Mile Long Rapid
Also known as: Mile Long Rapids, Mile-Long Rapids, Rapids 13–20 (high water), Rapids 13–19 (moderate water)
Mile Long is one continuous rapid that starts from debris-flow outwash at Range Canyon (Rapid 13) and extends down to the island at Rapid 20 (Ben Hurt). At high water it behaves as a single, sustained pulse of whitewater spanning eight numbered rapids (13 through 20); at lower flows the sequence separates into stepped drops from Rapid 13 through 19, with Ben Hurt standing as a distinct rapid below. It is the longest sustained stretch of whitewater in Cataract Canyon. Within Mile Long sit two named features: Capsize (Rapid 15) as the technical crux, and the South Seas core (Rapids 16–19). Webb/Belnap/Weisheit describe Mile Long as 'one continuous rapid' at high water.