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Mississippi Sound




The Mississippi Sound is a Sound along the Gulf Coast Of The United States . It runs east-west along the southern coasts of Mississippi and Alabama , from Waveland, Mississippi to the Dauphin Island Bridge , a distance of about 145 kilometers (90 mi). The sound is bordered on its southern edge by the barrier islands - Cat , Ship , Horn , Petit Bois and Dauphin Islands - which are part of the National Park Service's Gulf Islands National Seashore . Those islands separate the sound from the Gulf Of Mexico .

Large portions of the Mississippi Sound reach depths of about 6 meters (20 ft). Part of the Gulf Intracoastal Waterway traverses the sound with a project depth of 3.6 meters (12 ft). The waterway, maintained by the US Army Corps Of Engineers , is designed for Towboat and Barge traffic. Most of its route through the sound is merely an imaginary line through water whose depth exceeds the Project Depth . A section west of Cat Island and the portion north of Dauphin Island rely on dredged channels marked by aids to navigation maintained by the US Coast Guard .

Deepwater ports along the sound include Gulfport and Pascagoula . Dredged ship channels running basically north-south connect those ports to the Gulf Of Mexico , running between pairs of the Barrier Islands .


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