Watershed

A large water main break flooded a number of streets in downtown Philadelphia early Tuesday.

Since 1987, Greg Crance has run a hot dog stand in the middle of the Delaware River. It's a beautiful office, but a fickle business.

U.S. Nuclear Regulatory Commission stresses precautions, safety measures in place as N.J. plant prepares for Sept. 17 shutdown. Decontamination won't begin until 2075.

The new facility will capture 60 million gallons a year of runoff from 20 commercial properties in Northeast Philadelphia.

Environmental artist Stacey Levy has devoted two years to developing an installation over several sites along the river.

Officials installed a boom along the north side of the creek to prevent the spread of gasoline after receiving reports of a sheen on the water last week.

Some parts of Delaware got nearly half of the annual average rainfall total within three months.

Delaware Riverkeeper Network says Sunoco has violated conditions on drilling and water pollution.

Using big data, research shows water impacts near well sites is rare.

A warming planet means some migrating birds miss mealtime.

“I find there to be an imminent risk to the public and a need for immediate relief and further study to be done," the judge wrote.

Sunoco wants to create a terminal for natural gas liquids.

“It was an empty lot; concrete,” said Irene McKallop. “There wasn’t anything there. It was nothing, it was all cement.”

Sunoco rejected a state senator’s demand that it halt construction of the Mariner East 2 pipeline in Chester County.

Farm to faucet Welcome to the Riverwalk along the Christina River in Wilmington. It’s one of many rivers, cr ...