Twin Buttes Reservoir

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Twin Buttes Reservoir
Location Tom Green County, southwest of San Angelo, Texas
Coordinates 31°22′37″N 100°32′01″W / 31.37694°N 100.53361°W / 31.37694; -100.53361
Type Water supply reservoir
Primary inflows Middle Concho River, South Concho River, Spring Creek
Primary outflows Lake Nasworthy
Basin countries United States
Surface area 9,080 acres (3,670 ha)[1]
Max. depth 46 ft (14 m)[1]
Water volume 186,000 acre⋅ft (229,000,000 m3)[2]
Surface elevation 1,940 ft (590 m)[1]
Settlements San Angelo, Texas

Twin Buttes Reservoir is an artificial lake located about 6 mi (9.7 km) southwest of the city of San Angelo, Texas, and immediately upstream from Lake Nasworthy. With the financial support of the Upper Colorado River Authority, construction on Twin Buttes Dam to form the reservoir 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 and remained low into 2014.[3]


Twin Buttes Reservoir was established to provide flood control, irrigation, water conservation, and a primary drinking water 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.[2] The dam and reservoir are owned by the United States Bureau of Reclamation,[2] and are managed by the City of San Angelo.[1]

Fish populations[edit]

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, white bass, catfish, and crappie.[1]


  1. ^ a b c d e Texas Parks and Wildlife (2009). "Twin Buttes Reservoir". Retrieved August 5, 2009.
  2. ^ a b c Handbook of Texas Online (2009). "O.C. Fisher Lake". Retrieved August 5, 2009.
  3. ^ Gaitan, Michelle (24 June 2014). "DAYBREAK BRIEFING: San Angelo's water report". San Angelo Stnadard-Times. Scripps Interactive Newspapers Group. Retrieved 25 June 2014. 

External links[edit]