Rainbow Lake (Deer Lodge) 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 Rainbow Lake (Deer Lodge)

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 Rainbow Lake (Deer Lodge) on the board.

Fishing Rainbow Lake (Deer Lodge): what the data says

14-acre lake in Deer Lodge 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. Here's the year, species by species, as the scoring engine sees it.

Drawn out, this is 14 acres of water rimmed by 0.6 miles of bank. Its 1.1 shoreline index means few bank features; the contours below do the pattern work. 36% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. You'll find it in Deer Lodge County. For a second option, Mystic Lake lies 8 mi southwest.

Walleye fishing at Rainbow Lake (Deer Lodge)

Spring walleye on Rainbow Lake (Deer Lodge) hold shallow, usually 4 to 15 ft. By summer they slide out to 9 to 30 ft, and by winter most fish are in 9 to 30 ft. The chart's best answer is Break off the point — drop-off, 21 ft, prime for fall. Prime time lands in the evening and early morning. The summer box starts with a crawler harness on bottom bouncer or a deep crankbait (trolled).

Season	Depth	Best window	Start at	Go-to baits
Spring	4 to 15 ft	dusk & dawn	Main-lake point (6 ft)	1/8 oz jig + minnow, Hair jig
Summer	9 to 30 ft	dusk & dawn	Break off the point (21 ft)	Crawler harness on bottom bouncer, Deep crankbait (trolled)
Fall	9 to 30 ft	dusk & night	Break off the point (21 ft)	Jigging rap, Jig + big minnow
Winter	9 to 30 ft	dusk & dawn	Deep basin (30 ft)	Jigging spoon + minnow head, Rattle bait

Northern Pike fishing at Rainbow Lake (Deer Lodge)

In spring, northern pike run shallow here, mostly 2 to 8 ft. Midsummer fish sit out in 8 to 20 ft before dropping to 5 to 15 ft for winter. Fall northern pike concentrate at Main-lake point, a prime-rated point around 6 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a bucktail or a weedless spoon over cabbage most summer days.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 8 ft	midday & dawn	open water	#5 inline spinner, Spoon (red/white)
Summer	8 to 20 ft	dawn & dusk	Break off the point (21 ft)	Bucktail, Weedless spoon over cabbage
Fall	6 to 18 ft	midday & dawn	Main-lake point (6 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	5 to 15 ft	midday	Main-lake point (6 ft)	Tip-ups, Large jigging spoon

Yellow Perch fishing at Rainbow Lake (Deer Lodge)

Early season yellow perch use the shallows, holding in 3 to 12 ft. Summer is a 10 to 30 ft game here, winter a 9 to 30 ft one. The chart's best answer is Deep basin — deep basin, 30 ft, prime for fall. 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	open water	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)

Smallmouth Bass fishing at Rainbow Lake (Deer Lodge)

In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 9 to 30 ft for winter. Winter smallmouth bass concentrate at Break off the point, a prime-rated drop-off around 21 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a drop shot (goby/minnow) or a ned rig most summer days.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	dawn & dusk	Main-lake point (6 ft)	Ned rig, Tube jig
Summer	10 to 30 ft	dawn & dusk	Break off the point (21 ft)	Drop shot (goby/minnow), Ned rig
Fall	8 to 25 ft	midday & dawn	Break off the point (21 ft)	Jerkbait, Blade bait
Winter	9 to 30 ft	midday	Break off the point (21 ft)	Blade bait, Hair jig

Rainbow Trout fishing at Rainbow Lake (Deer Lodge)

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 6 to 30 ft. The spot to know is Break off the point, a drop-off in about 21 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 (6 ft)	Inline spinner (silver), Small spoon
Summer	8 to 30 ft	dawn & dusk	Break off the point (21 ft)	Dodger + spoon (deep troll), Flutter spoon
Fall	9 to 30 ft	dawn & dusk	Break off the point (21 ft)	Casting spoon, Jerkbait over shoals
Winter	6 to 30 ft	dawn	Break off the point (21 ft)	Jigging spoon, Tube jig (white)

Lake Trout fishing at Rainbow Lake (Deer Lodge)

The spring pattern is a shallow one: lake trout in 8 to 30 ft. The depth story barely changes: 9 to 30 ft through summer, 8 to 30 ft in winter. The spot to know is Deep basin, a deep basin in about 30 ft of water that rates prime for lake trout in summer. Plan around early morning in the warm months. Summer baits: a white tube jig (deep) or a magnum spoon on downrigger gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	8 to 30 ft	dawn & dusk	Break off the point (21 ft)	Casting spoon over shoals, Jerkbait (shallow)
Summer	9 to 30 ft	dawn	Deep basin (30 ft)	White tube jig (deep), Magnum spoon on downrigger
Fall	6 to 30 ft	dusk & dawn	Main-lake point (6 ft)	Heavy casting spoon, Jigging rap over reefs
Winter	8 to 30 ft	dawn	Deep basin (30 ft)	White tube jig, Airplane jig

Rainbow Lake (Deer Lodge) 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

The chart marks 3 structure features on Rainbow Lake (Deer Lodge); the deepest is Deep basin at about 30 ft.

Deep basin: deep basin, around 30 ft
Break off the point: drop-off, around 21 ft
Main-lake point: point, around 6 ft

Rainbow Lake (Deer Lodge) 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 Rainbow Lake (Deer Lodge) specifically, so confirm the current rules before you fish.

Check the official Montana fishing regulations →

Common questions

How deep is Rainbow Lake (Deer Lodge)?

Rainbow Lake (Deer Lodge) 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 Rainbow Lake (Deer Lodge)?

Anglers target walleye, northern pike, yellow perch, smallmouth bass, rainbow trout, lake trout, crappie, channel catfish on Rainbow Lake (Deer Lodge). 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 Rainbow Lake (Deer Lodge)?

Break off the point is the top-rated area: a drop-off in about 21 ft of water that rates prime for walleye in fall. Open the map above to see every rated spot for each species and season.

When is the best time to fish Rainbow Lake (Deer Lodge)?

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 Rainbow Lake (Deer Lodge)?

Fishing on Rainbow Lake (Deer Lodge) 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

Mystic Lake 8 mi · Upper Seymour Lake 10 mi · Mussigbrod Lake 14 mi · Georgetown Lake 18 mi · Echo Lake (Granite) 21 mi · Lily Lake (Beaverhead) 24 mi · Sand Lake 25 mi · Baldy Lake 26 mi · Bear Lake (Beaverhead) 33 mi · Tendoy Lake 38 mi · Twin Lakes (Beaverhead) 39 mi · Rainbow Lake (Beaverhead) 41 mi

See how Rainbow Lake (Deer Lodge) stacks up: best smallmouth bass lakes in Montana · best walleye lakes in Montana · best northern pike lakes in Montana · best crappie lakes in Montana

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.