What separates Class IV from Class V isn't wave size. An Idaho outfitter on what the whitewater class scale measures, and what it leaves out.

Summer is in full swing, and we’ve got some great news for anyone planning a rafting trip in Idaho. Recent rainfall has pushed the Salmon River back above 10,000 CFS, keeping water levels higher than we typically see this time of year. One of the biggest benefits is that jet boat returns for our multi day Salmon River trips are continuing about a week longer than expected, giving guests the convenience of riding back upstream after their adventure. The higher flows also mean bigger waves,...