page_title: Southern Tier
section_title: Geography
hierarchical_section_title: Southern Tier / Geography
caption_attribution_description: Mist on Mt. Tuscarora in Allegany State Park as seen from Camp Turner in September 2007.
context_page_description: The Southern Tier is a geographic subregion of the broader Upstate New York region of New York State, consisting of counties west of the Catskill Mountains in Delaware County and geographically situated along or very near the northern border of Pennsylvania. Definitions of the region vary widely, but generally encompass localities in counties surrounding the Binghamton and Elmira-Corning metropolitan areas. This region is bordered to the south by the Northern Tier of Pennsylvania and both these regions together are known as the Twin Tiers.
context_section_description: The Southern Tier is generally hilly without being mountainous (with the exception of the Catskill mountains). This can range from low rolling hills to more steep and rugged cliffs and valleys. Both the Delaware and Susquehanna rivers flow through the Southern Tier in their upper reaches, as does the Allegheny River in the western Southern Tier.
  The Southern Tier makes up the northernmost portion of Appalachia and lies on the Allegheny Plateau. It is defined on its western boundary by the Chautauqua Ridge in Chautauqua County, and including this ridge and extending eastward across the northern bounds of the region, the continental divide between the Great Lakes and the Mississippi River watersheds exists. The Eastern Continental Divide runs directly through the region, in Steuben County.
caption: Allegany State Park
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