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 more gentle slopes than the relatively rugged
Unglaciated Allegheny Plateau. In general, the glaciated lies to the north and west of the unglaciated, and forms an arc in northeastern to southeastern
Ohio lying between the
glacial till plains and the Unglaciated Allegheny Plateau. The Glaciated Allegheny Plateau extends into a belt of southern
New York State and the central
Susquehanna River basin.