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 ...

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

Climate trends in the Delaware Estuary and Basin reflect a blend of spiking temperatures, with a growing number of 90-degree-plus days, increasing and intensifying precipitation, and a rapid rise in ...

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 ...

Nearly 150 warehouses – totaling 88 million square feet – are planned or been recently approved in New Jersey’s Delaware River watershed.

An aquatic plant not seen south of the Lehigh since the 1800s is reappearing in what researchers take as a hopeful sign about improved water quality.

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

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

Freshwater streams are still salty after spring rains wash winter salt away, indicating that salt contamination in groundwater is increasing.