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6,800-acre lake near Sebec. The lake tops out around 155 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Here's the year, species by species, as the scoring engine sees it.
Traced from the shoreline, Sebec Lake runs 6,405 acres with 47.4 miles of edge, broken up by 3 islands. The 4.2 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. About 19% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The basin spans about 11.2 mi end to end and 3.3 mi across at its widest. The water lies in Piscataquis County. For a second option, Little Grapevine Pond lies 2 mi northwest.
The spring pattern is a shallow one: lake trout in 10 to 40 ft. As the season builds they drop to 50 to 120 ft, wintering in 20 to 80 ft. Top water on the chart: Main-lake point, a point in the 12 ft range, prime in spring. Time it for early morning. Summer baits: a white tube jig (deep) or a magnum spoon on downrigger gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (12 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Deep basin (143 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Offshore hump (15 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Break off the point (19 ft) | White tube jig, Airplane jig |
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 20 to 45 ft. Rock reef is the standout, a rock pile at roughly 4 ft, rated prime for spring smallmouth bass. Time it for early morning and the evening. You won't need more than a drop shot (goby/minnow) or a ned rig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Rock reef (4 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Offshore hump (15 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (12 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Break off the point (19 ft) | Blade bait, Hair jig |
Start shallow in spring: landlocked salmon sit in 1 to 15 ft that time of year. Warm water sends them out to 25 to 60 ft; cold water stacks them in 10 to 40 ft. Top water on the chart: Creek inflow, an inflow / creek mouth in the 6 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. 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 | Creek inflow (6 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 25 to 60 ft | dawn & dusk | Break off the point (19 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Creek inflow (6 ft) | Casting spoon at the mouths, Streamers |
| Winter | 10 to 40 ft | dawn | Break off the point (19 ft) | Small jigging spoon, Swedish pimple + smelt |
18 pieces of structure are mapped here — Deep basin, around 143 ft, is the deepest of them.
Access data: Maine GeoLibrary — Boat Launches (Maine IF&W / DACF). Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| May 15 | Lake Trout | 2,000 | ~7" |
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 Sebec Lake specifically, so confirm the current rules before you fish.
Check the official Maine fishing regulations →
Sebec Lake is about 155 ft (47 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target lake trout, smallmouth bass, landlocked salmon on Sebec Lake.
Rock reef is the top-rated area: a rock pile in about 4 ft of water that rates prime for smallmouth bass in spring. Scroll up to the map for the complete spot list by species and season.
For lake trout, the summer bite is best in early morning. 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, Sebec Lake was most recently stocked May 15 with 2,000 lake trout. The full stocking history is listed above.
Fishing on Sebec 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.
Little Grapevine Pond 2 mi · Mill Brook Pond 3 mi · Second Buttermilk Pond 4 mi · Burden Pond 5 mi · Little Benson Pond 7 mi · Big Benson Pond 8 mi · Dow Pond 8 mi · Big Houston Pond 10 mi · Lake Onawa 10 mi · Little Houston Pond 11 mi · West Chairback Pond 12 mi · Bear Pond 13 mi
See how Sebec Lake stacks up: best smallmouth bass lakes in Maine · best lake trout lakes in Maine · best landlocked salmon lakes in Maine
More water nearby: Piscataquis County fishing maps (191 charts). Browse all Maine fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.