The Mississippi River is the second-longest river and chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it flows generally south for 2,340 miles (3,770 km) to the Mississippi River Delta in the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 32 U.S. states and two Canadian provinces between the Rocky and Appalachian mountains. The main stem is entirely within the United States; the total drainage basin is 1,151,000 sq mi (2,980,000 km2), of which only about one percent is in Canada. The Mississippi ranks as the thirteenth-largest river by discharge in the world. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.
San Francisco Bay is a shallow estuary in the U.S. state of California. It is surrounded by a contiguous region known as the San Francisco Bay Area, and is dominated by the large cities of San Francisco, San Jose, and Oakland.
The United States Army Corps of Engineers (USACE) is an engineer formation of the United States Army that has three primary mission areas: Engineer Regiment, military construction, and civil works. The day-to-day activities of the three mission areas are administered by a lieutenant general known as the commanding general/chief of engineers. The chief of engineers commands the Engineer Regiment, comprising combat engineer, rescue, construction, dive, and other specialty units, and answers directly to the Chief of Staff of the Army. Combat engineers, sometimes called sappers, form an integral part of the Army's combined arms team and are found in all Army service components: Regular Army, National Guard, and Army Reserve. Their duties are to breach obstacles; construct fighting positions, fixed/floating bridges, and obstacles and defensive positions; place and detonate explosives; conduct route clearance operations; emplace and detect landmines; and fight as provisional infantry when required. For the military construction mission, the commanding general is directed and supervised by the Assistant Secretary of the Army for installations, environment, and energy, whom the President appoints and the Senate confirms. Military construction relates to construction on military bases and worldwide installations.
Saint Anthony Falls, or the Falls of Saint Anthony located at the northeastern edge of downtown Minneapolis, Minnesota, is the only natural major waterfall on the Mississippi River. Throughout the mid-to-late 1800’s, various dams were built atop the east and west faces of the falls to support the milling industry that spurred the growth of the city of Minneapolis. In 1880, the central face of the falls was reinforced with a sloping timber apron to stop the upstream erosion of the falls. In the 1950s, the apron was rebuilt with concrete, which makes up the most visible portion of the falls today. A series of locks were constructed in the 1950s and 1960s to extend navigation to points upstream.
Lake Pontchartrain is a brackish 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 Mississippi River–Gulf Outlet Canal is a 76 mi (122 km) channel constructed by the United States Army Corps of Engineers at the direction of Congress in the mid-20th century that provided a shorter route between the Gulf of Mexico and New Orleans' inner harbor Industrial Canal via the Intracoastal Waterway. In 2005, the MRGO channeled Hurricane Katrina's storm surge into the heart of Greater New Orleans, contributing significantly to the subsequent multiple engineering failures experienced by the region's hurricane protection network. In the aftermath the channel was closed. A permanent storm surge barrier was constructed in the MRGO in 2009, and the channel has been closed to maritime shipping.
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.
The Mississippi National River and Recreation Area is a 72-mile (116 km) and 54,000-acre (22,000 ha) protected corridor along the Mississippi River through the Minneapolis–Saint Paul metro in the U.S. state of Minnesota, from the cities of Dayton and Ramsey, to just downstream of Hastings. This stretch of the upper Mississippi River includes natural, historical, recreational, cultural, scenic, scientific, and economic resources of national significance. This area is the only national park site dedicated exclusively to the Mississippi River. The Mississippi National River and Recreation Area is sometimes abbreviated as MNRRA or MISS, the four letter code assigned to the area by the National Park Service. The Mississippi National River and Recreation Area is classified as one of four national rivers in the United States, and despite its name it is technically not one of the 40 national recreation areas.
The Upper Mississippi River is the portion of the Mississippi River upstream of St. Louis, Missouri, United States, at the confluence of its main tributary, the Missouri River.
Ford Dam, officially known as Lock and Dam No. 1, is on the Upper Mississippi River and is located between Minneapolis and Saint Paul, Minnesota just north of the confluence of the Mississippi with the Minnesota River at Mississippi River mile 847.9, in Minneapolis. The powerhouse portion was previously owned by the Ford Motor Company, which operated a hydroelectric power station to feed electricity to its Twin Cities Assembly Plant on the east side of the river. It was sold to Brookfield Power Co. in April 2008. The dual-lock facility and dam was built and is operated by the St. Paul district of the U.S. Army Corps of Engineers' Mississippi Valley Division.
Sardis Lake is a 98,520-acre (398.7 km2) reservoir on the Tallahatchie River in Lafayette, Panola, and Marshall counties, Mississippi. Sardis Lake is impounded by Sardis Dam, located nine miles (14 km) southeast of the town of Sardis. It is approximately an hour drive from Memphis, Tennessee. The dam is 15,300 feet (4,700 m) long, has an average height of 97 feet (30 m), and a maximum height of 117 feet (36 m).
Kingman Lake is a 110-acre (0.45 km2) artificial lake located in the Anacostia River in Washington, D.C., in the United States. The lake was created in 1920 when the United States Army Corps of Engineers used material dredged from the Anacostia River to create Kingman Island. The Corps of Engineers largely blocked the flow of the Anacostia River to the west of Kingman Island, creating the lake. Kingman Lake is currently managed by the National Park Service.
The McClellan–Kerr Arkansas River Navigation System (MKARNS) is part of the United States inland waterway system originating at the Tulsa Port of Catoosa and running southeast through Oklahoma and Arkansas to the Mississippi River. The total length of the system is 445 miles (716 km). It was named for two Senators, Robert S. Kerr (D-OK) and John L. McClellan (D-AR), who pushed its authorizing legislation through Congress. The system officially opened on June 5, 1971. President Richard M. Nixon attended the opening ceremony. It is operated by the Army Corps of Engineers (USACE).
Lake Phalen is an urban lake located in Saint Paul, Minnesota and in its suburb of Maplewood. It is one of the largest lakes in Saint Paul and is the centerpiece of the Phalen Regional Park System. The lake drains into the Mississippi River after traveling through Phalen Creek. The lake and surrounding 494-acre (2.00 km2) park receive around 500,000 visitors each year.
The Water Resources Development Act of 1996 is part of Pub.L. 104–303 (text)(PDF), was enacted by Congress of the United States on October 12, 1996. Most of the provisions of WRDA 1996 are administered by the United States Army Corps of Engineers.
The Water Resources Development Act of 1992, Pub.L. 102–580, was enacted by Congress of the United States on October 31, 1992. Most of the provisions of WRDA 1992 are administered by the United States Army Corps of Engineers.
Raspberry Island is located in the Mississippi River in Saint Paul, Minnesota, United States. Buildings for the Minnesota Boat Club have sat upon the island since 1885; the Minnesota Boat Club Boathouse structure was built in 1910. Between 1949 and 1968, the island was used by the United States Navy. The City of Saint Paul manages the island as part of the Harriet Island Regional Park. Paths, a plaza, and a bandshell were installed on Raspberry Island during renovations by the city in the early 2000s.
Boundary Channel is a channel off the Potomac River in Washington, D.C. The channel begins at the northwestern tip of Columbia Island extends southward between Columbia Island and the Virginia shoreline. It curves around the southern tip of Columbia Island before heading northeast to exit into the Potomac River. At the southwestern tip of Columbia Island, the Boundary Channel widens into the manmade Pentagon Lagoon.
Swan Island is located on the Willamette River about 4.5 miles (7.2 km) downriver from downtown Portland, Oregon, United States. Although presently connected to the Willamette's east bank, it existed as a river island under natural conditions.
