National Estuarine Research Reserves System

The National Estuarine Research Reserves System (NERRS) is a network of protected coastal areas in the United States that preserve estuaries—brackish waters where rivers meet the sea. These reserves are set aside for research, education, and stewardship to understand and sustain these vital ecosystems. They help monitor environmental health, protect wildlife habitats, and provide opportunities for scientific study and public learning. By conserving estuaries, NERRS supports healthy waterways, vibrant ecosystems, and resilient communities along the coast.