The Grand Canyon stretch of the Colorado River often uses a different rating system. 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).
People Also Ask
The Grand Canyon is rated Class IV with few Class V rapids and numerous Class I – III rapids as well.
Whirlpool Rapids Gorge—Niagara River, New YorkThe 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.
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.
Class IV Rapids - Whitewater with Obstacles and More Technical Skills » Larger waves, narrow passages, and multiple obstacles to avoid requiring precise maneuvering to avoid upset.
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.
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.
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.
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.
Upper Tuolumne River (Cherry Creek), CaliforniaCherry 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.
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.
Cherry Creek—Upper Tuolumne, CaliforniaA whopping 15 Class V rapids punish paddlers from mid-summer to September, because the high flows of spring make Cherry Creek too dangerous. Be prepared for drops, undercurrents and lots of boulders on this tough and technical section.
Futaleufu River, ChileA 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.
Located near North Carolina's southern boundary, the Green River (a French Broad tributary) is 60 miles long. It's highly regarded for whitewater sports, with great runs for novices (Class II-III) and experienced rafters (Class V).