Lemhi River below L5 Diversion near Salmon
USGS 13305310 · Oct 18, 2026, 5:00 PM
Every 60 min · daylight
Updated
← Back to mapIdaho Rivers › Eastern Idaho
Premier Idaho trout water with diverse seasonal hatches.
Spring-fed valley river joining the Salmon at Salmon. Largely private access, so published hatch data is sparse. Trout are catch-and-release from December 1 through the Friday before Memorial Day weekend; limit 6 with no cutthroat harvest for the rest of the season. Bull trout are catch-and-release.
Best Season
May – October
River Type
Freestone
Skill Level
Beginner – Intermediate
Best Techniques
Dry Flies, Nymphing
Access
Moderate
Explore fish species associated with the Lemhi River. Each profile includes identification tips, habitat notes, and practical fishing guidance for Idaho anglers.
Review seasonal insect hatches on the Lemhi River, including timing windows and fly pattern suggestions for Idaho fly fishing.
Check current seasons, limits, and special rules for Lemhi River before you go. Regulations change, so always verify with IDFG.
The latest fishing conditions and hatch notes for Lemhi River. Older reports live in the Lemhi River report archive.
These YouTube videos have been hand-curated by our team because we feel they best represent the Lemhi River fishery. Watch for river character, access context, and techniques that translate to your next Idaho trip.
Map data © Mapbox © OpenStreetMap
The Lemhi River supports 2 fish species in our Idaho fishing catalog. Browse each profile for identification tips, seasonal patterns, and how these species are managed on this water.
Fishing guides, outfitters, shuttles, and shops that operate on the Lemhi River.
No verified providers for this river yet. Browse the full directory.
These 1 YouTube videos have been hand-curated by our team because we feel they best represent the Lemhi River fishery. Each pick highlights river character, access, and techniques worth knowing before you fish this Idaho water.
USGS 13305310 · Oct 18, 2026, 5:00 PM
Every 60 min · daylight
The Lemhi River has 8 documented insect hatches across spring, summer, fall, and winter. Review seasonal timing and recommended fly patterns to plan productive days on this Idaho water.
