The Mark Twain National Wildlife Refuge Complex was established for the protection of migratory birds including waterfowl, shorebirds, and songbirds. It is located along the Mississippi Flyway, one of the major routes for migrating waterfowl. Refuge units also provide important habitat for big-river fish and a variety of other native wildlife such as deer, fox, beaver, frogs, turtles, and snakes. Key goals are to conserve and enhance the quality and diversity of fish and wildlife and their habitats, to restore floodplain functions in the river corridor, and to provide wildlife-related recreational experiences for the public.
The Mississippi Flyway is a bird migration route that generally follows the Mississippi, Missouri, and Lower Ohio Rivers in the United States across the Great Lakes to the Mackenzie River and Hudson Bay in Canada. The main endpoints of the flyway include central Canada and the region surrounding the Gulf of Mexico. The migration route tends to narrow considerably in the lower Mississippi River valley in the states of Missouri, Arkansas, Mississippi, and Louisiana, which accounts for the high number of bird species found in those areas. Some birds use this flyway to migrate from the Arctic Ocean to Patagonia.
Several units within the Complex were established in the 1940s following construction of the lock and dam system. Those units were consolidated into Mark Twain National Wildlife Refuge in 1958. Since then, other areas have been added to Mark Twain, which now includes 45,000 acres (180 km2) scattered along 345 miles (555 km) of the Mississippi River and short distances up the Illinois and Iowa rivers.
The United States Army Corps of Engineers Mississippi Valley Division (MVD) is responsible for the Corps water resources programs within 370,000-square-miles of the Mississippi River Valley, as well as the watershed portions of the Red River of the North that are within the United States. It excludes the entire watersheds of the Missouri River and Ohio River, and portions of the Arkansas River and the Red River of the South, but otherwise encompasses the entire Mississippi River from Lake Itasca, Minnesota, to the Gulf of Mexico. The district includes all or parts of 13 states: Arkansas, Illinois, Iowa, Kentucky, Louisiana, Michigan, Minnesota, Mississippi, Missouri, North Dakota, Tennessee, Wisconsin, and South Dakota.
In 2000, Mark Twain National Wildlife Refuge was split into five separate National Wildlife Refuges - Port Louisa National Wildlife Refuge, Great River National Wildlife Refuge, Clarence Cannon National Wildlife Refuge, Two Rivers National Wildlife Refuge, and Middle Mississippi River National Wildlife Refuge. The Refuge Complex administration office, located in Quincy, Illinois, has retained the Mark Twain name.
National Wildlife RefugeSystem is a designation for certain protected areas of the United States managed by the United States Fish and Wildlife Service. The National Wildlife Refuge System is the system of public lands and waters set aside to conserve America's fish, wildlife, and plants. Since President Theodore Roosevelt designated Florida's Pelican Island National Wildlife Refuge as the first wildlife refuge in 1903, the system has grown to over 562 national wildlife refuges and 38 wetland management districts encompassing more than 150,000,000 acres (607,028 km2).
Port Louisa National Wildlife Refuge is a 10,780-acre (43.6 km2) National Wildlife Refuge located on the Mississippi River at the border of Illinois and Iowa. The refuge is east of Wapello, in Louisa County, Iowa and Mercer County, Illinois.
The Great River National Wildlife Refuge protects approximately 11,600 acres (47 km2) along 120 miles (190 km) of the Mississippi River, stretching north of St. Louis, Missouri. Three separate units are located in the floodplain, on both the Illinois and Missouri sides of the river.
The United States Fish and Wildlife Service is an agency of the Department of the Interior.
The United States Fish and Wildlife Service is an agency of the US Federal Government within the US Department of the Interior dedicated to the management of fish, wildlife, and natural habitats. The mission of the agency is "working with others to conserve, protect, and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people."
Overflow National Wildlife Refuge is a 12,247 acres (49.6 km2) wildlife refuge in Ashley County, Arkansas managed by the United States Fish and Wildlife Service.
The Bald Knob National Wildlife Refuge is a 15,022 acres (60.79 km2) (2014) wildlife refuge located in White County, Arkansas about two miles south of the town of Bald Knob. The refuge is managed by the United States Fish and Wildlife Service. The refuge features large numbers of migratory waterfowl and bald eagles during the winter months.
Browns Park National Wildlife Refuge is a 13,450-acre (5,440 ha) U.S. National Wildlife Refuge located in northwestern Colorado. It is located in Moffat County in the extreme northwestern corner of the state, in an isolated mountain valley of Browns Park on both sides of the Green River, approximately 25 miles (40 km) below Flaming Gorge Dam. Established in 1965, the refuge is managed by the United States Fish and Wildlife Service office in Maybell, Colorado. The refuge is approximately 53 miles (85 km) northwest of Maybell on State Highway 318. The refuge consists of bottomland and adjacent benchland. The western border of the refuge is the Colorado-Utah state line. The refuge is surrounded by adjacent lines of the Bureau of Land Management. The refuge contains the site of the former Fort Davy Crockett constructed in 1837 to protect trappers against attacks by Blackfoot Native Americans.
Ridgefield National Wildlife Refuge is a wildlife preserve, one of the national wildlife refuges operated by the United States Fish and Wildlife Service, located in the westernmost part of Clark County, Washington. The refuge protects more than 5,200 acres (2,100 ha) of marshes, grasslands, and woodlands.
