Utah · Unknown Co.

Colorado River

· 133 mi · Class
Optimal: 3450–10400 CFS · USGS #09180500
⚠53°F — Cold water — dress for immersion, not air temperature
6,939 avg
2,540CFS
2.31 ft gauge height
Below Optimal
↓Falling slowly (-20 cfs/hr)
⚡Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
Avg flow: 6,939 cfsHist. median: 0 cfsUSGS #09180500
Bureau of Land Management

Westwater Canyon is the first whitewater stretch on the Colorado River in Utah. The canyon is seventeen (17) miles long and includes Class IV rapids. This section is challenging at all water levels and is only recommended for experienced boaters. As with any remote river section, Westwater can be a very humbling and dangerous place if not treated with proper respect and ability (BLM)

10-Year Flow Patterns
See 10 years of flow patterns for this river — historical analysis is a Pro feature.Upgrade to Pro →
Your Optimal Range
Set your personal optimal CFS window per river — custom ranges are a Pro feature.Upgrade to Pro →
Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.

Know the Colorado River? Your local knowledge makes this page better for every paddler, angler, and guide who comes after you.
Improve This River →