Building a conservation blueprint for Pennsylvania


Middle Allegheny Forests

The forested region of northwestern Pennsylvania in the vicinity of Allegheny National Forest is an extensive landscape of private and public lands. These forests are important both as working lands and as the anchor for conservation of the region’s aquatic and terrestrial biodiversity.

This area is within the High Allegheny Plateau ecoregion and includes the Allegheny hardwoods forest type as a signature natural community. Forest blocks in this area share a common major drainage, the Allegheny River.

Please download Java(tm).

Key Features

• The forested landscape includes some old growth forest, including the largest virgin forest in the eastern U.S. between the Adirondacks and the Great Smoky Mountains (4,000 acres at Tionesta Scenic Natural Area and Tionesta Research Natural Area).

• The region’s forest ecosystem includes portions of western New York, adding even more significance.

• Most streams are of high or exceptional water quality.

Conservation Targets

• 17 forest blocks totaling 215,000 acres

• 44 occurrences of globally rare plants, invertebrates and vertebrates, including green- faced clubtail dragonfly and Swainson’s thrush.

• 31 significant occurrences of natural communities (swamps, riparian habitats, etc.)

• 700 miles of stream and river ecosystems representing the aquatic diversity of the upper Ohio Basin


USDA - Forest Service
The Collins Companies
Pennsylvania and New York chapters, The Nature Conservancy


View the next conservation priority area: The North Central Forests and West Branch Susquehanna Basin

Visit the Fallingwater Museum Shop · WPC Membership · Partners · Leadership Circles Heritage Circle · Heritage Circle Gift Choices · Designing a Legacy Gift · Volunteers · Corporate Giving · Contact Us · Home

Copyright © 2006. The Western Pennsylvania Conservancy. All Rights Reserved.