Angostura Reservoir is a 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...

 on the Cheyenne River

Cheyenne River

The Cheyenne River is a tributary of the Missouri River in the U.S. states of Wyoming and South Dakota. It is approximately 295 mi long and drains an area of...

 in Fall River County

Fall River County, South Dakota

As of the census of 2000, there were 7,453 people, 3,127 households, and 1,976 families residing in the county. The population density was 4 people per square mile . There were 3,812 housing units at an average density of 2 per square mile...

, 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...

, USA. It was created after the construction of Angostura Dam

Angostura Dam

The Angostura Dam is an embankment dam and hydroelectric power station on the Grijalva River near Venustiano Carranza in Chiapas, Mexico. The dam's power plant contains 5 x 180 MW, 3 x 310 MW Francis turbine-generators. The tall dam withholds one of the largest reservoirs in Mexico of...

 in 1949 for irrigation. "Angostura" means "narrows" in Spanish.

The reservoir covers an area of 4407 acre (17.8 km²), has a surface elevation of 3127 ft (953.1 m), and a maximum depth of 75 ft (22.9 m).

The reservoir is the location of the Angostura Recreation Area and is a popular location for boating, swimming, and fishing. The lake supports populations of walleye

Walleye

Walleye is a freshwater perciform fish native to most of Canada and to the northern United States. It is a North American close relative of the European pikeperch...

, northern pike

Northern Pike

The northern pike , is a species of carnivorous fish of the genus Esox...

, smallmouth bass

Smallmouth bass

The smallmouth bass is a species of freshwater fish in the sunfish family of the order Perciformes. It is the type species of its genus...

, and sunfish

Centrarchidae

The sunfishes are a family of freshwater ray-finned fish belonging to the order Perciformes. The type genus is Centrarchus . The family's 27 species includes many fishes familiar to North Americans, including the rock bass, largemouth bass, bluegill, pumpkinseed, and crappies...

. As one of the only large bodies of water in the area, Angostura Reservoir is also an important location for migratory birds.