Elliot Kim
The Mississippi Sound is a body of water off the Mississippi Coast, extending from Lake Borgne, Louisiana, to Mobile Bay, Alabama. It is approximately 129 km (80 miles) long, with a maximum depth of about 6 metres (20 feet). The Sound is separated from the Gulf of Mexico by the Mississippi-Alabama barrier islands, including Cat Island, Ship Island, Horn Island, and Dauphin Island. The Mississippi Sound forms a part of the Intracoastal Waterway and is an important waterway for transportation and commerce in the region.
| Characteristics | Values |
|---|---|
| Length | 129 km (80 mi) or 145 km |
| Width | 7.2 to 22.5 km (4.5 to 14 mi) |
| Average Tidal Range | 0.6 m (1.96 ft) |
| Surface Area | 2,128.87 sq. km |
| Depth | 3 m (10 ft) or 6 m |
| Watershed | 259 km2 (100 mi2) |
| Tidal Marsh | 44 km2 (17 mi2) |
| Estuary | 293 km2 (113 mi2) |
| Major Rivers Draining into Mississippi Sound | Pearl, Pascagoula, Alabama Rivers |
| Mississippi-Alabama Barrier Islands | Cat, Ship, Horn, West Petit Bois, Petit Bois, Dauphin |
| Deepwater Ports | Gulfport, Pascagoula |
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What You'll Learn
The Mississippi Sound is 3m (10 ft) deep on average
The Mississippi Sound is a body of water off the Mississippi Coast, extending from Lake Borgne in Louisiana to Mobile Bay in Alabama. It is approximately 129 km (80 mi) long, 3 m (10 ft) deep on average, and varies in width from 7.2 to 22.5 km (4.5 to 14 mi). The Mississippi Sound is separated from the Gulf of Mexico by the Mississippi-Alabama barrier islands: Cat, Ship, Horn, West Petit Bois, Petit Bois, and Dauphin. These islands form part of the Gulf Islands National Seashore.
The Sound encompasses an estuary 293 km2 (113 mi2) in size, with a watershed of 259 km2 (100 mi2) and 44 km2 (17 mi2) of tidal marsh. The average tidal range is 0.6 m (1.96 ft), and local water depth and surface level fluctuations are largely affected by wind. The climate is semitropical/subtropical, with south-southeast winds at approximately 10.4 kph (6.5 mph).
Major rivers draining into the Mississippi Sound include the Pearl, Pascagoula, and Alabama Rivers, which tend to carry high sediment loads. The Sound also receives freshwater from several minor rivers and bayous. Two ship channels cross the Mississippi Sound: the Gulfport Channel, with a project depth of 9.1 m, and the Pascagoula Channel, with a project depth of 11.6 m.
The Mississippi Sound is an important waterway for commerce and recreation, and it has a significant impact on the local environment and industry. Federal and state authorities have implemented various programs and regulations to address issues such as shellfish restoration and water quality monitoring for beachgoers.
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It reaches depths of 6m in some parts
The Mississippi Sound is a body of water off the Mississippi Coast, extending from Lake Borgne in Louisiana to Mobile Bay in Alabama. It is approximately 129 km (80 miles) long and 3 m (10 ft) deep, although parts of it can reach depths of about 6 m (20 ft). The Sound is separated from the Gulf of Mexico by the Mississippi-Alabama barrier islands: Cat, Ship, Horn, West Petit Bois, Petit Bois, and Dauphin.
The Sound is an estuary with a watershed of 259 km2 (100 mi2) and 44 km2 (17 mi2) of tidal marsh. Its width varies from 7.2 to 22.5 km (4.5 to 14 mi). The average tidal range is 0.6 m (1.96 ft), and local water depth and surface level fluctuations are largely affected by wind. The climate is semitropical/subtropical, with south-southeast winds at approximately 10.4 kph (6.5 mph).
Major rivers draining into the Mississippi Sound include the Pearl, Pascagoula, and Alabama Rivers, which tend to carry high sediment loads. The Sound also receives an influx of freshwater from several minor rivers and bayous. Deepwater ports along the Sound include Gulfport and Pascagoula, which are connected to the Gulf of Mexico by dredged ship channels.
The Mississippi Sound is an important body of water for the region, providing a source of commerce, recreation, and wildlife. It is also a popular destination for sport fishing and boating.
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It is separated from the Gulf of Mexico by islands
The Mississippi Sound is a body of water off the Mississippi Coast, extending from Lake Borgne, Louisiana, to Mobile Bay, Alabama. It is approximately 129 km (80 miles) long and 3 m (10 feet) deep, although some portions reach depths of about 20 feet (6 m). The Sound is separated from the Gulf of Mexico by a series of narrow islands and sandbars, including Cat Island, Ship Island, Horn Island, Petit Bois Island, and Dauphin Island. These islands are part of the Gulf Islands National Seashore, and they separate the Mississippi Sound from the open waters of the Gulf.
The Mississippi Sound runs along the southern coasts of Mississippi and Alabama, from the Mississippi-Louisiana state border to the Dauphin Island Bridge, a distance of about 90 miles (145 km). These islands that separate the Sound from the Gulf are not just geographical features but also have a significant ecological impact on the region. The ancient Mississippi River, when the St. Bernard Lobe of the Mississippi Delta was active thousands of years ago, played a role in the formation of the sediment that makes up these islands today.
