Saint Helena Sound is a coastal inlet in Beaufort

Beaufort County, South Carolina

-National protected areas:*Ernest F. Hollings ACE Basin National Wildlife Refuge *Pinckney Island National Wildlife Refuge-Demographics:As of the census of 2000, there were 155,215 people, 45,532 households, and 33,056 families residing in the county. The population density was 206 people per...

 and Colleton counties, South Carolina. The inlet is located East of Beaufort, between Edisto Island. and Hunting Island. Saint Helena Sound is 7.5 mi/12.1 km wide. The Combahee River

Combahee River

The Combahee River is a short blackwater river in the southern Lowcountry region of South Carolina formed at the confluence of the Salkehatchie and Little Salkehatchie rivers near the Islandton community of Colleton County, South Carolina...

 empties from the Northwest and the Edisto River

Edisto River

The Edisto River is the longest completely undammed / unleveed blackwater river in North America, flowing 206 meandering miles from its sources in Saluda and Edgefield counties, to its Atlantic Ocean mouth at Edisto Beach, SC...

 and Ashepoo River from the North. The Coosaw River connects its North end with Broad River

Broad River (South Carolina)

The Broad River is a tidal channel, in Beaufort and Jasper County, South Carolina. The channel flows between mainland on the west and Port Royal and Parris Islands on the east. The Coosawhatchie River flows into the Broad River at the head. It joins Coosaw River channel Northeast and continues...

 channel. The Intracoastal Waterway

Intracoastal Waterway

The Intracoastal Waterway is a 3,000-mile waterway along the Atlantic and Gulf coasts of the United States. Some lengths consist of natural inlets, salt-water rivers, bays, and sounds; others are artificial canals...

 crosses the sound.

See also

• ACE Basin National Wildlife Refuge
  ACE Basin National Wildlife Refuge
  The Ernest F. Hollings ACE Basin National Wildlife Refuge is a portion of the larger ACE Basin area, and the only portions that are federally protected. The wildlife refuge is divided into two units: the Edisto River unit and the Combahee River unit....
  
  
• Waterways forming and crossings of the Atlantic Intracoastal Waterway
  Waterways forming and crossings of the Atlantic Intracoastal Waterway
  This is a list of waterways that form the Atlantic Intracoastal Waterway and crossings across it.-Florida:* Florida Bay* Baker Cut * Buttonwood Sound* Grouper Creek* Tarpon Basin* Dusenberg Creek* Blackwater Sound...