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Priority Landscapes

Delaware River and Bay

The Delaware River flowing between Pennsylvania and New Jersey. © Nicholas A. Tonelli

Protecting a Critical Waterway

The Delaware River provides clean drinking water for 17 million people in four states.

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Arrow Island, on the Delaware River in Pennsylvania.
Arrow Island, Delaware River Arrow Island, on the Delaware River in Pennsylvania. © George C Gress

Program Overview

Restoring the Delaware River

Emerging in New York's Catskill Mountains, the Delaware River's east and west branches form to become one of the only free-flowing major rivers remaining in the eastern U.S.

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Bird on a post.

Places We Protect

Delaware Bayshores

The 3,420-square mile Delaware Bayshores spans from Delaware across the bay to the southernmost counties of New Jersey and harbors some of the most important habitats on the U.S. East Coast.

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