The Pascagoula River is a river, about 80 miles (130 km) long, in southeastern Mississippi in the United States. The river drains an area of about 8,800 square miles (23,000 km²) and flows into Mississippi Sound of the Gulf of Mexico. The Pascagoula River Basin is managed by the Pat Harrison Waterway District.It is significant as the only unaffected (or nearly so) river with a discharge of over 10 cubic kilometres (2.4 cu mi) per year flowing from the United States into the Gulf of Mexico, and indeed the only one in the Cfa Köppen climate classification zone anywhere in ... Source: Wikipedia