Square Lake, Maine
8,090 acres
Surface Area
122 ft
Max Depth
36 ft
Average Depth
20.6 mi
Shoreline
579 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Maine
47.06 degrees N, 68.36 degrees W - Aroostook 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 - Square Lake
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Square Lake Stacks Up
- Its average depth of 36 ft is more than 3 times a typical shallow Maine lake, which averages under 10 ft.
- About 158 miles from Bangor, as the crow flies.
- 21 fish species on the DEP list for this lake.
Fish Species
Landlocked SalmonBrook TroutLake TroutYellow PerchRainbow SmeltBurbot (Cusk)Banded KillifishBlacknose DaceBrown BullheadCommon ShinerCreek ChubFallfishGolden ShinerLake ChubLongnose SuckerNinespine SticklebackNorthern Redbelly DaceRound WhitefishSlimy SculpinThreespine SticklebackWhite Sucker
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Lake ID (MIDAS)1672
CountyAroostook
TownsT15 R6 WELS, T16 R5 WELS
Lake TypeColdwater
Coordinates47.0632, -68.3584
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 1672); USGS. Verified October 30, 2026.