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Rating depth structure for brown trout.
Shared by DepthScout anglers. Exact spots stay private, always.
664-acre lake near T10 SD BPP Township. The lake tops out around 31 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here's the year, species by species, as the scoring engine sees it.
On the chart, Spring River Lake draws 662 acres inside 10.2 miles of shoreline — one island included. That shoreline is heavily fingered (development index 2.8) — bays, points and pockets everywhere, which multiplies the fishable edge. Littoral water — the productive band under ~15 ft — makes up 64% of this chart. Figure 3 mi of water from one end to the other, 1.4 mi at the beam. You'll find it in Hancock County. For a second option, Tunk Lake lies 2 mi south.
Spring brown trout on Spring River Lake hold shallow, usually 3 to 25 ft. By summer they slide out to 9 to 31 ft, and by winter most fish are in 4 to 31 ft. The chart's best answer is Break off the point — drop-off, 20 ft, prime for summer. Prime time lands in after dark and early morning. The summer box starts with a spoon at the thermocline or a deep stickbait (night).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Main-lake point (7 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 9 to 31 ft | night & dawn | Break off the point (20 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Main-lake point (7 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 4 to 31 ft | dawn | Break off the point (20 ft) | Jigging spoon, Small stickbait (slow) |
The spring pattern is a shallow one: brook trout in 2 to 15 ft. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Top water on the chart: Deep basin, a deep basin in the 28 ft range, prime in summer. Time it for early morning and the evening. 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 (7 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Deep basin (28 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (7 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (20 ft) | Small jigging spoon, Tungsten jig + plastic |
Start shallow in spring: landlocked salmon sit in 1 to 15 ft that time of year. Summer pushes them deeper, 9 to 31 ft, and winter fish settle into 8 to 31 ft. The spot to know is Deep basin, a deep basin in about 28 ft of water that rates prime for landlocked salmon in summer. Warm-month bites cluster around early morning and the evening. Throw a dodger + streamer down deep or a thin spoon on lead core until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Main-lake point (7 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 9 to 31 ft | dawn & dusk | Deep basin (28 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Main-lake point (7 ft) | Casting spoon at the mouths, Streamers |
| Winter | 8 to 31 ft | dawn | Deep basin (28 ft) | Small jigging spoon, Swedish pimple + smelt |
Come spring, look for pumpkinseed tight to the bank in 1 to 8 ft. They move out to 2 to 10 ft in summer and finish the year down in 6 to 18 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 2 ft that scores prime in spring. Best bite is the evening and early morning. A micro tube or a sponge spider (fly) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (2 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (2 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Shallow bay flat (2 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Shallow feeding flat (18 ft) | Tungsten ice jig + plastic, Tiny spoon |
The chart marks 7 structure features on Spring River Lake; the deepest is Deep basin at about 28 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 Spring River Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Spring River Lake is about 31 ft (9 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 brown trout, brook trout, landlocked salmon, pumpkinseed on Spring River Lake.
Deep basin is the top-rated area: a deep basin in about 28 ft of water that rates prime for landlocked salmon in summer. Open the map above to see every rated spot for each species and season.
For brown trout, the summer bite is best in after dark 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.
Fishing on Spring River 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.
Tunk Lake 2 mi · Narraguagus Lake 5 mi · Donnell Pond 5 mi · Molasses Pond 9 mi · Flanders Bay 11 mi · Eastern Point Harbor 12 mi · Sorrento Harbor 12 mi · Webb Pond 12 mi · Spectacle Pond 13 mi · Rocky Pond 13 mi · Stave Island Harbor 13 mi · Jordan Harbor 15 mi
See how Spring River Lake stacks up: best brown trout lakes in Maine · best brook trout lakes in Maine · best landlocked salmon 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.