Maine · Unknown Co.
West Branch Penobscot River
· 3 mi · Class
Optimal: 1350–4050 CFS · USGS #01042500
5,460CFS
5.02 ft gauge height
Above Optimal↓Falling fast (-950 cfs/hr)(-950 in 3h)
Avg flow: 2,690 cfsHist. median: 0 cfsUSGS #01042500
Private
About
From Seboomook Dam, the West Branch Penobscot delivers three miles of commercial whitewater at flows averaging 2,690 CFS through an optimal range of 1,350–4,050. This privately managed section runs scheduled releases that paddlers track through USGS gauge 01042500. The concentrated gradient and heavy volume make this a destination for rafting outfitters working the controlled releases rather than natural snowmelt or rainfall patterns.
Solunar Fishing Activity
🌒
Waxing Crescent
15% illumination
Poor
★ Moon overhead
8:06 AM
Moonrise
12:11 PM
Moonset
4:01 AM
★ Moon underfoot
8:06 PM
Next full moon: May 3111 days
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 West Branch Penobscot River? Your local knowledge makes this page better for every paddler, angler, and guide who comes after you.
Improve This River →