| Chamberlain Lake | |
|---|---|
  Chamberlain Lake  Chamberlain Lake | |
| Location | Piscataquis County, Maine |
| Coordinates | 46°13′N69°18′W / 46.217°N 69.300°W /46.217; -69.300[1] |
| Primary outflows | Webster Brook |
| Basin countries | United States |
| Max. length | 14 mi (23 km)[2] |
| Max. width | 2 mi (3.2 km)[2] |
| Surface area | 10,932 acres (4,424 ha)[3] |
| Max. depth | 154 feet (47 m) |
| Water volume | 473,380 acre⋅ft (583,910,000 m3)[3] |
| Surface elevation | 942 ft (287 m)[1] |
Chamberlain Lake is one of the largest and deepest lakes in theNorth Maine Woods. The lake originally drained north throughEagle Lake and Churchill Lake into theAllagash River tributary to theSaint John River. Nineteenth-century logging operations diverted the lake into thePenobscot River before designation of theAllagash Wilderness Waterway in 1966.
Telos Lake drained into the south end of Chamberlain Lake until the Telos Cut was excavated in 1841 to allow Telos Lake to drain east into Webster Lake and the Penobscot River.[4] In the 1850s Eben S. Coe built the timber crib Lock Dam across the outlet from Chamberlain Lake causing Chamberlain Lake to overflow southward through Round Pond, Telos Lake, Webster Lake and Webster Brook into theEast Branch Penobscot River inBaxter State Park. These changes allowed logs harvested in the upper Saint John River watershed to be floated toBangor sawmills. The combined level of Chamberlain Lake, Round Pond, and Telos Lake has subsequently been regulated by Telos Dam.[5]
Summer water temperatures range from 64° near the surface to 52° in the deepest pools. Cold water with highdissolved oxygen concentrations provides good habitat fortogue if water levels are stable after autumn spawning occurs in the rocky shallows.Lake whitefish andround whitefish are the main food source for Chamberlain Lake togue. The lake also supportsbrook trout.[6]