Infiernillo Dam

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Infiernillo Dam
Infiernillo Dam is located in Mexico
Infiernillo Dam
Location of Infiernillo Dam in Mexico
Official name Presa Adolfo López Mateos
Country Mexico
Location La Unión, Guerrero
Coordinates 18°16′23″N 101°53′34″W / 18.27306°N 101.89278°W / 18.27306; -101.89278Coordinates: 18°16′23″N 101°53′34″W / 18.27306°N 101.89278°W / 18.27306; -101.89278
Status In use
Opening date 1965
Owner(s) Comisión Federal de Electricidad
Dam and spillways
Height 149 m (489 ft)
Length 344 m (1,129 ft)
Width (base) 570 m (1,870 ft)
Dam volume 5,500,000 m3 (194,230,667 cu ft)
Creates Infiernillo Reservoir
Total capacity 12,000,000,000 m3 (9,728,558 acre⋅ft)
Power Station
Commission date 1965
Installed capacity 1,120 MW

The Infiernillo Dam ("Little hell"), also known as Adolfo López Mateos Dam, is an embankment dam on the Balsas River near La Unión, Guerrero, Mexico. The dam supports a hydroelectric power station containing six turbine-generators for a total installed capacity of 1,120 MW. The dam is 149 m (489 ft) high, 344 m (1,129 ft) long and is owned by Comisión Federal de Electricidad. Its first generator was operational on January 25, 1965.[1][2]

Placement of the dam embankment began in August 1962, and on December 7, 1963, the dam was topped off. The diversion tunnels were closed and the reservoir began to fill on June 15, 1964.[3]


  1. ^ "Hydroelectric" (in Spanish). CFE. Archived from the original on 26 January 2011. Retrieved 28 January 2011. 
  2. ^ "Monografía: Descripción de la represa hidroeléctrica "EL INFIERNILLO" (PDF) (in Spanish). CONSTRUCCIONES HIDRÁULICA. 2001. Retrieved 28 January 2011. 
  3. ^ Marr, sponsored by The Geo-Institute of the American Society of Civil Engineers ; edited by W. Allen (2002). A history of progress : selected U.S. papers in geotechnical engineering. Reston, Virginia: American Society of Civil Engineers. p. 1524. ISBN 0-7844-0656-1.