Class III–IV+ Rapid · Cataract Canyon
South Seas
Also known as: The South Seas, Rapids 16-19 (high water)
South Seas refers to the core of the Mile Long sequence — specifically Rapids 16 through 19 — which become one continuous, choppy wave train at high water. The name echoes the ocean-swell character of the waves through this zone and is used by commercial guides and in Webb/Belnap/Weisheit to describe the middle-to-lower stretch of Mile Long where individual rapid identities dissolve into a sustained pulse. South Seas sits downstream of Capsize (Rapid 15) and terminates at Ben Hurt (Rapid 20).