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 ...

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 ...

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

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

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

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

Four experts offer insights about how actions by the second Trump administration might affect the Delaware River watershed.

The awards dinner on Thursday night recognized leadership, innovation and excellence in the science and management of water resources in the Delaware River Basin.