Long Lake, Aroostook County, Maine
6,849 acres
Surface Area
163 ft
Max Depth
48 ft
Average Depth
35.7 mi
Shoreline
583 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Maine
47.21 degrees N, 68.24 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 - Long Lake
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Long Lake Stacks Up
- Ranks #10 for depth among the 1246 natural lakes counted in Maine so far.
- Its average depth of 48 ft is more than 4 times a typical shallow Maine lake, which averages under 10 ft.
- About 168 miles from Bangor, as the crow flies.
- 19 fish species on the DEP list for this lake.
Fish Species
Landlocked SalmonBrook TroutLake TroutYellow PerchRainbow SmeltBurbot (Cusk)Blacknose DaceBrown BullheadCommon ShinerCreek ChubFallfishGolden ShinerLake ChubLongnose SuckerNinespine SticklebackNorthern Redbelly DaceSlimy SculpinThreespine SticklebackWhite Sucker
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Lake ID (MIDAS)1682
CountyAroostook
TownsSaint Agatha, T17 R3 WELS, T17 R4 WELS
Lake TypeColdwater
Coordinates47.2081, -68.2390
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 1682); USGS. Verified October 30, 2026.