Rainbow Lake, Maine
1,626 acres
Surface Area
130 ft
Max Depth
41 ft
Average Depth
16.9 mi
Shoreline
1,048 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Maine
45.83 degrees N, 69.11 degrees W - Piscataquis 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 - Rainbow Lake
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Rainbow Lake Stacks Up
- Its average depth of 41 ft is more than 4 times a typical shallow Maine lake, which averages under 10 ft.
- About 73 miles from Bangor, as the crow flies.
- 5 fish species on the DEP list for this lake.
Fish Species
Brook TroutRainbow SmeltBlacknose DaceBlueback CharrGolden Shiner
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Lake ID (MIDAS)614
CountyPiscataquis
TownsRainbow Twp
Lake TypeColdwater
Coordinates45.8269, -69.1146
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 614); USGS. Verified October 30, 2026.