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Rating depth structure for lake trout.
Shared by DepthScout anglers. Exact spots stay private, always.
1,399-acre lake near T7 R8 WELS. The lake tops out around 64 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Species by species, here's what the data says the year looks like.
On the chart, Millimagassett Lake draws 1,398 acres inside 14 miles of shoreline, with 9 islands in the mix. An index of 2.7 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. Roughly 36% of the water is 15 ft or less, the band where the food chain lives. The basin spans about 3.4 mi end to end and 2.2 mi across at its widest. The water lies in Penobscot County. Closest neighbour on DepthScout: Scraggly Lake, 3 mi south of here.
In spring, brook trout run shallow here, mostly 2 to 15 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 3 to 20 ft for winter. Spring brook trout concentrate at Beaver Brook inflow, a prime-rated inflow / creek mouth around 7 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Beaver Brook inflow (7 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Beaver Brook inflow (7 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Beaver Brook inflow (7 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Beaver Brook inflow (7 ft) | Small jigging spoon, Tungsten jig + plastic |
Spring puts lake trout in skinny water — 10 to 40 ft is the zone. As the season builds they drop to 19 to 64 ft, wintering in 16 to 64 ft. Summer lake trout concentrate at Deep basin, a prime-rated deep basin around 62 ft. Warm-month bites cluster around early morning. A white tube jig (deep) or a magnum spoon on downrigger covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Secondary point (11 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 19 to 64 ft | dawn | Deep basin (62 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Secondary point (11 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 16 to 64 ft | dawn | Deep basin (62 ft) | White tube jig, Airplane jig |
Spring puts landlocked salmon in skinny water — 1 to 15 ft is the zone. Warm water sends them out to 25 to 60 ft; cold water stacks them in 10 to 40 ft. Beaver Brook inflow is the standout, an inflow / creek mouth at roughly 7 ft, rated prime for spring landlocked salmon. Plan around early morning and the evening in the warm months. A dodger + streamer down deep or a thin spoon on lead core covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Beaver Brook inflow (7 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 25 to 60 ft | dawn & dusk | Deep basin (62 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Beaver Brook inflow (7 ft) | Casting spoon at the mouths, Streamers |
| Winter | 10 to 40 ft | dawn | Secondary point (11 ft) | Small jigging spoon, Swedish pimple + smelt |
9 pieces of structure are mapped here — Deep basin, around 62 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine IFW — and special regulations can apply to Millimagassett Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Millimagassett Lake is about 64 ft (20 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target brook trout, lake trout, landlocked salmon on Millimagassett Lake.
Beaver Brook inflow is the top-rated area: an inflow / creek mouth in about 7 ft of water that rates prime for brook trout in spring. Open the map above to see every rated spot for each species and season.
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.
Fishing on Millimagassett Lake is regulated by the Maine IFW. Check the official Maine regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Scraggly Lake 3 mi · Millinocket Lake 5 mi · Mountain Catcher Pond 6 mi · Snowshoe Lake 7 mi · Lost Pond 8 mi · Hay Pond 8 mi · Hay Lake 10 mi · High Pond 10 mi · Long Pond 11 mi · Brown Brook Pond 11 mi · Lower Fowler Pond 11 mi · Middle Fowler Pond 12 mi
See how Millimagassett Lake stacks up: best lake trout lakes in Maine · best brook trout lakes in Maine · best landlocked salmon lakes in Maine
More water nearby: Penobscot County fishing maps (34 charts). Browse all Maine fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. 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.