Michigan · Unknown Co.
St. Marys River
· 248 mi · Class
Optimal: CFS · USGS #
—CFS
Loading…Avg flow: 0 cfsHist. median: 0 cfs
Designated Water Trail · Private
From Sault Ste. Marie to De Tour Village, the St. Marys River carries paddlers past islands large and small, many with different landing points. At the southern end, paddlers can view an underwater shipwreck preserve. (www.michiganwatertrails.org)
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 St. Marys River? Your local knowledge makes this page better for every paddler, angler, and guide who comes after you.
Improve This River →