Sauk River
🌿 Wilderness
Skagit / Snohomish Co. · 36 mi · Class I–II
3,170CFS/ 4.47 ft
Optimal→Stable
Water temp: 48°F — Hypothermia risk, wear a drysuit
Optimal: 1500–7000 CFS · USGS #12189500
Length
Difficulty
Optimal
Avg Flow
Hist. Median
USGS Gauge
Glacier Peak Wilderness (headwaters) · Sauk-Suiattle Tribal Reserved Rights
Flows from Glacier Peak Wilderness through ancient old-growth Douglas fir to the Skagit — one of Washington's most wildlife-rich rivers. Class I–III paddling through pristine Cascade foothills with extraordinary salmon viewing in fall and bald eagle congregations in winter. The Sauk-Suiattle Indian Tribe's ancestral home.
Trip sections
White Chuck confluence to Darrington — Class II–III, upper section
Darrington to Rockport — Class I–II, wildlife corridor, best wildlife viewing
Sauk/Skagit confluence — Class I, eagle country in winter
Outfitters
Cascades River Sports
Sauk and Skagit guided float trips
72-Hour Flow Forecast
NOAA NWPSLoading forecast...
10-Year Flow Patterns
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Your Optimal Range
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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.