Beaver Lake Depth Map & Fishing Spots (MT)

Hatch outlook

Grasshoppers (east-side summer)Active window

Typical here: Jul 1 – Oct 15 · until the hard frosts of mid-October; on the Missouri, August hoppers fish mid-river, not the banks

adultall day in high summer, best when afternoon wind knocks bugs onto the water

Pulls fish to the windward grassy banks and edges for months — fish the bank the wind blows ONTO.

The friendliest crossover of the summer: on lakes, drift the windward bank with a bubble-and-foam-hopper — the bubble's splash doesn't hurt a hopper presentation. On rivers, the same rig dead-drifted along the undercut grass banks, or small gold spinners under the banks between rises.

The event happens over grassy banks, undercut edges and windward shorelines

Spruce MothActive window

Typical here: Jul 20 – Aug 31 · a conifer-forest event — it needs fir and lodgepole on the banks, so it's a Rock Creek / Blackfoot / upper Bitterroot specialty

adultmorning through midday — moths don't enter the water willingly — landings are sporadic and near the conifer banks; fish the imitation LOW in the film with minimal floatant, even fully drowned, with a little movement

When the moths show, just about every run produces — large trout key on them so hard that one pattern carries the whole box for two weeks.

Honest limit: a small drowned-surface moth has no lure analog. The workable rig is a casting bubble with a drowned moth pattern along the timbered banks in the morning; otherwise fish spinners early and late and leave the moth window to the film.

2–3 weeks at best, and day-to-day — fish key on the moths when they show and vanish with them

The event happens over banks under conifers — the moths rarely reach mid-river

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours here are interpolated from real agency depth surveys (state DNR / USACE). Never use for navigation. Always check local regulations.

Loading depth chart…

Recent catches at Beaver Lake

Shared by DepthScout anglers. Exact spots stay private, always.

No shared catches here yet — be the first.Log a catch from the map above and share it to put Beaver Lake on the board.

Fishing Beaver Lake: what the data says

200-acre lake in Flathead 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. Every species below gets its seasonal read from the same numbers driving the chart.

On the chart, Beaver Lake draws 152 acres inside 3.3 miles of shoreline. Index 1.9 on the shoreline: a few honest points and pockets, nothing labyrinthine. About 9% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. End to end it runs roughly 0.9 mi, about 0.7 mi across. You'll find it in Flathead County. Closest neighbour on DepthScout: Little Beaver Lake, 1 mi north of here.

Brook Trout fishing at Beaver Lake

The spring pattern is a shallow one: brook trout in 2 to 15 ft. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Top water on the chart: Break off the point, a drop-off in the 22 ft range, prime in summer. Time it for early morning and the evening. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Secondary point (13 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Break off the point (22 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	Secondary point (13 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Break off the point (22 ft)	Small jigging spoon, Tungsten jig + plastic

Kokanee fishing at Beaver Lake

The spring pattern is a shallow one: kokanee in 10 to 30 ft. As the season builds they drop to 30 to 70 ft, wintering in 20 to 80 ft. Top water on the chart: Break off the point, a drop-off in the 22 ft range, prime in spring. Time it for early morning. Summer baits: a dodger + pink/orange squid on downrigger or a kokanee bug + corn gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	10 to 30 ft	dawn	Break off the point (22 ft)	Small dodger + squid (pink), Wedding-ring spinner + corn
Summer	30 to 70 ft	dawn	Break off the point (22 ft)	Dodger + pink/orange squid on downrigger, Kokanee bug + corn
Fall	5 to 40 ft	dawn	Break off the point (22 ft)	Dodger + squid (deeper red/purple), Small spoon
Winter	20 to 80 ft	dawn	Deep basin (100 ft)	Small glow jig + corn or maggot, Tiny spoon

