Bigelow Preserve is home to the lake in what counties in Maine?
Flagstaff Lake (Maine) Flagstaff Lake is located in Somerset County and Franklin County, Maine in the United States. The North Branch Dead River and South Branch Dead River join in the lake, forming the Dead River.
West Branch Mattawamkeag River The West Branch Mattawamkeag River is a 52.6 mi tributary of the Mattawamkeag River in Maine. From its source ( ) in Maine Township 6, Range 6, WELS, the river runs 10 mi northeast by Pleasant Lake and through Mud Lake and Rockabema Lake, then 42 mi south and southeast through Upper Mattawamkeag Lake and Mattawamkeag Lake to its confluence with the East Branch Mattawamkeag River in Haynesville, about 10 mi west of the Canada–United States border.