Twin Buttes Reservoir is an

artificial lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from t ...

located about southwest of the city of

San Angelo San Angelo ( ) is a city in and the county seat of Tom Green County, Texas, United States. Its location is in the Concho Valley, a region of West Texas between the Permian Basin (North America), Permian Basin to the northwest, Chihuahuan Desert ...

Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...

, and immediately upstream from

Lake Nasworthy Lake Nasworthy is a small municipal lake located in San Angelo, Texas. The lake is named for John R. Nasworthy, who sold the land where the lake is located to the city. The lake was built by West Texas Utilities Company in 1930 to provide municip ...

. Construction on Twin Buttes Dam to form the

reservoir A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of wa ...

was completed in 1963. The dam is an unusual one – it dams the Middle and South Concho Rivers separately; a stabilization channel runs between the two sides of the lake. Water levels fell significantly during the

2010–13 Southern United States drought 1 (one, unit, unity) is a number, numeral, and glyph. It is the first and smallest positive integer of the infinite sequence of natural numbers. This fundamental property has led to its unique uses in other fields, ranging from science to s ...

and remained low into 2014.

Functions

Twin Buttes Reservoir was established to provide

flood control Flood management or flood control are methods used to reduce or prevent the detrimental effects of flood waters. Flooding can be caused by a mix of both natural processes, such as extreme weather upstream, and human changes to waterbodies and ru ...

irrigation Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has bee ...

water conservation Water conservation aims to sustainably manage the natural resource of fresh water, protect the hydrosphere, and meet current and future human demand. Water conservation makes it possible to avoid water scarcity. It covers all the policies, strateg ...

, and a primary

drinking water Drinking water or potable water is water that is safe for ingestion, either when drunk directly in liquid form or consumed indirectly through food preparation. It is often (but not always) supplied through taps, in which case it is also calle ...

source for San Angelo and the surrounding communities in Tom Green County. The lake also serves as a recreational venue for fishing, boating, and swimming. The dam and reservoir are owned by the

United States Bureau of Reclamation The Bureau of Reclamation, formerly the United States Reclamation Service, is a federal agency under the U.S. Department of the Interior, which oversees water resource management, specifically as it applies to the oversight and operatio ...

, and are managed by the City of San Angelo.

Design

The Twin Buttes Reservoir has two dams, one on the Middle Concho River and the South Concho River. The length of these two rolled earthfill embankments is approximately 42,000 ft with an elevation of just under 2,000 ft above sea level; however, the water level is an average of 1,985 ft above sea level.

Fish populations

Twin Buttes Reservoir has been stocked with species of fish intended to improve the utility of the reservoir for recreational fishing. Fish present in the lake include

largemouth bass The largemouth bass (''Micropterus nigricans'') is a carnivorous, freshwater fish, freshwater, ray-finned fish in the Centrarchidae (sunfish) family, native to the eastern United States, eastern and central United States, southeastern Canada an ...

white bass The white bass, silver bass, or sand bass (''Morone chrysops'') is a freshwater fish of the temperate bass family Moronidae. commonly around 12–15 inches long. The species' main color is silver-white to pale green. Its back is dark, with whit ...

catfish Catfish (or catfishes; order (biology), order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Catfish are common name, named for their prominent barbel (anatomy), barbels, which resemble a cat's whiskers, though not ...

, and

crappie Crappies () are two species of North American freshwater fish of the genus ''Pomoxis'' in the family Centrarchidae (sunfishes). Both species of crappies are popular game fish among recreational anglers. Etymology The genus name ''Pomoxi ...

Vegetation

Three invasive species of vegetation have taken over the land around the reservoir. Along the shoreline is dense saltceder and it grows thick with approximately 3,000 stems per acre. Willow baccharis and Mesquite both grow densely throughout the offshore areas.

References

External links

Twin Buttes Reservoir (blog)
1963 establishments in Texas Protected areas of Tom Green County, Texas Reservoirs in Texas Dams in Texas United States Bureau of Reclamation dams Dams completed in 1963 Bodies of water of Tom Green County, Texas {{TomGreenCountyTX-geo-stub