Pamlico Sound

Pamlico Sound (/ˈpæmlᵻkoʊ/ PAM-lik-oh) in North Carolina in the US is the largest lagoon along the North American East Coast, extending 129 km (80 mi) long and 24 to 48 km (15 to 20 miles) wide. It is part of a large, interconnected network of lagoon estuaries that includes Albemarle Sound, Currituck Sound, Croatan Sound, Pamlico Sound, Bogue Sound, Core Sound, and Roanoke Sound. Together, these sounds, known as the Albemarle-Pamlico sound system, comprise the second largest estuary in the United States, covering over 3,000 sq. mi. of open water.(Chesapeake Bay is the largest.) The Pamlico Sound is separated from the Atlantic Ocean by the Outer Banks, a row of low, sandy barrier islands that include Cape Hatteras National Seashore, Cape Lookout National Seashore, and Pea Island National Wildlife Refuge. The Albemarle-Pamlico Sound is one of nineteen great waters recognized by the America's Great Waters Coalition.

Hydrology

Pamlico Sound is connected to the north with Albemarle Sound through passages provided by the Roanoke Sound and Croatan Sound. Core Sound is located at the Pamlico's narrow southern end. It is fed by the Neuse and Pamlico rivers (the latter of which is the estuary of the Tar River) from the west and by Oregon Inlet, Hatteras Inlet, and Ocracoke Inlet, which also provide passage to the Atlantic Ocean. The salinity of the sound averages 20 ppt, compared to an average coastal salinity of 35 ppt in the Atlantic and 3 ppt in the Currituck Sound, which is located north of the Albemarle Sound.