Allagash Lake from the summit of Allagash Mountain
|Location||Piscataquis County, Maine|
|Primary inflows||Allagash Stream|
|Primary outflows||Allagash Stream|
|Basin countries||United States|
|Max. length||4.4 mi (7.1 km)|
|Max. width||1.6 mi (2.6 km)|
|Surface area||4,210 acres (1,700 ha)|
|Max. depth||89 feet (27 m)|
|Water volume||151,374 acre⋅ft (186,717,000 m3)|
|Surface elevation||1,037 ft (316 m)|
Allagash Lake is in the North Maine Woods on the boundary of Maine range 14 townships 7 and 8. Allagash Stream flows into the northwest corner of the lake from Allagash Pond, Crescent Pond, and Mud Pond in township 9 range 15. Allagash Stream overflows the northeast corner of the lake and flows 5 miles (8.0 km) through Little Round Pond into Chamberlain Lake. Chamberlain Lake originally overflowed through Eagle Lake and Churchill Lake to the Allagash River; but was diverted through Telos Cut to the Penobscot River in the 1850s. Allagash Lake provides good habitat for togue and squaretail.
- The Maine Atlas and Gazetteer (Thirteenth ed.). Freeport, Maine: DeLorme Mapping Company. 1988. pp. 55&56. ISBN 0-89933-035-5.
- Maine Depts. of Environmental Protection and Inland Fisheries & Wildlife (2005-08-04). "Maine Lakes: Morphometry and Geographic Information". Senator George J. Mitchell Center for Environmental and Watershed Research, The University of Maine. Archived from the original on 2006-09-03. Retrieved 2008-07-31.
- "Allagash Lake" (PDF). Maine Department of Inland Fisheries and Game. State of Maine. Retrieved 3 May 2016.
- U.S. Geological Survey Geographic Names Information System: Allagash Lake