“Class” is a whitewater rapid rating based on relative difficulty from Class I (the smallest of rapids and waves) to Class V (extremely difficult rapids). The classification of a river varies with different water levels. Higher water levels may increase the difficulties of rapids, however, higher water occasionally covers rocks sufficiently to wash out rapids. Some rapids become more difficult at lower water levels because more rocks are exposed.

Class I = Easy flow with no rapids. This level is wonderful for sightseeing and soaking up the sun.

Class II = Easy flow with a few splashes of whitewater. This level is great for jumping in and floating downstream.

Class III = Exciting, moderate whitewater but with relatively less chance of spills. Class III is ideal for children aged seven and older, as well as beginners to intermediates looking for manageable thrills.

Class IV = Heavy whitewater, boulder gardens, medium-to-good sized drops, with moderate soaking. Helmets and technical skills are often required.

Class V = Class V offers maximum whitewater, steep drops, massive waves, and lots of hard paddling. Look to be complete soaked throughout the day. Helmets are required as are wetsuits (or drysuits) on occasion.