Lakes / Maine / Grand Lake Sebois
Grand Lake Sebois, Maine
2,602 acres
Surface Area
33 ft
Max Depth
12 ft
Average Depth
25.2 mi
Shoreline
730 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Maine
46.30 degrees N, 68.65 degrees W - Penobscot County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Maine DEP coordinates, not by eye. Schematic - not a survey map.
Depth Profile - Grand Lake Sebois
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Grand Lake Sebois Stacks Up
- About 104 miles from Bangor, as the crow flies.
- 15 fish species on the DEP list for this lake.
Fish Species
Landlocked SalmonBrook TroutSmallmouth BassChain PickerelYellow PerchAmerican EelBanded KillifishBlacknose DaceCommon ShinerCreek ChubFallfishGolden ShinerLake ChubRedbreast SunfishWhite Sucker
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Lake ID (MIDAS)3011
CountyPenobscot
TownsT7 R7 WELS, T8 R7 WELS
Lake TypeWarmwater
Coordinates46.3007, -68.6512
Deepest Natural Lakes in Maine
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Sebago Lake | Cumberland | 30,536 acres | 316 ft |
| 2 | Moosehead Lake | Piscataquis | 75,473 acres | 246 ft |
| 3 | Tunk Lake | Hancock | 2,071 acres | 222 ft |
| 4 | Pleasant Pond | Somerset | 1,037 acres | 198 ft |
| 5 | Schoodic Lake | Piscataquis | 7,021 acres | 188 ft |
Largest Lakes in Maine
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Moosehead Lake | Piscataquis | 75,473 acres | 246 ft |
| 2 | Sebago Lake | Cumberland | 30,536 acres | 316 ft |
| 3 | Chesuncook Lake | Piscataquis | 28,250 acres | 150 ft |
| 4 | Spednic Lake | Washington | 19,618 acres | 54 ft |
| 5 | South Twin Lake | Penobscot, Piscataquis | 18,652 acres | 101 ft |
Sources: Maine DEP / Lakes of Maine lake data (ID 3011); USGS. Verified October 30, 2026.