Land

Maine is divided into four main regions: coastal lowlands, piedmont, mountains, and uplands. The narrow coastal lowlands extend, on average, 10–20 mi (16–32 km) inland from the irregular coastline, but occasionally disappear altogether, as at Mt. Desert Island and on the western shore of Penobscot Bay. The piedmont broadens from about 30 mi (48 km) wide in the southwestern part of the state to about 80 mi (129 km) in the northeast.

The Longfellow range is at the northeastern end of the Appalachian Mountain system and is part of the mountain region of Maine. This zone has nine peaks over 4000ft which includes Mt Katahdin, the highest point of the state at 5,267 ft. The uplands of Maine form a high, relatively flat plateau. Aroostook potato-farming region forms the eastern part of the region while the western part is heavily forested.

Maine has more than 2,200 lakes and ponds. Some of the important lakes are Moosehead Lake, 117 sq mi (303 sq km), and Sebago Lake, 13 mi (21 km) by 10 mi (16 km).Of the more than 5,000 rivers and streams, the Penobscot, Androscoggin, Kennebec, and Saco rivers drain historically and commercially important valleys. The longest river in Maine is the St. John, but it runs for most of its length in the Canadian province of New Brunswick.