Gero Island is a large island on Chesuncook Lake in Piscataquis County, Maine, United States.
It is known for exemplary natural communities of slender rush as well as white pine forest and lower elevation spruce-fir forest.
Chesuncook Lake was created by damming the West Branch Penobscot River in the 19th and early 20th centuries.
The island is part of the Maine Natural Areas Program and is considered publicly owned reserved land, open for camping and recreation year-round.
This Maine state location article is a stub.