What class of rapids does the river have?
(What does class mean?) All rivers are rated, based on level of difficulty. Other than the Grand Canyon (southwestern system), most rivers are rated by an international scale. This ranges from class I (flat water) to VI (suicidal). Class III is of moderate difficulty and suitable for most families. Class IV is more difficult and appeals to the more adventuresome. Class V is the most difficult, but negotiable. However, the consequences for error are also more serious. Class V is only for extreme thrill seekers, who accept the high risk involved, and are in good physical shape.
