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  • 21 Aug, 2019

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Mequinenza Dam
Mequinenza Dam (Spanish: Presa de Mequinenza) is a concrete gravity dam in the province of Zaragoza, Spain. It impounds the Ebro creating a large reservoir, which is called Mar de Aragón. About 35 km downstream of Mequinenza dam is Ribarroja dam.

Empresa Nacional Hidroeléctrica del Ribagorzana S.A. (ENHER) was mandated in 1955 by Instituto Nacional de Industria (INI) to build two dams on the Ebro near Mequinenza and Ribarroja. Work on Mequinenza dam started in 1957. The filling of the reservoir began in December 1965. The power plant was operational in 1964 (1966). ENHER was acquired by Endesa in 1999.

Dam

Mequinenza Dam is a 79 m tall (height above foundation) and 461 m long gravity dam with a crest altitude of 124 m. The volume of the dam is 1,100,000 m. The dam features a spillway with 6 gates over the dam (maximum discharge 11,000 m/s) and one bottom outlet (maximum discharge 160 m/s).

Reservoir

At full reservoir level of 121 m.a.s.l. the reservoir has a surface area of 75.4 km, a total capacity of 1.53 billion m and a length of almost 110 km. The average width of the reservoir is about 600 m, its maximum (average) depth is 62 (20) m.

Power plant

The power plant contains 4 Francis turbine-generators. The initial nameplate capacity was 81 MW each. The turbines, generators and transformers were refurbished from 2007 until 2010 raising the capacity of the new machines to 96 MW each. Maximum flow is 150 m/s per turbine.

See also

Wikimedia Commons has media related to Mequinenza Dam.
  • "La presa de Mequinenza". Wikimapia. Retrieved 2016-04-23.
  • "Embalse de Mequinenza". megaconstrucciones.net. Retrieved 2016-04-23.

References

  1. ^ "HISTORIA" (in Spanish). www.mequinensa.com. Retrieved 2016-04-23.
  2. ^ "Embalse de Mequinenza" (in Spanish). www.turismodezaragoza.es. Retrieved 2016-04-23.
  3. ^ "REVISIÓN DEL DIAGNÓSTICO DE LA PRESA DE MEQUINENZA" (PDF) (in Spanish). COMITÉ NACIONAL ESPAÑOL DE GRANDES PRESAS. p. 2. Retrieved 2016-04-23.
  4. ^ "La hidroeléctrica de Mequinenza ultima el cambio de sus turbinas tras invertir 40 millones" (in Spanish). www.20minutos.es. 2010-06-16. Retrieved 2016-04-23.
  5. ^ "Ministerio del Medio Ambiente - Comisaría de Aguas" (PDF) (in Spanish). DIAGNÓSTICO Y GESTIÓN AMBIENTAL DE EMBALSES EN EL ÁMBITO DE LA CUENCA HIDROGRÁFICA DEL EBRO. pp. 2–4. Retrieved 2016-04-23.
  6. ^ "Endesa absorbe Fecsa y Enher". El País (in Spanish). 1999-03-18. Retrieved 2016-04-23.
  7. ^ "PRESA: MEQUINENZA" (in Spanish). SOCIEDAD ESPAÑOLA DE PRESAS Y EMBALSES (SEPREM). Retrieved 2016-04-23.
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