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Fishing Lost Lake (Carbon): what the data says
10-acre lake near Montana. The lake tops out around 25 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Here is how the season plays out for each species, straight from the data behind the map.
Rainbow Trout fishing at Lost Lake (Carbon)
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. They move out to 7 to 25 ft in summer and finish the year down in 5 to 25 ft. Break off the point is the standout, a drop-off at roughly 5 ft, rated prime for winter rainbow trout. Plan around early morning and the evening in the warm months. A dodger + spoon (deep troll) or a flutter spoon covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Inline spinner (silver), Small spoon |
| Summer | 7 to 25 ft | dawn & dusk | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 7 to 25 ft | dawn & dusk | Casting spoon, Jerkbait over shoals |
| Winter | 5 to 25 ft | dawn | Jigging spoon, Tube jig (white) |
Yellow Perch fishing at Lost Lake (Carbon)
In spring, yellow perch run shallow here, mostly 3 to 12 ft. They move out to 8 to 25 ft in summer and finish the year down in 8 to 25 ft. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for yellow perch in spring. In summer the feeding windows fall in early morning. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 8 to 25 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 8 to 25 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 8 to 25 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Smallmouth Bass fishing at Lost Lake (Carbon)
Spring smallmouth bass on Lost Lake (Carbon) hold shallow, usually 3 to 12 ft. By summer they slide out to 8 to 25 ft, and by winter most fish are in 8 to 25 ft. The spot to know is Break off the point, a drop-off in about 5 ft of water that rates prime for smallmouth bass in winter. Best bite is early morning and the evening. Summer baits: a drop shot (goby/minnow) or a ned rig gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 8 to 25 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 8 to 25 ft | midday | Blade bait, Hair jig |
Notable structure
- Deep basin: deep basin, around 24 ft
- Break off the point: drop-off, around 5 ft
- Main-lake point: point, around 3 ft
- Shallow bay flat: weed flat, around 3 ft
Common questions
How deep is Lost Lake (Carbon)?
Lost Lake (Carbon) is about 25 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Lost Lake (Carbon)?
Anglers target smallmouth bass, rainbow trout, yellow perch on Lost Lake (Carbon).
Where is the best fishing spot on Lost Lake (Carbon)?
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for yellow perch in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Lost Lake (Carbon)?
For rainbow trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Black Canyon Lake · Crescent Lake (Hellroaring Lake #8) · Sliderock Lake · September Morn Lake · First Rock Lake · Moon Lake
See how Lost Lake (Carbon) stacks up: best smallmouth bass lakes in Montana · best rainbow trout lakes in Montana · best yellow perch lakes in Montana
Browse all Montana fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.