Fly Lake (Missoula) 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.

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Recent catches at Fly Lake (Missoula)

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 Fly Lake (Missoula) on the board.

Fishing Fly Lake (Missoula): what the data says

10-acre lake in Missoula County, Montana. The lake tops out around 35 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 is how the season plays out for each species, straight from the data behind the map.

Traced from the shoreline, Fly Lake (Missoula) runs 10 acres with 0.5 miles of edge. Nearly circular (index 1.1), so the story is the bottom, not the bank. 34% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. You'll find it in Missoula County. Closest neighbour on DepthScout: Boulder Lake, 1 mi southwest of here.

Walleye fishing at Fly Lake (Missoula)

Early season walleye use the shallows, holding in 4 to 15 ft. Expect a summer slide to 15 to 35 ft, then a winter hold in 11 to 35 ft. Put Shoreline break first on the milk run — a drop-off near 28 ft that grades prime for fall. In summer the feeding windows fall in the evening and early morning. Tie on a crawler harness on bottom bouncer or a deep crankbait (trolled) and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	4 to 15 ft	dusk & dawn	open water	1/8 oz jig + minnow, Hair jig
Summer	15 to 35 ft	dusk & dawn	Shoreline break (28 ft)	Crawler harness on bottom bouncer, Deep crankbait (trolled)
Fall	11 to 35 ft	dusk & night	Shoreline break (28 ft)	Jigging rap, Jig + big minnow
Winter	11 to 35 ft	dusk & dawn	Deep basin (34 ft)	Jigging spoon + minnow head, Rattle bait

Northern Pike fishing at Fly Lake (Missoula)

Spring puts northern pike in skinny water — 2 to 8 ft is the zone. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Shallow bay flat is the standout, a weed flat at roughly 11 ft, rated prime for winter northern pike. Plan around early morning and the evening in the warm months. A bucktail or a weedless spoon over cabbage covers the summer program.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 8 ft	midday & dawn	Shallow bay flat (11 ft)	#5 inline spinner, Spoon (red/white)
Summer	8 to 20 ft	dawn & dusk	Shallow bay flat (11 ft)	Bucktail, Weedless spoon over cabbage
Fall	6 to 18 ft	midday & dawn	Shallow bay flat (11 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	5 to 15 ft	midday	Shallow bay flat (11 ft)	Tip-ups, Large jigging spoon

Yellow Perch fishing at Fly Lake (Missoula)

Spring yellow perch on Fly Lake (Missoula) hold shallow, usually 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 15 to 35 ft. Put Shallow bay flat first on the milk run — a weed flat near 11 ft that grades prime for spring. The feeding windows run early morning. The summer box starts with a drop-shot micro plastics or a small spoon tipped with worm.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	midday & dawn	Shallow bay flat (11 ft)	Small jig + curly tail, Perch-pattern micro crank
Summer	10 to 30 ft	dawn	Shoreline break (28 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	12 to 35 ft	midday	Deep basin (34 ft)	Jigging spoon (small), Perch rig / spreader
Winter	15 to 35 ft	midday & dawn	Deep basin (34 ft)	Tungsten jig + spikes, Rattle spoon (small)

Smallmouth Bass fishing at Fly Lake (Missoula)

Spring puts smallmouth bass in skinny water — 3 to 12 ft is the zone. Warm water sends them out to 10 to 30 ft; cold water stacks them in 11 to 35 ft. Shoreline break is the standout, a drop-off at roughly 28 ft, rated prime for winter smallmouth bass. Plan around early morning and the evening in the warm months. A drop shot (goby/minnow) or a ned rig covers the summer program.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	dawn & dusk	open water	Ned rig, Tube jig
Summer	10 to 30 ft	dawn & dusk	Shoreline break (28 ft)	Drop shot (goby/minnow), Ned rig
Fall	8 to 25 ft	midday & dawn	Shoreline break (28 ft)	Jerkbait, Blade bait
Winter	11 to 35 ft	midday	Shoreline break (28 ft)	Blade bait, Hair jig

