Lakes / Maine / Cupsuptic Lake
Cupsuptic Lake, Maine
16,359 acres
Surface Area
132 ft
Max Depth
60 ft
Average Depth
57.5 mi
Shoreline
1,466 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Maine
44.99 degrees N, 70.83 degrees W - spans Oxford, Franklin Counties. 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 - Cupsuptic Lake
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Cupsuptic Lake Stacks Up
- Ranks #9 for surface area among the Maine lakes counted so far - 16,359 acres.
- The largest lake in Oxford County among those counted.
- Its average depth of 60 ft is more than 6 times a typical shallow Maine lake, which averages under 10 ft.
- About 69 miles from Lewiston, as the crow flies.
Fish Species
Landlocked SalmonBrook TroutYellow PerchLandlocked AlewifeRainbow SmeltBanded KillifishBlacknose DaceBrown BullheadCommon ShinerCreek ChubFallfishFathead MinnowFinescale DaceGolden ShinerLake ChubLongnose SuckerNorthern Redbelly DacePearl DaceSlimy SculpinWhite Sucker
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Lake ID (MIDAS)3302
CountyOxford, Franklin
TownsRangeley, Rangeley Plt, Adamstown Twp, Lower Cupsu
Lake TypeColdwater
Coordinates44.9944, -70.8332
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 3302); USGS. Verified October 30, 2026.