river and company, is 12-14 years old. Many Class 4s recommend that you are in good physical condition, on the adventurous side, and know how to swim.

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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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Niagara Falls Facts The sound of the Falls has been described as thunder, and is caused by air bubbles breaking as they are slammed up and out of the water. The plunge pool beneath the falls is 35m(100 feet) deep. It is estimated that Niagara Falls erodes at the rate of 1foot per year.

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On August 6, 1918, a dumping scow broke loose from its towing tug in the rapids of the upper Niagara River with Gustav F. Lofberg and James H. Harris aboard. The men opened the bottom dumping doors and the scow grounded in the shallow rapids, only 600 metres from the brink of the Horseshoe Falls.

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There are 5 rapids on the Upper Gauley that gain the whitewater rating of “Class V,” which are the upper level of what can be safely guided down. Each one of these “Big 5” has its own characteristics: Insignificant Rapid is the opposite of its name, but starts small before building into enormous waves.

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Sights Along the Lower New River. This section of the river steps up the pace with 25 rapids ranging from Class II-V. This gives you a range of excitement but doesn't mean there isn't time to catch your breath.

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