The Green River between the Gates of Lodore and Split Mountain should never be mistaken for a simple river. Even today, many a boat ends up pinned on rocks and many a boatmen bruised and battered. Gates of Lodore contains multiple challenging Class III and Class IV rapids while the Yampa River sports many Class III rapids and one Class IV known as Warm Springs Rapid, which has a hydraulic named Maytag that has the tendency to flip boats.

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