Partnership for the Delaware Estuary

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, collaborative efforts to improve the tidal Delaware River and Delaware Bay, which span Delaware, New Jersey, and Pennsylvania.

Source: Wikipedia — Partnership for the Delaware Estuary (CC BY-SA 4.0)