A swamp is a forested wetland. Swamps are considered to be transition zones because both land and water play a role in creating this environment. Swamps vary in size and are located all around the world. The water of a swamp may be fresh water, brackish water, or seawater. Freshwater swamps form along large rivers or lakes where they are critically dependent upon rainwater and seasonal flooding to maintain natural water level fluctuations. Saltwater swamps are found along tropical and subtropical coastlines. Some swamps have hammocks, or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodic inundation or soil saturation. The two main types of swamp are "true" or swamp forests and "transitional" or shrub swamps. In the boreal regions of Canada, the word swamp is colloquially used for what is more formally termed a bog, fen, or muskeg. Some of the world's largest swamps are found along major rivers such as the Amazon, the Mississippi, and the Congo.
Lake Pontchartrain is an estuary located in southeastern Louisiana in the United States. It covers an area of 630 square miles (1,600 km2) with an average depth of 12 to 14 feet. Some shipping channels are kept deeper through dredging. It is roughly oval in shape, about 40 miles (64 km) from west to east and 24 miles (39 km) from south to north.
The Cache River National Wildlife Refuge is a 68,993 acre (223 km2) (2014) wildlife refuge in the state of Arkansas managed by the United States Fish and Wildlife Service (FWS). The refuge is one of the Ramsar wetlands of international importance under the Ramsar Convention signed in 1971. It is one of the most important wintering area for ducks and the largest remaining tract of contiguous bottomland hardwood forest on the North American continent. In 2005, a possible sighting of the ivory-billed woodpecker, thought to be extinct, brought attention to the refuge.
Overflow National Wildlife Refuge (NWR) is a 13,973 acre national wildlife refuge in Ashley County, Arkansas. Overflow NWR is one of three refuges forming an administrative complex, which also includes Felsenthal NWR and Pond Creek NWR to the west.
Congaree National Park is a 26,692.6-acre American national park in central South Carolina, 18 miles southeast of the state capital, Columbia. The park preserves the largest tract of old growth bottomland hardwood forest left in the United States. The lush trees growing in its floodplain forest are some of the tallest in the eastern United States, forming one of the highest temperate deciduous forest canopies remaining in the world. The Congaree River flows through the park. About 15,000 acres are designated as a wilderness area.
The Apalachicola National Forest is the largest U.S. National Forest in the state of Florida. It encompasses 632,890 acres and is the only national forest located in the Florida Panhandle. The National Forest provides water and land-based outdoors activities such as off-road biking, hiking, swimming, boating, hunting, fishing, horse-back riding, and off-road ATV usage.
The Atchafalaya Basin, or Atchafalaya Swamp, is the largest wetland and swamp in the United States. Located in south central Louisiana, it is a combination of wetlands and river delta area where the Atchafalaya River and the Gulf of Mexico converge. The river stretches from near Simmesport in the north through parts of eight parishes to the Morgan City southern area.
Hammock is a term used in the southeastern United States for stands of trees, usually hardwood, that form an ecological island in a contrasting ecosystem. Hammocks grow on elevated areas, often just a few inches high, surrounded by wetlands that are too wet to support them. The term hammock is also applied to stands of hardwood trees growing on slopes between wetlands and drier uplands supporting a mixed or coniferous forest. Types of hammocks found in the United States include tropical hardwood hammocks, temperate hardwood hammocks, and maritime or coastal hammocks. Hammocks are also often classified as hydric, mesic or xeric. The types are not exclusive, but often grade into each other.
The Theodore Roosevelt National Wildlife Refuge Complex is the largest refuge complex in the state of Mississippi. Over 100,000 acres (400 km2) of refuge lands on seven refuges, including 13,000 acres (53 km2) of refuge-managed Farmers Home Administration lands, provide vital habitat for fish and wildlife in the Delta region.
The southeastern myotis is a small bat found throughout the Gulf Coastal Plain and the Lower Mississippi Alluvial Plain of the southeastern United States.
The Cypress Creek National Wildlife Refuge is located in the Cache River watershed in southernmost Illinois, largely in Pulaski County, but with extensions into Union, Alexander, and Johnson counties. The refuge was established in 1990 under the authority of the Emergency Wetlands Resources Act of 1986. The refuge protects over 16,000 acres (65 km2) of the Cache River wetlands, and has a purchase boundary of 36,000 acres (146 km²) contiguous.
The Boeuf Wildlife Management Area is 51,000-acre (210 km2)s of bottomland hardwoods, cypress-tupelo swamp, and other wetland habitats in northeast Louisiana. It is owned by the Louisiana Department of Wildlife and Fisheries. Boeuf Wildlife Management Area is located in Caldwell and Catahoula Parishes, near the city of Columbia, Louisiana.
Bogue Chitto National Wildlife Refuge is located 60 mi (97 km) northeast of New Orleans, Louisiana, U.S., and encompasses 36,000 acres (150 km2) of Pearl River Basin swampland.
The Atchafalaya National Wildlife Refuge is located about 30 miles (48 km) west of Baton Rouge, Louisiana, and one mile (1.6 km) east of Krotz Springs, Louisiana, lies just east of the Atchafalaya River. In 1988 under the administration of Governor Foster the "Atchafalaya Basin Master Plan" was implemented that combined the 11,780-acre (4,770 ha) Sherburne Wildlife Management Area (WMA), the 15,220-acre (6,160 ha) Atchafalaya National Wildlife Refuge, and the 17,000-acre (6,900 ha) U.S. Army Corps of Engineers' Bayou Des Ourses into the Sherburne Complex Wildlife Management Area.
D'Arbonne National Wildlife Refuge is a National Wildlife Refuge of the United States located north of West Monroe, Louisiana. It is in Ouachita and Union Parishes on either side of Bayou D'Arbonne near its confluence with the Ouachita River. It lies on the western edge of the Mississippi River alluvial valley. It was established in 1975 to protect bottomland hardwoods and provide wintering habitat for migratory waterfowl. D'Arbonne is one of four refuges managed in the North Louisiana Refuges Complex.
Lake Ophelia National Wildlife Refuge was established in 1988 to protect the Mississippi/Red River floodplain ecosystem. The refuge is located in Avoyelles Parish, Louisiana, east central Louisiana. The refuge is named for its most prominent water body, the 350-acre (1.4 km2) Lake Ophelia that was at one time a channel of the nearby Red River of the South.
Roanoke River National Wildlife Refuge was established in 1989 to protect and enhance wooded wetlands consisting of bottomland hardwoods and swamps with high waterfowl value along the Roanoke River. The extensive bottomland hardwood habitat of the Roanoke River National Wildlife Refuge is part of what the Nature Conservancy calls "one of the last great places."
The Little River National Wildlife Refuge is a National Wildlife Refuge of the United States located in Oklahoma. It covers 15,000 acres (61 km2) of forests and wetlands.
The Mississippi lowland forests are a temperate broadleaf and mixed forest ecoregion in the eastern United States, covering an area of 112,300 km2 (43,400 sq mi).
The Mississippi Alluvial Plain is a Level III ecoregion designated by the Environmental Protection Agency (EPA) in seven U.S. states, though predominantly in Arkansas, Louisiana, and Mississippi. It parallels the Mississippi River from the Midwestern United States to the Gulf of Mexico.
