Class IVCascade Foothills, WA
Skykomish River — Boulder Drop
769 CFS→
Too LowAbout this run
The Sky is the heartbeat of Washington paddling. The Index to Goldbar stretch — known as Boulder Drop — is the state's most iconic Class IV run, a relentless series of powerful hydraulics, boulder sieves, and swift Class III connectors set against the backdrop of the Cascades. It's big Pacific Northwest water: high volume, fast moving, and unforgiving when flows are up. The Sunset Falls section adds Class V for those looking to push it, while Boulder Drop itself is a rite of passage for serious Northwest paddlers.
Known Hazards
- Boulder Drop Rapid — Class IV+ at higher flows, multiple lines
- Sunset Falls — Class V mandatory portage for most paddlers
- High volume means fast swims with few eddies to self-rescue
- Rainfall spikes flows rapidly — always check gauge before driving out
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Post a TripCurrent Flow
769CFS→
stable
Too LowOptimal RangeHigh
Current769 CFS
Optimal Min2,000 CFS
Optimal Max7,000 CFS
StatusToo Low
Water Temp15.9°C / 61°F
7-Day Flow
07/07797 CFS07/13
River Info
RegionCascade Foothills
StateWA
DifficultyClass IV
USGS Gauge12134500
RunnableNo