Westwater Canyon(Colorado) 6,350
Cataract Canyon (Colorado) 15,100
Desolation Canyon(Green) 6,700
Grand Canyon(Colorado) 25,900
Alsek @ Walker Glacier(Alsek) 41,000
Grand Canyon
Heat Acclimatization and Why it Might be a Good Idea Before Rafting the Grand Canyon
During river trips there are variety of problems that can arise from being subjected to, working in, and playing in hot temperatures. These include Heat