Clarks Fork Yellowstone
★ Wild & Scenic🌿 Wilderness
Park Co. · 20 mi · Class IV–V
914CFS/ 2.06 ft
Optimal
→Stable
Optimal: 800–3000 CFS · USGS #06207500
⚡Flow data is live from USGS·Rapid classifications and CFS ranges need community verification··Know this river?
20 mi
Length
Class IV–V
Difficulty
800–3000 cfs
Optimal
1,600 cfs
Avg Flow
1,400 cfs
Hist. Median
#06207500
USGS Gauge
National Wild & Scenic River · Absaroka-Beartooth Wilderness

The Clarks Fork of the Yellowstone is Wyoming's premier expert whitewater run — 20 miles of Class IV–V canyon through the Absaroka-Beartooth Wilderness. The river drops through a dramatic granite gorge with continuous technical rapids and mandatory portages.

Trip sections
Upper canyon — Class IV, building rapids
The Box — Class V, technical gorge with mandatory scout
Lower canyon to Clark — Class III–IV, easing gradient
Outfitters
Beartooth Whitewater
Clarks Fork guided expert kayak clinics
72-Hour Flow Forecast
NOAA NWPS
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10-Year Flow Patterns
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Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and trip sections may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level. If you spot an error, use the Improve This River button at the top of the page — your local knowledge is what makes this atlas accurate.