Rainbow Trout fishing at Fly Lake (Missoula)

The spring pattern is a shallow one: rainbow trout in 5 to 20 ft. As the season builds they drop to 8 to 30 ft, wintering in 7 to 35 ft. Top water on the chart: Shoreline break, a drop-off in the 28 ft range, prime in winter. Time it for early morning and the evening. Summer baits: a dodger + spoon (deep troll) or a flutter spoon gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	5 to 20 ft	dawn & dusk	Shallow bay flat (11 ft)	Inline spinner (silver), Small spoon
Summer	8 to 30 ft	dawn & dusk	Shoreline break (28 ft)	Dodger + spoon (deep troll), Flutter spoon
Fall	10 to 35 ft	dawn & dusk	Shoreline break (28 ft)	Casting spoon, Jerkbait over shoals
Winter	7 to 35 ft	dawn	Shoreline break (28 ft)	Jigging spoon, Tube jig (white)

Lake Trout fishing at Fly Lake (Missoula)

Start shallow in spring: lake trout sit in 9 to 35 ft that time of year. They don't go far with the seasons — 11 to 35 ft covers summer, 9 to 35 ft covers winter. Top water on the chart: Deep basin, a deep basin in the 34 ft range, prime in summer. Fish it in early morning and you'll meet the bite. Throw a white tube jig (deep) or a magnum spoon on downrigger until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	9 to 35 ft	dawn & dusk	Shoreline break (28 ft)	Casting spoon over shoals, Jerkbait (shallow)
Summer	11 to 35 ft	dawn	Deep basin (34 ft)	White tube jig (deep), Magnum spoon on downrigger
Fall	7 to 35 ft	dusk & dawn	Shoreline break (28 ft)	Heavy casting spoon, Jigging rap over reefs
Winter	9 to 35 ft	dawn	Deep basin (34 ft)	White tube jig, Airplane jig

Fly Lake (Missoula) also holds crappie (10 to 25 ft in summer), channel catfish (8 to 25 ft in summer). Pick any of them on the map above for rated spots and bait picks.

Notable structure

Count 3 structure marks on this chart. The deepest, Deep basin, sits near 34 ft.

Deep basin: deep basin, around 34 ft
Shoreline break: drop-off, around 28 ft
Shallow bay flat: weed flat, around 11 ft

Fly Lake (Missoula) 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 Fly Lake (Missoula) specifically, so confirm the current rules before you fish.

Check the official Montana fishing regulations →

Common questions

How deep is Fly Lake (Missoula)?

Fly Lake (Missoula) is about 35 ft (11 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 Fly Lake (Missoula)?

Anglers target walleye, northern pike, yellow perch, smallmouth bass, rainbow trout, lake trout, crappie, channel catfish on Fly Lake (Missoula). This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.

Where is the best fishing spot on Fly Lake (Missoula)?

Shoreline break is the top-rated area: a drop-off in about 28 ft of water that rates prime for walleye in fall. Scroll up to the map for the complete spot list by species and season.

When is the best time to fish Fly Lake (Missoula)?

For walleye, the summer bite is best in the evening and early morning. 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 Fly Lake (Missoula)?

Fishing on Fly Lake (Missoula) 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

Boulder Lake 1 mi · Rattlesnake Lake #22 4 mi · Sheridan Lake 5 mi · Little Lake 6 mi · Big Lake 6 mi · Sanders Lake 6 mi · Glacier Lake 6 mi · McKinley Lake 7 mi · Farmers Lake #6 7 mi · Farmers Lake #5 7 mi · Lake Elsina 12 mi · St Marys Lake 13 mi

See how Fly Lake (Missoula) stacks up: best smallmouth bass lakes in Montana · best walleye lakes in Montana · best northern pike lakes in Montana · best crappie lakes in Montana

More water nearby: Missoula County fishing maps (37 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.