Assessment of Natural Resources and Watershed Conditions - Delaware Water Gap National Recreation Area and Upper Delaware Scenic and Recreational River (Paperback)

The National Park Service (NPS) was formed on August 25, 1916, and is the U.S. federal agency that manages all national parks, many national monuments, and other conservation and historical properties with various title designations. They publish National Resource Condition Assessment reports that discuss the different conditions in specific regions of the country. This is one of those reports.