A newly released hydrography data set for the Chesapeake Bay Watershed identified many more streams than the previous dataset. This example shows the new data in blue compared to the older maps in red ...

This video is no longer available. To map the Chesapeake Bay watershed, researchers have long relied on aerial imagery, a time-consuming process to document every water source. But artificial ...

The Chesapeake Bay is the cleanest it’s been in 24 years, thanks to reductions in water pollution from agricultural runoff and wastewater in Pennsylvania, including Northeast Pennsylvania The ...

Biologists once thought such urban areas were mostly off-limits to the semi-aquatic mammals, which are often associated with ...

Approximately 60% of Virginia, including Loudoun County, is located inside the Chesapeake Bay watershed, and those communities now have access to an updated map that shows precisely how their ...

The latest version of the Chesapeake Bay Watershed Agreement, signed in December by representatives of the six states and the District of Columbia that are in the watershed, offers a solid foundation ...