Lake Blaine 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 on this water are approximations. Never use for navigation. Always check local regulations.

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Recent catches at Lake Blaine

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 Lake Blaine on the board.

Fishing Lake Blaine: what the data says

382-acre lake in Montana. The lake tops out around 131 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. The season-by-season read for each species follows, from the map's own numbers.

Traced from the shoreline, Lake Blaine runs 381 acres with 4.5 miles of edge. Index 1.6 on the shoreline: a few honest points and pockets, nothing labyrinthine. Littoral water — the productive band under ~15 ft — makes up 24% of this chart, as modeled. End to end it runs roughly 1.6 mi, about 0.6 mi across. For a second option, Cabin Lake lies 6 mi south.

Rainbow Trout fishing at Lake Blaine

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 Main-lake point, a point in about 33 ft of water that rates prime for rainbow trout in fall. 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	Shallow bay flat (6 ft)	Inline spinner (silver), Small spoon
Summer	8 to 30 ft	dawn & dusk	Main-lake point (33 ft)	Dodger + spoon (deep troll), Flutter spoon
Fall	10 to 35 ft	dawn & dusk	Main-lake point (33 ft)	Casting spoon, Jerkbait over shoals
Winter	8 to 40 ft	dawn	Break off the point (59 ft)	Jigging spoon, Tube jig (white)

Brown Trout fishing at Lake Blaine

Spring brown trout on Lake Blaine hold shallow, usually 3 to 25 ft. By summer they slide out to 25 to 60 ft, and by winter most fish are in 5 to 35 ft. The chart's best answer is Break off the point — drop-off, 59 ft, prime for summer. Prime time lands in after dark and early morning. The summer box starts with a spoon at the thermocline or a deep stickbait (night).

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 25 ft	dawn & dusk	Main-lake point (33 ft)	Stickbait off planer boards (shallow), Small spoon along mud lines
Summer	25 to 60 ft	night & dawn	Break off the point (59 ft)	Spoon at the thermocline, Deep stickbait (night)
Fall	5 to 30 ft	dusk & dawn	Main-lake point (33 ft)	Jerkbait over gravel, Casting spoon
Winter	5 to 35 ft	dawn	Break off the point (59 ft)	Jigging spoon, Small stickbait (slow)

Brook Trout fishing at Lake Blaine

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: Shallow bay flat, a weed flat in the 6 ft range, good in spring. 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	Shallow bay flat (6 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	open water	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	open water	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Shallow bay flat (6 ft)	Small jigging spoon, Tungsten jig + plastic

Yellow Perch fishing at Lake Blaine

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 Shallow bay flat — weed flat, 6 ft, prime for spring. 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	Shallow bay flat (6 ft)	Small jig + curly tail, Perch-pattern micro crank
Summer	10 to 30 ft	dawn	Shallow bay flat (6 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	12 to 35 ft	midday	Deep basin (111 ft)	Jigging spoon (small), Perch rig / spreader
Winter	15 to 35 ft	midday & dawn	Deep basin (111 ft)	Tungsten jig + spikes, Rattle spoon (small)

Notable structure

The chart marks 6 structure features on Lake Blaine; the deepest is Deep basin at about 111 ft.

Deep basin: deep basin, around 111 ft
Break off the point: drop-off, around 59 ft
Main-lake point: point, around 33 ft
Secondary point: point, around 33 ft
Shallow bay flat: weed flat, around 6 ft
Back-bay flat: weed flat, around 6 ft

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

Check the official Montana fishing regulations →

Common questions

How deep is Lake Blaine?

Lake Blaine is about 131 ft (40 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.

What fish are in Lake Blaine?

Anglers target rainbow trout, brown trout, brook trout, yellow perch on Lake Blaine.

Where is the best fishing spot on Lake Blaine?

Shallow bay flat is the top-rated area: a weed flat in about 6 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 Lake Blaine?

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.

What are the fishing regulations for Lake Blaine?

Fishing on Lake Blaine 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

Cabin Lake 6 mi · Strawberry Lake 7 mi · Half Moon Slough 7 mi · Wildcat Lake 8 mi · Echo Lake (Flathead) 9 mi · Peterson Lake 9 mi · Abbot Lake 9 mi · Lion Lake (Flathead) 10 mi · Mccaffery Lake 10 mi · Black Lake 11 mi · Birch Lake 12 mi · Cliff Lake (Flathead) 12 mi

See how Lake Blaine stacks up: best rainbow trout lakes in Montana · best yellow perch lakes in Montana · best brown trout lakes in Montana · best brook trout lakes in Montana

Browse all Montana fishing maps or see every water on DepthScout. 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.