Understanding the Rapid Classes

When planning a rafting trip it is important to understand the different classes of rapids and the different skill levels required. This might seem like a hefty task, but luckily it is fairly easy once a person understands the basics of each class. The international scale of rapids is a good baseline for understanding the different classes of rapids, the skills needed in each class and difficulties one will face in each class.

The scale starts at Class 1. Class 1 rapids are the easiest class. These rapids have little or no danger to swimmers and can be classified by small water disturbances with a few small waves.

Class 2 rapids are the next classification. Class 2 rapids will still not pose a strong danger to swimmers. They are characterized by small water disturbances with small waves.

Class 3 rapids are going to be for more intermediate experience. Swimmers could be at risk and may require help. These rapids can be recognized by various rocks, holes, currents and waves. Skillful maneuvering is required and care must be taken.

Class 4 rapids are classified as advanced. Swimmers will be at risk and will require help. Strong rapids and fast currents will be present, and it takes skill and multiple maneuvers to get through Class 4 rapids. There will be multiple obstacles as well as rocks and holes.

Class 5 rapids are advanced rapids. There is a very serious risk to swimmers and others may be no help to those who fall in. The rapids will be much longer and require very skillful maneuvering. There will be more obstacles and the obstacles will be longer and harder to get around.

The final class of rapids is the Class 6. Class 6 rapids are classified as commercially unraftable and are rarely attempted. Class 6 rapids often represent the highest extreme of difficulty, unpredictability and danger. Errors in class 6 rapids are costly and severe, and rescue is often impossible.

It is also very important to note that rapid classes can change. Depending on the various water levels, rapids can change from Class 3 to Class 5 or vise versa. Many rivers will have multiple classifications of rapids in a short stretch. If you have experience with rafting through rapids and/or experience guiding a boat, Colorado River Rentals has all the gear you could possibly need for your trip. If you are looking to get more experience on the river before embarking without a guide, check out our guided trips.