Best brook trout lakes in Idaho
14 Idaho waters list brook trout (official records or labelled estimates). Ranked below by size and depth-data quality, leading with the waters in our reviewed search catalog — open any water to see exactly where to fish it: depth contours, scored spots with plain-English reasons, seasonal windows and bait picks. The native char of cold ponds and streams. Needs the coldest, cleanest water in the lake.
- Henrys Lake — 18 ft · Approximated contours · Rainbow Trout, Brook Trout, Cutthroat TroutWhy #1: mapped size signal; check the water page for depth coverage · no verified access record attached
- Cedar Creek Reservoir — 37 ft · Approximated contours · Rainbow Trout, Coho Salmon, Steelhead, Brook TroutWhy #2: mapped size signal; check the water page for depth coverage · no verified access record attached
- Treasureton Reservoir — 13 ft · Approximated contours · Rainbow Trout, Brook Trout, Cutthroat TroutWhy #3: mapped size signal; check the water page for depth coverage · no verified access record attached
- Kelso Lake — 48 ft · Approximated contours · Bluegill, Rainbow Trout, Chinook Salmon, Brown TroutWhy #4: mapped size signal; check the water page for depth coverage · no verified access record attached
- Bull Trout Lake — 46 ft · Approximated contours · Rainbow Trout, Chinook Salmon, Coho Salmon, Brook TroutWhy #5: mapped size signal; check the water page for depth coverage · no verified access record attached
- Round Lake — 36 ft · Approximated contours · Rainbow Trout, Brook Trout, Cutthroat TroutWhy #6: mapped size signal; check the water page for depth coverage · no verified access record attached
- Antelope Lake — 31 ft · Approximated contours · Rainbow Trout, Yellow Perch, Brown Trout, Brook TroutWhy #7: mapped size signal; check the water page for depth coverage · no verified access record attached
…plus 7 more Idaho waters holding brook trout.
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How to use this ranking
The order is a map-planning ranking, not a claim about today's fish population. It favors larger mapped waters and gives survey-backed contours a three-times data-quality boost. Agency population surveys, current regulations, access and recent conditions should make the final decision.
Compare maximum depth across 37,233 lake records · See Idaho waters with public access data
When to fish brook trout in Idaho
- Spring 2–15 ft — Ice-out scatters brookies along shorelines and inflow mouths, feeding on the first insect activity.
- Summer 10–30 ft — Brookies hold where the coldest water is — spring holes, deep basin edges and inflow plumes.
- Fall 2–15 ft — Fall is the show: brilliant spawning colors on gravel shoals and inflow gravel.
- Winter 3–20 ft — A classic ice-fishing target — active all winter in shallow to mid-depth water.
Also in Idaho: best largemouth bass lakes · best smallmouth bass lakes · best crappie lakes · best bluegill lakes · best channel catfish lakes · best rainbow trout lakes · best yellow perch lakes · best chinook salmon lakes · best coho salmon lakes · best steelhead lakes · best lake trout lakes · best brown trout lakes · best kokanee lakes · best lake whitefish lakes · best cutthroat trout lakes
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