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Acadian Plains and Hills

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Map Legend & Subregion List

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NameColor on MapEPA Code‡
Aroostook Lowlands82a
Aroostook Hills82b
Eastern Maine-Southern New Brunswick Plains82c
Central Foothills82d
Central Maine Embayment82e
Downeast Coast82g
Penobscot Lowlands82h

† Status: ✓ = Complete ○ = Needs Image … = Incomplete ∅ = Stub Only

This code refers to the US EPA's Level 4 ecoregion codes for the continental U.S., see here.


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About the Acadian Plains and Hills

The Acadian Plains and Hills is a region covering roughly the eastern-southeastern half of Maine, a large, bordering section in New Brunswick, a tiny sliver in Quebec, and both shores of the Bay of Fundy, including a small portion of Nova Scotia along this bay.

This region is mostly forested, and interspersed with numerous glacial lakes. It is less rugged than the Northeastern Highlands to the west, but still rather rocky. It is colder and less populated than the Northeastern Coastal Zone to the southwest.

Forest cover here is mostly spruce-fir on lowlands and northern hardwoods (sugar maple, American beech, and birch) on hills.

This region is bordered to the southwest along the coast by the warmer, denser-populated Northeastern Coastal Zone. This border is abrupt and marked by a clear geologic transition from a rocky coastline to a flatter coastline with greater fine sediments and abundant coastal marshes. To the northeast, this region borders and partly surrounds the Maritime Lowlands. Inland to the west and north, this region is bordered by the more rugged Northeastern Highlands; a different portion of this same region also borders this region to the southeast in Nova Scotia.

Plant Lists & In-Region Search

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Warning! This region extends outside the continental US. We have only built range maps for the portion of plant ranges in the continental US; these lists and searches may thus have major omissions for species which only occur in the portion of this region outside the continental US.


1. Wiken, E., Griffith, G. "North American Terrestrial Ecoregions - Level III", Commission for Environmental Cooperation, (2011) Web.