Atlas

Colorado River

The Colorado River is the defining waterway of the American Southwest — 1,450 miles from the Rocky Mountain headwaters...

• Cataract Canyon
  Class II–V 41 mi
• Cisco to Dewey Bridge
  Class I 14 mi
• Dewey Bridge to Hittle Bottom
  Class I 8 mi
• Diamond Creek to Pearce Ferry
  Class I–III 51 mi
• Glen Canyon
  Class I 15 mi
• Grand Canyon
  Class III–V 226 mi
• Jackass Canyon
  Class I 10 mi
• Lake Powell
  Class Flatwater 186 mi
• Meander Canyon
  Class I 48 mi
• Moab Daily
  Class I–II+ 13 mi
• Narrow Canyon
  Class I 6 mi
• Ruby–Horsethief Canyon
  Class I–II 25 mi
• The Portal
  Class I 17 mi
• Westwater Canyon
  Class III–IV 17.2 mi

Green River

The Green River is the longest tributary of the Colorado River and the primary feeder of the Colorado Plateau's canyon...

• A Section
  Class I–II 7 mi
• B Section
  Class I–II 9 mi
• Browns Park
  Class I–II 18 mi
• Desolation Canyon
  Class II–IV 66 mi
• Gray Canyon
  Class II–III 18 mi
• Green River Town Reach
  Class I 10 mi
• Island Park
  Class I 8 mi
• Labyrinth Canyon
  Class I 68 mi
• Lodore Canyon
  Class III–IV 17 mi
• Rainbow Park
  Class I 7 mi
• Seedskadee
  Class I 36 mi
• Split Mountain
  Class III–IV 9 mi
• Stillwater Canyon
  Class I 52 mi
• Swallow Canyon
  Class I–II 12 mi
• Uintah Basin
  Class I 100 mi
• Whirlpool Canyon
  Class II–III 8 mi

Yampa River

The Yampa River is the last major free-flowing tributary of the Colorado River — the only significant river in the...

• Cross Mountain Canyon
  Class III–V 5 mi
• Little Yampa Canyon
  Class I–II
• Lower Yampa Valley
  Class I–II
• Yampa Canyon
  Class III–V 46 mi