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Idaho · Fremont Co.

Henry's Fork

🎣 Blue-Ribbon Trout
Fremont Co. · 120 mi · Class Riffles–II
Optimal: 600–2000 CFS · USGS #13046000
1,200 avg
1,130CFS
3.16 ft gauge height
Optimal
↓Falling slowly (-10 cfs/hr)
⚡Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
Avg flow: 1,200 cfsHist. median: 1,080 cfsUSGS #13046000
Blue-Ribbon Trout Stream · Harriman State Park

About

Legendary spring creek voted number one trout stream in America by Trout Unlimited. Henry's Fork of the Snake River is a pilgrimage destination for fly fishers worldwide. The Railroad Ranch section in Harriman State Park is holy water — glassy spring-fed flats where massive rainbow trout sip tiny mayflies in water so clear every refusal is visible.

Solunar Fishing Activity
🌒
Waxing Crescent
15% illumination
Poor
★ Moon overhead
11:00 AM
Moonrise
3:16 PM
Moonset
6:44 AM
★ Moon underfoot
11:00 PM
Next full moon: May 3111 days
Outfitters
TroutHunter
Henry's Fork fly shop and lodge, Island Park
Henry's Fork Anglers
Island Park-based guides and gear
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.

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