Sign inSign up free Sign inSign up free Sign inSign up freeShared by DepthScout anglers. Exact spots stay private, always.
24-acre lake in Carbon County, Montana. The lake tops out around 100 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. The season-by-season read for each species follows, from the map's own numbers.
On the chart, Martin Lake (Carbon) draws 24 acres inside 0.9 miles of shoreline. Nearly circular (index 1.4), so the story is the bottom, not the bank. About 9% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 0.3 mi long by 0.2 mi wide at the broadest reach. The water lies in Carbon County. For a second option, Lake At Falls lies 1 mi north.
Early season cutthroat trout use the shallows, holding in 3 to 15 ft. Summer is a 10 to 35 ft game here, winter a 10 to 40 ft one. The chart's best answer is Main-lake point — point, 23 ft, prime for fall. Best bite is early morning and the evening. Tie on a trolled spoon (small) or an inline spinner and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | open water | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Main-lake point (23 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (23 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Main-lake point (23 ft) | Small jigging spoon, Marabou jig |
4 pieces of structure are mapped here — Deep basin, around 99 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Montana waters are set by the Montana Fish, Wildlife & Parks — and special regulations can apply to Martin Lake (Carbon) specifically, so confirm the current rules before you fish.
Check the official Montana fishing regulations →
Martin Lake (Carbon) is about 100 ft (30 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target cutthroat trout on Martin Lake (Carbon).
Main-lake point is the top-rated area: a point in about 23 ft of water that rates prime for cutthroat trout in fall. Scroll up to the map for the complete spot list by species and season.
For cutthroat 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.
Fishing on Martin Lake (Carbon) is regulated by the Montana Fish, Wildlife & Parks. Check the official Montana regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lake At Falls 1 mi · Vogel Lake 1 mi · Summit Lake (Carbon) 1 mi · Bergschrund Lake 2 mi · Rainbow Lake (Carbon) 2 mi · Echo Lake (Carbon) 2 mi · Dewey Lake 2 mi · Rimrock Lake 2 mi · Medicine Lake 3 mi · Arch Lake 3 mi · Desolation Lake 3 mi · Big Butte Lake 4 mi
See how Martin Lake (Carbon) stacks up: best cutthroat trout lakes in Montana
More water nearby: Carbon County fishing maps (65 charts). Browse all Montana fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.