The islands act as a natural barrier, influencing the ocean dynamics between the Sound and the Gulf. They contribute to the semi-tropical or subtropical climate in the area, with south-southeast winds blowing at approximately 10.4 kph (6.5 mph). Additionally, the Mississippi Sound experiences an average tidal range of 0.6 m (1.96 ft), and local water depth and surface level fluctuations are largely influenced by wind patterns.
The Mississippi Sound is home to several coastal bays, including St. Louis Bay, Biloxi Bay, Pascagoula Bay, and Grand Bay. These bays are drained by rivers such as the Wolf and Jourdan, as well as the Escatawpa, Pascagoula, Tchoutacabouffa, Biloxi, and Jourdan Rivers, which also provide freshwater to the estuary. The complex interplay between the islands, bays, and rivers creates a unique and dynamic ecosystem within the Mississippi Sound.
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It has two deepwater ports: Gulfport and Pascagoula
The Mississippi Sound is a body of water off the Mississippi Coast, extending from Lake Borgne in Louisiana to Mobile Bay in Alabama. It is approximately 80 miles long and 10 feet deep. The Mississippi Sound has two deepwater ports: Gulfport and Pascagoula.
The Port of Gulfport is a Mississippi State Port Authority port that has been completely restored after being devastated by Hurricane Katrina in 2005. The port is currently focusing on growth and attracting new business. The Mississippi State Port Authority is working with the U.S. Army Corps of Engineers on a feasibility study for channel deepening and widening. Ports America is also investing $43 million in Terminal Four development, which will include a fourth gantry. The Port of Gulfport has also signed a long-term lease agreement with CORE X Partners for a cold storage facility.
The Port of Pascagoula is Mississippi's largest port and is located on the southeastern coast of the state. It is a full-service deepwater port with modern facilities for handling cargo from around the world. The port has two harbors, a combination of public and private terminals, and handles over 32 million tons of cargo annually. The Port of Pascagoula is ranked in the top 25 in the US for foreign cargo and is crucial for trade, industry, and advanced maritime services. The port is equipped with the latest technology and has a highly skilled workforce capable of efficiently handling a wide range of cargoes.
In addition to the two deepwater ports, the Mississippi Sound also has a Gulf Gateway Deepwater Port located 116 miles offshore Louisiana in the Gulf of Mexico. This port was commissioned in 2005 as the world's first offshore LNG receiving facility, allowing LNG to be imported without a land-based terminal. However, it was decommissioned in 2012 due to a shift in the supply-demand balance in the United States.
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It is the primary body of water off the Mississippi Coast
The Mississippi Sound is the primary body of water off the Mississippi Coast. It extends from Lake Borgne in Louisiana to Mobile Bay in Alabama and is bordered by the barrier islands of Cat, Ship, Horn, Petit Bois, and Dauphin. These islands are part of the Gulf Islands National Seashore and separate the sound from the Gulf of Mexico. The Mississippi Sound has a length of approximately 129 km (80 miles), a width ranging from 7.2 to 22.5 km (4.5 to 14 miles), and an average depth of about 3 m (10 ft). However, large portions of the sound reach depths of around 6 m (20 ft).
The sound encompasses a significant estuary, with a surface area of 293 km2 (113 mi2) and a watershed of 259 km2 (100 mi2). It is fed by several major and minor rivers, including the Pearl, Pascagoula, Alabama, Biloxi, Escatawpa, Jourdan, Tchoutacabouffa, and Wolf rivers. These rivers contribute to the high sediment loads in the sound. The average tidal range in the Mississippi Sound is 0.6 m (1.96 ft), and local water depth and surface level fluctuations are influenced by wind conditions.
The Mississippi Sound is an important waterway for navigation and commerce. It includes deepwater ports such as Gulfport and Pascagoula, connected to the Gulf of Mexico by dredged ship channels. The sound is also a vital habitat for seafood harvests, particularly shellfish. However, recent pollution and weather events have impacted shellfish populations, leading to restoration efforts by federal and state authorities.
The sound is an essential feature of the Gulf Coast's geography and ecology. With its length spanning the entire Mississippi Coast and its connection to the Gulf of Mexico, the Mississippi Sound plays a crucial role in the region's marine life and economic activities, including fishing, tourism, and shipping. The sound's semi-tropical/subtropical climate, influenced by the south-southeast winds, further contributes to its ecological significance and attracts visitors seeking a mild and pleasant coastal environment.
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Frequently asked questions
The Mississippi Sound is approximately 3 metres (10 feet) deep, with some parts reaching 6 metres (20 feet).
The Mississippi Sound is a body of water off the Mississippi Coast, extending from Lake Borgne, Louisiana, to Mobile Bay, Alabama. It is approximately 129 kilometres (80 miles) long.
The Mississippi Sound is bordered by the barrier islands of Cat, Ship, Horn, Petit Bois, and Dauphin Islands, which are part of the Gulf Islands National Seashore.
Yes, the Mississippi Sound has two deepwater ports: Gulfport and Pascagoula. These ports are connected to the Gulf of Mexico by dredged ship channels.
