Petty's Island, in the Delaware between Camden and Philadelphia, once bustled with industry. Plans are now to make it an urban preserve.

An effort is underway to name the Paulins Kill, a 41-mile tributary of the Delaware River in New Jersey, as a National Wild and Scenic River.

The Delaware & Raritan Canal, a water supply link from the Delaware River to the Raritan River in New Jersey, faces contamination by toxins.

Can this hidden gem of explosively colorful street art survive burgeoning commercial redevelopment up and down Philadelphia’s waterfront?

Streams in the Delaware River watershed face a variety of threats: stormwater runoff, acid rain, coliform and sedimentation.

Road salt, while good when roads are icy, can be bad for water systems and the critters that inhabit them. The U.S. Environmental Protection Agency has given $319,382 to the University of Delaware to ...

A flotilla of 89 paddlers made up this year’s Delaware River Sojourn, which combined paddling on the river with camping and education.

The New York City Department of Environmental Protection has agreed to stop most added land purchases to protect its Catskills reservoirs.

The deteriorating Skinners Falls Bridge will be dismantled and pieces of it stored for possible future reuse, officials said.

A 1921 mural depicting George Washington crossing the Delaware is being restored to be displayed in time for the nation’s 250th birthday in three years.