Chesapeake Bay

Our History

Our regional partnership guides the restoration and protection of the nation’s largest estuary.

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Featured Stories

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A forester tends to a row of young trees with storage facilities in the background.

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Restoring a National Treasure

Our partnership is governed by the Chesapeake Bay Watershed Agreement, which established 10 goals and 31 outcomes that guide the restoration of the Bay, its tributaries and the lands that surround them.

Learn more about the latest agreement

Learn More About the Chesapeake Bay

The Issues

Look into the complex problems facing the Chesapeake Bay.

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Lightning strikes, signaling a coming storm over a young corn field.

The Watershed

Explore the 64,000 square miles that 18 million people call home.

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Satellite image of the entire 64,000-square-mile drainage basin of the Chesapeake Bay.

Bay Trivia

Uncover interesting details about the Bay’s geography, flora, fauna and people.

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The sun sets behind an old dock.

Field Guide to the Chesapeake

Explore the Field Guide to learn about more than 300 species of birds, fish, insects, invertebrates, mammals, plants, reptiles and amphibians that live in the Chesapeake Bay region.

Visit the field guide‍

Purple Finch
Haemorhous purpureus

Critter of the month

Often mistaken for a house finch, the purple finch mostly winters in the Chesapeake Bay watershed and breeds up north.

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A purple finch perched on a branch of dried sorghum.