| Moosehead Lake | |
|---|---|
 | |
  Moosehead Lake | |
| Location | Northwest Piscataquis, Maine, United States |
| Coordinates | 45°38′N 69°39′W / 45.633°N 69.650°W |
| Type | mesotrophic |
| Primary inflows | Moose River |
| Primary outflows | Kennebec River |
| Catchment area | 1,268 square miles (3,280 km2) |
| Basin countries | United States |
| Max. length | 40 miles (64 km) |
| Max. width | 10 miles (16 km) |
| Surface area | 75,451 acres (30,534 ha) |
| Average depth | 55 feet (17 m) |
| Max. depth | 246 feet (75 m) |
| Water volume | 4,210,000 acre⋅ft (5.19×109 m3) |
| Residence time | 3.1 years |
| Shore length1 | 280.8 miles (451.9 km) |
| Surface elevation | 1,029 feet (314 m) |
| Islands | >80 (Sugar Island) |
| 1 Shore length is not a well-defined measure. | |
Moosehead Lake is a deep, coldwater lake located in Piscataquis County in Northwestern Maine. It is the largest lake in Maine and the largest lake wholly within New England, the second-largest lake in New England after Lake Champlain, and the largest mountain lake in the eastern United States. Situated in the mostly undeveloped Longfellow Mountains, the lake is the source of the Kennebec River. Several rural Townships border the lake. Greenville is by far the largest town on the lake, with a small downtown area that has banks, shops, and restaurants. There are over 80 islands in the lake, the largest being Sugar Island and Deer Island to the west being the second largest.