For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
John Heinz National Wildlife Refuge at Tinicum
The John Heinz National Wildlife Refuge at Tinicum contains a portion of the largest freshwater tidal wetland in Pennsylvania, including representative tidal marsh flora and fauna.
Location: Philadelphia County, PA
Year designated: 1965
For additional information see:
Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.
Last Updated: June 28, 2012