The refuge was established in 1965, in response to a need to establish vital winter habitat for wintering waterfowl with an emphasis on the dusky Canada goose whose nesting areas in Alaska were severely impacted by the violent earthquake of 1964.
The Yazoo National Wildlife Refuge is a 12,941 acre (52.4 km2) National Wildlife Refuge located in Washington County, Mississippi. Named after the Yazoo tribe, it was established to provide waterfowl and other migratory birds in the Mississippi Flyway with nesting, feeding, brooding, and resting habitat.
Bayou Cocodrie National Wildlife Refuge was established in 1992 to preserve waterfowl habitat and hardwood forest of the lower Mississippi river. The 13,200-acre (53 km2) refuge is located in Concordia Parish, Louisiana, 10 miles (16 km) southwest of Vidalia, Louisiana. It is named for the state-designated scenic river of Bayou Cocodrie.
Catahoula National Wildlife Refuge, located in east central Louisiana, United States, 12 miles (19 km) east of Jena, was established in 1958 as a wintering area for migratory waterfowl. The refuge contains 25,162 acres (101.83 km2) divided into two units. The 6,671-acre (27 km2) Headquarters Unit borders nine miles (14 km) of the northeast shore of Catahoula Lake, a 26,000-acre (110 km2) natural wetland renowned for its large concentrations of migratory waterfowl. The 18,491-acre (74.83 km2) Bushley Bayou Unit, located 8 miles (13 km) west of Jonesville, was established May 16, 2001. This acquisition was made possible through a partnership agreement between The Conservation Fund, American Electric Power, and the Fish and Wildlife Service. The habitat found at the refuge is primarily lowland hardwood forest subject to seasonal backwater flooding from the Ouachita, and Red Rivers.
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.
The San Luis National Wildlife Refuge Complex is located in the northern San Joaquin Valley, within Merced County and Stanislaus County of California. The complex, with four federal National Wildlife Refuges, is managed by the U.S Fish & Wildlife Service.
The Middle Mississippi River National Wildlife Refuge is located on the Mississippi River downstream from St. Louis, Missouri. It is managed by the U.S. Fish and Wildlife Service as part of the Mark Twain National Wildlife Refuge Complex.
The Two Rivers National Wildlife Refuge is located on the Illinois River and the Mississippi River in parts of Calhoun, Jersey, and Greene counties in Illinois, and St. Charles County, Missouri. It is managed by the U.S. Fish and Wildlife Service as part of the Mark Twain National Wildlife Refuge Complex.
Becharof National Wildlife Refuge is a National Wildlife Refuge in the Aleutian Range of the Alaska Peninsula of southwestern Alaska. It is adjacent to Katmai National Park and Preserve. This national wildlife refuge, which covers an area of 1,200,000 acres (4,900 km2), was established in 1980 to conserve major brown bears, salmon, migratory birds, caribou, marine birds, and mammals and to comply with treaty obligations. It lies primarily in the east-central part of Lake and Peninsula Borough, but extends eastward into the mainland portion of Kodiak Island Borough. The refuge is administered from offices in King Salmon.
The Sonny Bono Salton Sea National Wildlife Refuge is located 40 miles (64 km) north of the Mexican border at the southern end of the Salton Sea in California's Imperial Valley. Situated along the Pacific Flyway, the Refuge is the only one of its kind, located 227 feet (69 m) below sea level. Because of its southern latitude, elevation and location in the Colorado Desert, the Refuge experiences some of the highest temperatures in the nation. Daily temperatures from May to October generally exceed 100 °F with temperatures of 116°–120 °F recorded yearly.
Glenn Martin National Wildlife Refuge includes the northern half of Smith Island, which lies 11 miles (18 km) west of Crisfield, Maryland, and Watts Island, which is located between the eastern shore of Virginia and Tangier Island. Both islands are situated in the lower Chesapeake Bay.
Panther Swamp National Wildlife Refuge is one of seven refuges in the Theodore Roosevelt National Wildlife Refuge Complex in Mississippi. Established in 1978, Panther Swamp National Wildlife Refuge encompasses 38,697 acres (156.60 km2). Included in those acres is one of the largest blocks of bottomland forest in the lower Mississippi River alluvial floodplain. The upland areas or ridges often crest at no more than one foot above swamp areas, and contain nuttall, willow and water oaks and other species while overcup oak, bitter pecan and ash dominate the transition zone from swamp to upland. Additional habitat types consist of reforested and agricultural areas.
St. Catherine Creek National Wildlife Refuge was established in January 1990 to preserve, improve and create habitat for waterfowl. Intensive management programs on the refuge provide excellent winter habitat and resting areas for waterfowl in the Lower Mississippi River Valley.
The 3,750-acre (15.2 km2) Clarence Cannon National Wildlife Refuge is located in the floodplain of the Mississippi River, adjacent to Pool No. 25 in Pike County, Missouri. The refuge's diversity of habitats supports waterfowl, wading birds, shorebirds, and songbirds. Although it is protected by a levee, the refuge provides flood storage in periods of high water.
Situated along the Pee Dee River, Pee Dee National Wildlife Refuge contains 8,443 acres (34.17 km2) in Anson and Richmond Counties, North Carolina. The refuge was established to provide wintering habitat for migratory waterfowl.
