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117-acre lake in Carbon County, Montana. The lake tops out around 59 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's the year, species by species, as the scoring engine sees it.
Big Moose Lake maps at 92 acres behind 3.3 miles of shoreline. The 2.4 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. Roughly 82% of the water is 15 ft or less, the band where the food chain lives. Call it 1.2 mi long by 0.3 mi wide at the broadest reach. It sits in Carbon County. Its nearest charted neighbour, Big Moose Lake, is 0 mi to the south.
When the water first warms, rainbow trout slide up into 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 10 ft that scores prime in winter. In summer the feeding windows fall in early morning and the evening. Keep a dodger + spoon (deep troll) or a flutter spoon rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Break off the point (10 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (10 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (10 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (10 ft) | Jigging spoon, Tube jig (white) |
Come spring, look for brook trout tight to the bank in 2 to 15 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 3 to 20 ft. Start at Break off the point. It's a drop-off holding about 10 ft of water and rates prime come summer. Prime time lands in early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (10 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (2 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (10 ft) | Small jigging spoon, Tungsten jig + plastic |
Big Moose Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 54 ft down.
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 Big Moose Lake specifically, so confirm the current rules before you fish.
Check the official Montana fishing regulations →
Big Moose Lake is about 59 ft (18 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 rainbow trout, brook trout on Big Moose Lake.
Break off the point is the top-rated area: a drop-off in about 10 ft of water that rates prime for rainbow trout in winter. Scroll up to the map for the complete spot list by species and season.
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.
Fishing on Big Moose Lake 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.
Big Moose Lake 0 mi, WY · Ivy Lake 1 mi, WY · Widewater Lake (Carbon) 1 mi · Reno Lake 2 mi, WY · Diamond Lake (Carbon) 2 mi · Rock Island Lake 2 mi · Fox Lake (Park) 3 mi · Canyon Lake (Carbon) 3 mi · Gilbert Creek Lake 3 mi, WY · Lost Lake 3 mi, WY · Vernon Lake 3 mi · Farley Lake (Carbon) 4 mi
See how Big Moose Lake stacks up: best rainbow trout lakes in Montana · best brook 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.