Whitewater Rafting Class Levels Explained
Whitewater rapids are classified on a I-VI scale by the International Scale of River Difficulty. Most commercial rafting trips operate on Class II through V. Here's what each class means, who it's for, and what it costs — based on data from 477 outfitters on Whitewatr.
Class I — Easy
Moving water with small waves and riffles. Few obstacles, all easily avoided. Suitable for anyone, including young children and non-swimmers (with life jackets).
Best for: Scenic floats, wine-and-float trips, young kids, people who want to relax on the water.
Age minimum: Any age
Example rivers: Calm stretches of the French Broad River (NC), upper Colorado River scenic sections.
Class II — Novice
Straightforward rapids with wide, clear channels. Some maneuvering required. Occasional small waves and simple obstacles.
Best for: First-timers, families with kids 5+, anyone wanting a taste of whitewater without the intensity.
Age minimum: Typically 5-6+
Example rivers: Lower Nantahala River (NC), Deerfield River (MA), lower Pigeon River (TN).
Class III — Intermediate
Moderate, irregular waves. Strong currents, eddies, and narrow passages. Requires significant maneuvering. The most popular class for commercial rafting.
Best for: First-timers who want real whitewater, active families with kids 7+, groups looking for excitement.
Age minimum: Typically 7-8+
Example rivers: Arkansas River Browns Canyon (CO, Class III), Nantahala River (NC), Kennebec River (ME, Class III-IV at Magic Falls), Wenatchee River and the Sauk (WA, biggest water in May and June).
Class IV — Advanced
Intense, powerful rapids requiring precise boat handling. Large waves, holes, and constricted passages. Risk of long swims if you fall out.
Best for: Experienced rafters, thrill-seekers, fit adults. Prior Class III experience recommended.
Age minimum: Typically 12-14+
Example rivers: Lower Gauley River (WV), Ocoee River Middle Section (TN, Class III-IV), Royal Gorge Arkansas River (CO), Clear Creek (CO), Boulder Drop on the main Skykomish River (WA).
Class V — Expert
Extremely long, violent rapids. Large unavoidable waves and holes. Significant hazard to life. Only for expert-level trips with the most experienced guides.
Best for: Experienced whitewater enthusiasts only. These trips require prior Class IV experience and excellent fitness.
Age minimum: Typically 16+
Example rivers: Upper Gauley River (WV), Gore Canyon (CO), Upper Youghiogheny (MD, Class IV-V).
Class Distribution on Whitewatr
Most commercial outfitters offer a range of class levels:
| Class Range | Outfitters |
|---|---|
| Class III-IV | 37 |
| Class III-V | 31 |
| Class II-IV | 28 |
| Class I-IV | 22 |
| Class II-III | 22 |
| Class II-V | 15 |
| Class I-V | 14 |
| Class I-III | 13 |
| Class II-IV+ | 10 |
| Class I-II | 10 |
| Class III | 7 |
| Class I | 4 |
| Class III-IV+ | 2 |
| Class I-IV+ | 2 |
| Class IV | 2 |
| Class III-V+ | 1 |
| Class I-VI | 1 |
| Class II-II+ | 1 |
| Class IV-V | 1 |
Find a trip at the class level you just read about
Class ratings on 223 outfitters in the directory, grouped by the water they actually run.
Class III and under - beginner and family water
Splashy but forgiving. These outfitters run sections a first-timer can handle.
Up to Class IV - the classic step up
Real hydraulics and a swim you'd remember. The most common commercial water.
Rocky Mountain AdventuresFeatured
Fort Collins, CO · Class II-IV
from $85
MAD AdventuresFeatured
Idaho Springs, CO · Class II-IV
Denali Raft Adventures
Denali National Park, AK · Class I-IV
from $109
Independent Whitewater
Salida, CO · Class II-IV+
from $103
New Mexico River Adventures
Embudo, NM · Class II-IV
from $62
Class V - expert water
Continuous, consequential rapids. Most of these trips carry prior-experience requirements.
Data based on 477 verified outfitters on Whitewatr. Last updated August 2026.