Delaware Water Gap National Recreation Area
The National Park Service's web site for the park is Delaware Water Gap National Recreation Area and Middle Delaware National Scenic River.
Flora and fauna
Interstate 80, which goes from Metro New York all the way to San Francisco goes right through the "gap" in the river. Interstate 84 skirts the northern edge of the park near Milford, PA. In addition, US Route 209 travels the length of the park, and is the main route within it.
Hiking, Fishing, Camping, Canoeing, Rafting, "Tubing"
More private camping areas are around, too.