The Magalloway River is a river in northwestern Maine and northern New Hampshire in the United States. It is a tributary of the Androscoggin River, which flows to the Kennebec River at Merrymeeting Bay in Maine, near the Atlantic Ocean. The total length of the river is 30 miles (48 km), or 48 miles (77 km) if the distances across intervening lakes are included.
The Magalloway River rises near the extreme northwestern corner of Maine, at the juncture of the West Branch and the Second East Branch of the Magalloway. The river flows south through logging country to 2.5-mile (4.0 km)-long Parmachenee Lake, then descends for another 2.6 miles (4.2 km) to the 15-mile (24 km)-long Aziscohos Lake. Below the lake dam, the Magalloway turns west and descends 250 feet (76 m) in 2 miles (3.2 km) to the village of Wilsons Mills, Maine, before once again turning south, now along the New Hampshire-Maine border. The river ends where it joins the outlet of Umbagog Lake, forming the Androscoggin River.
Tributaries of the Magalloway include the West Branch, the Second East Branch, the First East Branch, the Little Magalloway River, and the Dead Diamond River. The Magalloway passes through the townships of Parmachenee, Lynchtown, Parkertown, Lincoln, and Magalloway Plantation in Maine, and the townships of Second College Grant and Wentworth's Location in New Hampshire.
|Location||Oxford County, Maine|
|Max. length||15 mi (24 km) |
|Surface area||6,872 acres (2,781 ha) |
|Max. depth||60 feet (18 m) |
|Water volume||157,945 acre⋅ft (194,822,000 m3) |
|Surface elevation||1,516 ft (462 m) |
Aziscohos Lake extends upstream from Aziscohos Dam in Lincoln Plantation through Parkertown township into Lynchtown township.  The reservoir is good habitat for brook trout and land-locked Atlantic salmon. There is a public boat launch site at the south end of the reservoir off Maine State Route 16. 
- The Maine Atlas and Gazetteer (Thirteenth ed.). Freeport, Maine: DeLorme Mapping Company. 1988. pp. 33, 42&43. 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.
- "Aziscohos Lake" (PDF). Maine Department of Inland Fisheries and Game. State of Maine. Retrieved 3 May 2016.
- U.S. Geological Survey Geographic Names Information System: Seboeis Lake
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