Grand Canyon Overview
The Colorado River through Grand Canyon is widely considered the world’s premier multi-day whitewater expedition. Over 277 miles the river cuts through nearly two billion years of exposed geology while delivering massive rapids, warm desert camps, and some of the most spectacular scenery on Earth. In 1869, explorer John Wesley Powell led the first documented expedition through the canyon, opening the door to modern river running and exploration of the American Southwest.
River Class / Skill Level
• Class: III–V big water whitewater with powerful hydraulics, large wave trains, and technical maneuvering through major rapids such as Lava Falls.
• Skill Level: Experienced boaters and guided trips are recommended; the scale of the river, remoteness, and powerful rapids require strong river skills and expedition planning.
Season / Permits / Weather
• Boating Season: Year-round due to controlled releases from Glen Canyon Dam.
• Permit Required: Yes — private trips must obtain a permit through the National Park Service weighted lottery system.
• Best Time to Run: Spring and fall offer the most comfortable temperatures and stable flows.
• Weather: Summers can exceed 110°F in the inner canyon, while spring and fall provide mild desert conditions and cooler nights.
Water Levels / River Character
• Typical Flow Range: Approximately 8,000–25,000 cfs depending on dam releases.
• Low Flows: More exposed rocks and technical maneuvering in certain rapids.
• Optimal Flows: Around 12,000–18,000 cfs provides classic big-water wave trains and consistent current.
• High Flows: Large hydraulics and extremely powerful rapids; the river becomes fast and continuous.
• Special Considerations: Cold water released from Glen Canyon Dam remains around 47°F year-round.
Put-In / Take-Out
• Standard Put-In: Lees Ferry — the only legal launch site for Grand Canyon river trips.
• Standard Take-Out: Diamond Creek for most trips, with some continuing to Pearce Ferry at the end of Lake Mead.
• Trip Length: Approximately 277 miles, typically run in 16–21 days for full Grand Canyon expeditions.
