National Park Service

Mid-Atlantic Network (MIDN)

Inventory & Monitoring at
Valley Forge National Historical Park

Female monarch at Valley Forge National Historical Park
Female monarch at Valley Forge National Historical Park
NPS LogoValley Forge NHP Home Page
MIDN park map
Location of Valley Forge NHP in the Mid-Atlantic Network . Click for larger image.

Valley Forge National Historical Park is located in Valley Forge, Pennsylvania on the Coastal Plain/Piedmont Uplands 20 km (12 miles) northwest of Philadelphia, PA. Covering a total of 1,403 ha (3,466 acres), the park preserves cultural and natural resources associated with the winter encampment of General George Washington and the Continental Army.

The park contains a variety of important wetland, forest and grassland habitats, and is home to 28 species that are state-listed as endangered, threatened, or rare, including plants, animal, fish, reptile, and crustacean taxa.

The park currently faces numerous threats to its natural and cultural resources. Increased urbanization and population growth can have adverse effects on land cover, air and water quality, and further fragment already limited habitat. Additionally, an overabundance of deer has adversely effected forest regeneration and contributed to an increased spread of invasive exotic species that impact biological diversity and degrade park habitats.

In addition to the natural resource management activities being performed by park staff, scientists of the Mid-Atlantic Network Inventory and Monitoring Program have instituted several monitoring protocols to monitor the status and trends of natural resources at Valley Forge NHP. These monitoring activities include: Air Quality, Breeding Bird, Forest Vegetation, Water Quality and Quantity, and Weather and Climate monitoring. To find documents regarding these programs, use the search box below or browse our document library.

Search Valley Forge National Historical Park Publications

Select a Species Category (optional):

What's the difference?

A Checklist contains only those species that are designated as "present" or "probably present" in the park.

The Full List with Details includes all the Checklist species plus species that are unconfirmed, historically detected, or incorrectly reported in the park. The Full List also contains species that are "in review" because their status in the park hasn't been fully determined. Additional details about the status of each species is included in the Full List.

The Checklist will almost always contain fewer species than the Full List.


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Last Updated: December 30, 2016 Contact Webmaster