Updated
Idaho Lakes › Upper Snake / Eastern Idaho
Henrys Lake
A shallow, spring-fed trophy trout lake at the head of the Henrys Fork, best right after ice-off and again in October.
Yellowstone Cutthroat Trout
Cutbow Trout
Brook Trout
Overview
Best Season
Late May into June after ice-off, then October until the lake freezes in November.
Lake Character
Shallow, weedy, spring-fed natural lake with fast-growing trout and afternoon wind chop.
Skill Level
Intermediate, stillwater tactics and a boat or float tube help, but shore anglers do well early.
Best Techniques
Strip leeches and damsels on intermediate lines, or hang chironomids and scuds under an indicator.
Boat Access
Ramps at Henrys Lake State Park and Bill Frome County Park, float tube carry-in at the hatchery.
Big Trout, Two-Fish Limit
Henrys Lake is a shallow, nutrient-rich natural lake at 6,470 feet near the Montana line, and its Yellowstone cutthroat, brook trout and cutbow hybrids grow fast and large. Ice usually leaves in early May and the weeks after the Memorial Day opener fish well along the shorelines. Trout drop to the 12-foot weed beds through midsummer, when algae, weed and afternoon wind make the going harder, then fishing picks up lake-wide in October and holds until ice forms in November. Leeches, damsel nymphs, scuds and chironomids stripped or hung under an indicator do most of the work. Special rules apply. The water inside the posted Staley Springs boundary and within 100 yards of Hatchery Creek is closed to fishing. From February 15 through the Friday before Memorial Day weekend, trout fishing is catch-and-release, brook trout included. From the Saturday of Memorial Day weekend through February 14 the trout limit is two, with brook trout counted in that limit, and fishing must stop once two trout are in possession. Launch at Henrys Lake State Park or Bill Frome County Park. Check the current IDFG rules before you go.
Conditions
Live water levels for Henrys Lake from linked gauge stations.
Access
Regulations
No documents attached
Regulation PDFs and lake maps will appear here when published. Always verify current rules with IDFG.
IDFG regulationsGuides & Outfitters
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Helpful Links
Water data is read live and updated regularly. Level and storage trends are calculated from recent daily readings; fields shown as unknown or unavailable have no current data.