Largemouth Bass fishing at Beaver Lake

Spring puts largemouth bass in skinny water — 2 to 10 ft is the zone. Warm water sends them out to 8 to 20 ft; cold water stacks them in 15 to 35 ft. Secondary point is the standout, a point at roughly 13 ft, rated prime for fall largemouth bass. Plan around early morning and the evening in the warm months. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 10 ft	dawn & dusk	Shallow bay flat (2 ft)	Spinnerbait, Chatterbait
Summer	8 to 20 ft	dawn & dusk	Main-lake point (16 ft)	Texas-rigged 10" worm, Deep-diving crankbait
Fall	4 to 15 ft	midday & dawn	Secondary point (13 ft)	Squarebill crankbait (shad), Spinnerbait
Winter	15 to 35 ft	midday	Break off the point (22 ft)	Blade bait, Jigging spoon

Yellow Perch fishing at Beaver Lake

Early season yellow perch use the shallows, holding in 3 to 12 ft. Summer is a 10 to 30 ft game here, winter a 15 to 35 ft one. The chart's best answer is Break off the point — drop-off, 22 ft, prime for summer. Best bite is early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	midday & dawn	Back-bay flat (10 ft)	Small jig + curly tail, Perch-pattern micro crank
Summer	10 to 30 ft	dawn	Break off the point (22 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	12 to 35 ft	midday	Break off the point (22 ft)	Jigging spoon (small), Perch rig / spreader
Winter	15 to 35 ft	midday & dawn	Break off the point (22 ft)	Tungsten jig + spikes, Rattle spoon (small)

Rainbow Trout fishing at Beaver Lake

Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 8 to 40 ft. The spot to know is Break off the point, a drop-off in about 22 ft of water that rates prime for rainbow trout in winter. Warm-month bites cluster around early morning and the evening. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	5 to 20 ft	dawn & dusk	Main-lake point (16 ft)	Inline spinner (silver), Small spoon
Summer	8 to 30 ft	dawn & dusk	Break off the point (22 ft)	Dodger + spoon (deep troll), Flutter spoon
Fall	10 to 35 ft	dawn & dusk	Main-lake point (16 ft)	Casting spoon, Jerkbait over shoals
Winter	8 to 40 ft	dawn	Break off the point (22 ft)	Jigging spoon, Tube jig (white)

Notable structure

The chart marks 7 structure features on Beaver Lake; the deepest is Deep basin at about 100 ft.

Deep basin: deep basin, around 100 ft
Shallow feeding flat: feeding flat, around 25 ft
Break off the point: drop-off, around 22 ft
Main-lake point: point, around 16 ft
Secondary point: point, around 13 ft
Back-bay flat: feeding flat, around 10 ft
Shallow bay flat: feeding flat, around 2 ft

Public access & boat ramps

Beaver Lake — ramp (concrete)

Access data: Montana FWP — Fishing Access Sites. Confirm conditions and fees locally before you launch.

Beaver Lake fishing regulations

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 Beaver Lake specifically, so confirm the current rules before you fish.

Check the official Montana fishing regulations →

Common questions

How deep is Beaver Lake?

Beaver Lake 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.

What fish are in Beaver Lake?

Anglers target brook trout, kokanee, largemouth bass, yellow perch, rainbow trout on Beaver Lake.

Where is the best fishing spot on Beaver Lake?

Secondary point is the top-rated area: a point in about 13 ft of water that rates prime for largemouth bass in fall. Open the map above to see every rated spot for each species and season.

When is the best time to fish Beaver Lake?

For brook 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.

What are the fishing regulations for Beaver Lake?

Fishing on Beaver 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.

Nearby waters

Little Beaver Lake 1 mi · Woods Lake 1 mi · Murray Lake 1 mi · Whitefish Lake 2 mi · Skyles Lake 2 mi · Spencer Lake 3 mi · Bootjack Lake (Flathead) 3 mi · Blanchard Lake 4 mi · Tally Lake 7 mi · Lower Stillwater Lake 9 mi · Upper Martin Lake 13 mi · Bailey Lake 13 mi

See how Beaver Lake stacks up: best largemouth bass lakes in Montana · best rainbow trout lakes in Montana · best yellow perch lakes in Montana · best brook trout lakes in Montana

More water nearby: Flathead County fishing maps (55 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.