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Rating depth structure for lake trout.
Shared by DepthScout anglers. Exact spots stay private, always.
1,302-acre lake near T11 R13 WELS. The lake tops out around 58 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Every species below gets its seasonal read from the same numbers driving the chart.
Traced from the shoreline, Umsaskis Lake runs 1,240 acres with 9.7 miles of edge, with 3 islands in the mix. Index 2 on the shoreline: a few honest points and pockets, nothing labyrinthine. About 45% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The basin spans about 3.1 mi end to end and 1.3 mi across at its widest. You'll find it in Aroostook County. The nearest mapped water is Harvey Pond, 3 mi to the north.
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. The spot to know is Drake Brook inflow, an inflow / creek mouth in about 5 ft of water that rates prime for brook trout in spring. Warm-month bites cluster around early morning and the evening. Throw a small spoon fished deep or a trolled lake-clear wobbler + worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Drake Brook inflow (5 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Drake Brook inflow (5 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Drake Brook inflow (5 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Drake Brook inflow (5 ft) | Small jigging spoon, Tungsten jig + plastic |
Start shallow in spring: lake trout sit in 10 to 40 ft that time of year. Warm water sends them out to 17 to 58 ft; cold water stacks them in 15 to 58 ft. Top water on the chart: Deep basin, a deep basin in the 58 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 | 10 to 40 ft | dawn & dusk | Secondary point (8 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 17 to 58 ft | dawn | Deep basin (58 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Secondary point (8 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 15 to 58 ft | dawn | Deep basin (58 ft) | White tube jig, Airplane jig |
The spring pattern is a shallow one: brown bullhead in 2 to 8 ft. Midsummer fish sit out in 3 to 12 ft before dropping to 10 to 25 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for brown bullhead in spring. Plan around after dark and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Shallow bay flat (3 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (3 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (3 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (58 ft) |
Start shallow in spring: burbot sit in 17 to 58 ft that time of year. They don't go far with the seasons — 17 to 58 ft covers summer, 15 to 58 ft covers winter. Top water on the chart: Deep basin, a deep basin in the 58 ft range, prime in spring. Fish it in after dark and midday and you'll meet the bite. Throw a heavy jig + cut bait until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 17 to 58 ft | night & dusk | Deep basin (58 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 17 to 58 ft | night & midday | Deep basin (58 ft) | Heavy jig + cut bait |
| Fall | 17 to 58 ft | night & dusk | Deep basin (58 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 58 ft | night & dusk | Deep basin (58 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
When the water first warms, lake whitefish slide up into 15 to 45 ft. Summer is a 17 to 58 ft game here, winter a 17 to 58 ft one. Start at Deep basin. It's a deep basin holding about 58 ft of water and rates prime come summer. The feeding windows run early morning. Keep a blade bait vertical or a small jigging spoon rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Break off the point (47 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 17 to 58 ft | dawn | Deep basin (58 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Secondary point (8 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 17 to 58 ft | midday & dawn | Deep basin (58 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Umsaskis Lake carries 9 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 58 ft down.
Access data: Maine GeoLibrary — Boat Launches (Maine IF&W / DACF). Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine IFW — and special regulations can apply to Umsaskis Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Umsaskis Lake is about 58 ft (18 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, brown bullhead, burbot, lake whitefish on Umsaskis Lake.
Drake Brook inflow is the top-rated area: an inflow / creek mouth in about 5 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 Umsaskis 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.
Harvey Pond 3 mi · Little Churchill Pond 6 mi · Round Pond 13 mi · Clear Lake 13 mi · Ross Lake 13 mi · Spider Lake 13 mi · Robbins Brook Pond 13 mi · Little Pleasant Pond 14 mi · Leadbetter Pond 15 mi · Upper Portage Pond 15 mi · Peaked Mountain Pond 15 mi · Lost Pond 16 mi
See how Umsaskis Lake stacks up: best lake trout lakes in Maine · best brook trout lakes in Maine · best lake whitefish lakes in Maine · best burbot lakes in Maine
More water nearby: Aroostook County fishing maps (85 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.