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Rating depth structure for brook trout.
Shared by DepthScout anglers. Exact spots stay private, always.
6,695-acre lake near Pittston Academy Grant. The lake tops out around 48 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.
Drawn out, this is 6,696 acres of water rimmed by 68.1 miles of bank — 39 islands included. An index of 5.9 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. Littoral water — the productive band under ~15 ft — makes up 60% of this chart. Tip to tip the water measures near 12.2 mi with a 4.2-mi widest point. The water lies in Somerset County. The nearest mapped water is Tomhegan Pond, 8 mi to the south.
The spring pattern is a shallow one: brook trout in 2 to 15 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 3 to 20 ft for winter. The spot to know is Break off the point, a drop-off in about 11 ft of water that rates prime for brook trout in summer. Plan around early morning and the evening in the warm months. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (10 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (11 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (10 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (11 ft) | Small jigging spoon, Tungsten jig + plastic |
The chart marks 14 structure features on Seboomook Lake; the deepest is Deep basin at about 38 ft.
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 Seboomook Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Seboomook Lake is about 48 ft (15 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 on Seboomook Lake.
Break off the point is the top-rated area: a drop-off in about 11 ft of water that rates prime for brook trout in summer. The map above holds the full rated-spot list for every 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 Seboomook 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.
Tomhegan Pond 8 mi · Second St John Pond 9 mi · Third Saint John Pond 9 mi · Foley Pond 9 mi · Lower First St John Pd 9 mi · Center Pond 10 mi · Upper First St John Pond 10 mi · Fourth Saint John Pond 10 mi · Canada Falls Lake 10 mi · Lane Pond 11 mi · Russell Pond 12 mi · Lost Pond 14 mi
See how Seboomook Lake stacks up: best brook trout lakes in Maine
More water nearby: Somerset County fishing maps (76 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.