Lewis and Clark Lake
Encyclopedia
Lewis and Clark Lake is an impoundment on the Missouri River
Missouri River
The Missouri River flows through the central United States, and is a tributary of the Mississippi River. It is the longest river in North America and drains the third largest area, though only the thirteenth largest by discharge. The Missouri's watershed encompasses most of the American Great...

 above Gavins Point Dam
Gavins Point Dam
Gavins Point Dam is a hydroelectric dam on the Missouri River in the U.S. states of Nebraska and South Dakota. Built from 1952 to 1957, it impounds Lewis and Clark Lake. The dam is on the Nebraska-South Dakota border, west of Yankton, South Dakota....

, near Yankton, South Dakota
Yankton, South Dakota
Yankton is a city in, and the county seat of, Yankton County, South Dakota, United States. The population was 14,454 at the 2010 census. Yankton was the original capital of Dakota Territory. It is named for the Yankton tribe of Nakota Native Americans...

. It is located on the border of South Dakota
South Dakota
South Dakota is a state located in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux American Indian tribes. Once a part of Dakota Territory, South Dakota became a state on November 2, 1889. The state has an area of and an estimated population of just over...

 and Nebraska
Nebraska
Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River....

. The reservoir
Reservoir
A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 is approximately 25 miles (40.2 km) long, with a surface area of 31,000 acres (130 km²); it has a maximum depth of 45 feet (13.7 m). It is the smallest of the Pick-Sloan Plan impoundments, and has been plagued with siltation
Siltation
Siltation is the pollution of water by fine particulate terrestrial clastic material, with a particle size dominated by silt or clay. It refers both to the increased concentration of suspended sediments, and to the increased accumulation of fine sediments on bottoms where they are undesirable...

problems. Lewis and Clark Lake (with Gavins Point Dam) is a very popular regional tourist destination, having hosted over one million visitors per year.

External links

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