The Allegheny Plateau (/ ˌ æ l ɪ ˈ ɡ eɪ n i / AL-ig-AY-nee) is a large dissected plateau area of the Appalachian Mountains in western and central New York, northern and western Pennsylvania, northern and western West Virginia, and eastern Ohio.

Allegheny Plateau, western section of the Appalachian Mountains, U.S., extending southwestward from the Mohawk River valley in central New York to the Cumberland Plateau in southern West Virginia. Generally sloping toward the northwest, the plateau has been dissected by streams to form the Catskill, Allegheny , and other mountain ranges.

In the west, they slope down into the closely associated Allegheny Plateau, which extends into Ohio and Kentucky. The principal settlements of the Alleghenies are Altoona, State College, and Johnstown, Pennsylvania; and Cumberland, Maryland.

The Allegheny Plateau makes up about half of the Appalachian Mountains and most of West Virginia. Near the Ohio River the maximum elevations of the Allegheny Plateau are about 1,000 feet above sea level, increasing eastward to more than 4,000 feet as …

The Allegheny Plateau is a massive dissected plateau in the eastern part of the United States. It covers sections of southern New York, northwestern New Jersey, northern and western Pennsylvania, eastern Ohio, and western West Virginia.

The Glaciated Allegheny Plateau is that portion of the Allegheny Plateau that lies within the area covered by the last glaciation. As a result, this area of the Allegheny Plateau has lower relief and gentler slopes than the relatively rugged Unglaciated Allegheny Plateau.

Allegheny Mountains, mountainous eastern part of the Allegheny Plateau in the Appalachian Mountains, U.S. The Allegheny range extends south-southwestward for more than 500 miles (800 km) from north-central Pennsylvania to southwestern Virginia.

The Allegheny Plateau is a large dissected plateau area of the Appalachian Mountains in western and central New York, northern and western Pennsylvania, northern and western West Virginia, and eastern Ohio. It is divided into the unglaciated …

Allegheny Plateau, dissected plateau, western part of the Appalachian Mts., extending c.500 mi (800 km) SW from N Pa. to SW Va., rising to c.4,860 ft (1,480 m) at Spruce Knob, the highest peak in West Virginia.

The Allegheny Plateau stretches from central New York state southwest through Pennsylvania, West Virgina, Ohio, and into Kentucky, hugging the western edge of the Appalachian Mountains. However, the Northern Allegheny Plateau is typically the area in north-central and northwestern Pennsylvania, and at this point, will be the area that this page ...