| Umbagog Lake | |
|---|---|
 | |
  Umbagog Lake  Umbagog Lake  Umbagog Lake | |
| Location | Coös County, New Hampshire; Oxford County, Maine |
| Coordinates | 44°45′25″N 71°2′57″W / 44.75694°N 71.04917°W |
| Primary inflows | Magalloway River Rapid River Dead Cambridge River |
| Primary outflows | Androscoggin River |
| Basin countries | United States |
| Max. length | 10.4 miles (16.7 km) |
| Max. width | 1.9 miles (3.1 km) |
| Surface area | 7,850 acres (31.8 km2) |
| Average depth | 10 feet (3 m) |
| Max. depth | 45 feet (14 m) |
| Surface elevation | 1,245 feet (379 m) |
| Islands | Big Island; Blake Island; Bear Island; Metallak Island; Blueberry Island; "C" Island; Pine Island; Mosquito Island; Absalom Island; Black Island |
| Settlements | Errol, New Hampshire; Upton, Maine |
Umbagog Lake is a wilderness lake located in Coös County, New Hampshire, and Oxford County, Maine. It is one of the most pristine lakes in the state of New Hampshire. It lies in the towns of Errol, New Hampshire, and Upton, Maine, as well as the townships of Cambridge, New Hampshire, and Magalloway, Maine. The name Umbagog is properly pronounced with the stress on the second syllable (um-BAY-gog) and is said to come from the Abenaki word for "shallow water". Both "Lake Umbagog" and "Umbagog Lake" are commonly used and accepted when referring to the body of water.