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Rating depth structure for brown trout.
Shared by DepthScout anglers. Exact spots stay private, always.
2,071-acre lake near T10 SD BPP Township. The lake tops out around 222 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Below is the species-by-species picture, pulled from the same data the map uses.
On the chart, Tunk Lake draws 2,068 acres inside 15.5 miles of shoreline, with 2 islands in the mix. That shoreline is heavily fingered (development index 2.4) — bays, points and pockets everywhere, which multiplies the fishable edge. Littoral water — the productive band under ~15 ft — makes up 21% of this chart. Figure 3.5 mi of water from one end to the other, 2.1 mi at the beam. The water lies in Hancock County. Closest neighbour on DepthScout: Spring River Lake, 2 mi north of here.
Spring puts brook trout in skinny water — 2 to 15 ft is the zone. Warm water sends them out to 10 to 30 ft; cold water stacks them in 3 to 20 ft. Creek inflow is the standout, an inflow / creek mouth at roughly 4 ft, rated prime for spring brook trout. Plan around early morning and the evening in the warm months. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Creek inflow (4 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Creek inflow (4 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Creek inflow (4 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Creek inflow (4 ft) | Small jigging spoon, Tungsten jig + plastic |
When the water first warms, brown trout slide up into 3 to 25 ft. Summer is a 25 to 60 ft game here, winter a 5 to 35 ft one. Start at Creek inflow. It's an inflow / creek mouth holding about 4 ft of water and rates prime come spring. The feeding windows run after dark and early morning. Keep a spoon at the thermocline or a deep stickbait (night) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Creek inflow (4 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 25 to 60 ft | night & dawn | Break off the point (62 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Creek inflow (4 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Creek inflow (4 ft) | Jigging spoon, Small stickbait (slow) |
Spring pumpkinseed on Tunk Lake hold shallow, usually 1 to 8 ft. By summer they slide out to 2 to 10 ft, and by winter most fish are in 6 to 18 ft. The chart's best answer is Shallow bay flat — weed flat, 4 ft, prime for spring. Prime time lands in the evening and early morning. The summer box starts with a micro tube or a sponge spider (fly).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (4 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (4 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Shallow bay flat (4 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Back-bay flat (6 ft) | Tungsten ice jig + plastic, Tiny spoon |
The chart marks 9 structure features on Tunk Lake; the deepest is Deep basin at about 220 ft.
Access data: Maine GeoLibrary — Boat Launches (Maine IF&W / DACF). Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| May 7 | Brook Trout | 500 | ~9" |
| May 7 | Landlocked Salmon | 400 | ~6" |
Source: Maine IFW stocking report, retrieved 2026-08-18.
Season dates, license requirements, and size and bag limits for Maine waters are set by the Maine IFW — and special regulations can apply to Tunk Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Tunk Lake is about 222 ft (68 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, brown trout, pumpkinseed on Tunk Lake.
Creek inflow is the top-rated area: an inflow / creek mouth in about 4 ft of water that rates prime for brook trout in spring. Scroll up to the map for the complete spot list by 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.
Yes — per Maine IFW stocking report records, Tunk Lake was most recently stocked May 7 with 500 brook trout. The full stocking history is listed above.
Fishing on Tunk 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.
Spring River Lake 2 mi · Donnell Pond 4 mi · Narraguagus Lake 6 mi · Flanders Bay 9 mi · Molasses Pond 9 mi · Eastern Point Harbor 10 mi · Sorrento Harbor 10 mi · Stave Island Harbor 11 mi · Webb Pond 12 mi · Jordan Harbor 13 mi · Frenchman Bay 13 mi · Spectacle Pond 14 mi
See how Tunk Lake stacks up: best brown trout lakes in Maine · best brook trout lakes in Maine · best pumpkinseed lakes in Maine
More water nearby: Hancock County fishing maps (32 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.