Glen 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 Glen 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 Glen Lake on the board.

Fishing Glen Lake: what the data says

259-acre lake in Lincoln County, Montana. The lake tops out around 30 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. Below is the species-by-species picture, pulled from the same data the map uses.

Glen Lake maps at 259 acres behind 2.8 miles of shoreline. The basin is a simple one (shoreline index 1.2) — close to a bowl, so the structure on the chart matters more than the bank. Roughly 31% of the water is 15 ft or less, the band where the food chain lives. The basin spans about 1.2 mi end to end and 0.5 mi across at its widest. It sits in Lincoln County. If the bite dies, Long Lake (Lincoln) is 4 mi to the southwest.

Largemouth Bass fishing at Glen Lake

Come spring, look for largemouth bass tight to the bank in 2 to 10 ft. They move out to 8 to 20 ft in summer and finish the year down in 9 to 30 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 9 ft that scores prime in spring. Best bite is early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait is the honest summer answer here.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 10 ft	dawn & dusk	Shallow bay flat (9 ft)	Spinnerbait, Chatterbait
Summer	8 to 20 ft	dawn & dusk	Shallow bay flat (9 ft)	Texas-rigged 10" worm, Deep-diving crankbait
Fall	4 to 15 ft	midday & dawn	Main-lake point (8 ft)	Squarebill crankbait (shad), Spinnerbait
Winter	9 to 30 ft	midday	Break off the point (30 ft)	Blade bait, Jigging spoon

Kokanee fishing at Glen Lake

Early season kokanee use the shallows, holding in 10 to 30 ft. Even in summer they hold at 9 to 30 ft; winter keeps them in 8 to 30 ft. Put Deep basin first on the milk run — a deep basin near 30 ft that grades prime for spring. In summer the feeding windows fall in early morning. Tie on a dodger + pink/orange squid on downrigger or a kokanee bug + corn and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	10 to 30 ft	dawn	Deep basin (30 ft)	Small dodger + squid (pink), Wedding-ring spinner + corn
Summer	9 to 30 ft	dawn	Deep basin (30 ft)	Dodger + pink/orange squid on downrigger, Kokanee bug + corn
Fall	4 to 30 ft	dawn	Deep basin (30 ft)	Dodger + squid (deeper red/purple), Small spoon
Winter	8 to 30 ft	dawn	Deep basin (30 ft)	Small glow jig + corn or maggot, Tiny spoon

Brook Trout fishing at Glen Lake

Early season brook trout use the shallows, holding in 2 to 15 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 3 to 20 ft. Put Deep basin first on the milk run — a deep basin near 30 ft that grades prime for summer. In summer the feeding windows fall in early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Main-lake point (8 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Deep basin (30 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	Main-lake point (8 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Shallow bay flat (9 ft)	Small jigging spoon, Tungsten jig + plastic

Lake Whitefish fishing at Glen Lake

Start shallow in spring: lake whitefish sit in 9 to 30 ft that time of year. They don't go far with the seasons — 9 to 30 ft covers summer, 9 to 30 ft covers winter. The spot to know is Deep basin, a deep basin in about 30 ft of water that rates prime for lake whitefish in summer. Warm-month bites cluster around early morning. Throw a blade bait vertical or a small jigging spoon until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	9 to 30 ft	midday & dawn	Break off the point (30 ft)	Small jig + waxworm, Blade bait (small)
Summer	9 to 30 ft	dawn	Deep basin (30 ft)	Blade bait vertical, Small jigging spoon
Fall	8 to 30 ft	dusk	Break off the point (30 ft)	Small spoon (gold), Jig + plastic larva
Winter	9 to 30 ft	midday & dawn	Deep basin (30 ft)	Jigging spoon + bead chain, Tungsten jig + waxie

Burbot fishing at Glen Lake

When the water first warms, burbot slide up into 9 to 30 ft. There's no big seasonal slide here — summer means 9 to 30 ft, winter 8 to 30 ft. If you only fish one area, make it Deep basin: a deep basin around 30 ft that scores prime in spring. In summer the feeding windows fall in after dark and midday. Keep a heavy jig + cut bait rigged through the warm months.

Season	Depth	Best window	Start at	Go-to baits
Spring	9 to 30 ft	night & dusk	Deep basin (30 ft)	Glow jigging spoon + cut bait, Rattle bait (dark)
Summer	9 to 30 ft	night & midday	Deep basin (30 ft)	Heavy jig + cut bait
Fall	9 to 30 ft	night & dusk	Deep basin (30 ft)	Glow spoon + minnow head, Blade bait (slow)
Winter	8 to 30 ft	night & dusk	Deep basin (30 ft)	Glow tungsten + cut bait, Rattle spoon + minnow head

Yellow Perch fishing at Glen Lake

The spring pattern is a shallow one: yellow perch in 3 to 12 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 9 to 30 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 9 ft of water that rates prime for yellow perch in spring. Plan around early morning in the warm months. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	midday & dawn	Shallow bay flat (9 ft)	Small jig + curly tail, Perch-pattern micro crank
Summer	10 to 30 ft	dawn	Deep basin (30 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	9 to 30 ft	midday	Deep basin (30 ft)	Jigging spoon (small), Perch rig / spreader
Winter	9 to 30 ft	midday & dawn	Deep basin (30 ft)	Tungsten jig + spikes, Rattle spoon (small)

Glen Lake also holds cutthroat trout (9 to 30 ft in summer), pumpkinseed (2 to 10 ft in summer), rainbow trout (8 to 30 ft in summer), smallmouth bass (10 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.

Notable structure

Count 6 structure marks on this chart. The deepest, Deep basin, sits near 30 ft.

Deep basin: deep basin, around 30 ft
Break off the point: drop-off, around 30 ft
Shallow bay flat: weed flat, around 9 ft
Main-lake point: point, around 8 ft
Back-bay flat: weed flat, around 7 ft
Secondary point: point, around 6 ft

Public access & boat ramps

Glen Lake — ramp (concrete)

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

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

Check the official Montana fishing regulations →

Common questions

How deep is Glen Lake?

Glen Lake is about 30 ft (9 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 Glen Lake?

Anglers target largemouth bass, kokanee, brook trout, lake whitefish, burbot, yellow perch, cutthroat trout, pumpkinseed, rainbow trout, smallmouth bass on Glen Lake.

Where is the best fishing spot on Glen Lake?

Shallow bay flat is the top-rated area: a weed flat in about 9 ft of water that rates prime for largemouth bass in spring. Open the map above to see every rated spot for each species and season.

When is the best time to fish Glen Lake?

For largemouth bass, 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 Glen Lake?

Fishing on Glen 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

Long Lake (Lincoln) 4 mi · Rock Lake 4 mi · Frank Lake 5 mi · BIG THERRIAULT LAKE 6 mi · Little Therriault Lake 6 mi · Tetrault Lake 9 mi · Moran Lake 9 mi · Martin Lake (Lincoln) 10 mi · Murphy Lake 10 mi · Sophie Lake 10 mi · Dickey Lake (Lincoln) 12 mi · Shotnana Lake 12 mi, BC

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

More water nearby: Lincoln County fishing maps (28 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.