The Partnership for the Delaware Estuary (PDE) is a regional nonprofit organization working to protect and enhance the Delaware Estuary, where fresh water from the Delaware River mixes with salt water from the Atlantic Ocean. Established in 1996, its mission is to lead science-based and collaborative efforts to improve the tidal Delaware River and Delaware Bay, which spans Delaware, New Jersey, and Pennsylvania.
The Partnership for the Delaware Estuary is one of 28 National Estuary Programs throughout the coastal United States working to improve the environmental health of the nation's estuaries. Its staff works with partners in three states to increase awareness, understanding, and scientific knowledge about the Delaware Estuary, a major regional cultural, economic and recreational resource.
The Delaware Estuary is the tidal portion, of the Delaware River Basin. It includes all of the watersheds draining into this portion of the Delaware River and Delaware Bay. The area surrounding the estuary stretches as far west as the Schuylkill River’s headwaters near Pottsville, Pennsylvania, and as far east as the Rancocas Creek’s headwaters near Fort Dix, New Jersey. The vastness of this watershed makes the Delaware Estuary one of the largest estuaries in the country, or approximately 6800sqmi in size. Within these boundaries are over 200 species of fish, the continent’s second-highest concentration of shorebirds, and over 400000acres of wetlands.
Institutions award grants to the PDE for various programs and projects that improve the estuary, often in partnership with other organizations. For example:
In 2017 the PDE hosted its seventh biennial Delaware Estuary Science & Environmental Summit. This attracted more than 300 scientists, resource managers, and advocates who spent their time "Reflecting on Progress, Charting the Future." This event's purpose is to gather experts from across the region who, otherwise, might never meet, much less collaborate, due to jurisdictional boundaries.