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Ribarroja Dam (Spanish: Presa de Ribarroja, Riba-roja) is a concrete gravity dam located in the province of Tarragona, Spain, that impounds the Ebro. About 35 km upstream of Ribarroja dam is Mequinenza dam. About 15 km downstream is Flix dam.

Ribarroja Dam
Pantà de Riba-roja.jpg
Ribarroja Dam is located in Spain
Ribarroja Dam
Location of Ribarroja Dam in Spain
Official namePresa de Ribarroja
LocationProvince of Tarragona, Spain
Coordinates41°14′37″N 0°25′58″E / 41.243748°N 0.432758°E / 41.243748; 0.432758Coordinates: 41°14′37″N 0°25′58″E / 41.243748°N 0.432758°E / 41.243748; 0.432758
PurposePower
StatusOperational
Opening date1969
Owner(s)Endesa
Operator(s)Endesa
Dam and spillways
Type of damConcrete gravity dam
ImpoundsEbro
Height (foundation)60 m (200 ft)
Length362.4 m (1,189 ft)
Elevation at crest76 m (249 ft)
Dam volume800,000 m3 (28,000,000 cu ft)
Spillway typeOver the dam
Spillway capacity11,670 m3/s (9.46 acre⋅ft/s)
Reservoir
Total capacity210,000,000 m3 (170,000 acre⋅ft)
Surface area21.52 km2 (8.31 sq mi)
Maximum length50 km (31 mi)
Maximum water depth34 m (112 ft)
Normal elevation70 m (230 ft)
Commission date1969
Hydraulic head34 max (20 min)
Turbines4 Kaplan-type
Installed capacity262.8 MW

Empresa Nacional Hidroeléctrica del Ribagorzana S.A. (ENHER) was mandated in 1955[1] by Instituto Nacional de Industria (INI) to build two dams on the Ebro near Mequinenza and Riba-roja. Mequinenza dam was built between 1957 and 1964. Work on Ribarroja dam began during the construction of Mequinenza dam.[2] Ribarroja dam was completed in 1969.[2][3][4] ENHER was acquired by Endesa in 1999.[5]

DamEdit

Ribarroja Dam is a 60 m tall (height above foundation) and 362.4 m long gravity dam with a crest altitude of 76 m. The volume of the dam is 800,000 m³. The dam features a spillway with 7 gates over the dam (maximum discharge 11,670 m³/s) and two bottom outlets with a maximum discharge of 273 (2635) m³/s.[6]

ReservoirEdit

At full reservoir level of 70 (maximum 73, minimum 40) m.a.s.l. the reservoir has a surface area of 21.52 (20.29)[3][7] km², a total capacity of 210 million m³ and a length of almost 50[8] km. The maximum (average) depth of the reservoir is 34 (9.7) m.[4]

Power plantEdit

The power plant contains 4 Kaplan turbine-generators with a total nameplate capacity of 262.8 MW. Maximum (minimum) hydraulic head is 34 (20) m.[7] Maximum flow is 225 m³/s per turbine.[4]

See alsoEdit

ReferencesEdit

  1. ^ "REVISIÓN DEL DIAGNÓSTICO DE LA PRESA DE MEQUINENZA" (PDF) (in Spanish). COMITÉ NACIONAL ESPAÑOL DE GRANDES PRESAS. p. 2. Retrieved 2016-04-23.
  2. ^ a b "HISTORIA" (in Spanish). www.mequinensa.com. Retrieved 2016-04-23.
  3. ^ a b "Embalse: RIBARROJA" (in Spanish). www.embalses.net. Retrieved 2016-05-01.
  4. ^ a b c "DIAGNÓSTICO Y GESTIÓN AMBIENTAL DE EMBALSES EN EL ÁMBITO DE LA CUENCA HIDROGRÁFICA DEL EBRO - EMBALSE DE RIBARROJA" (PDF) (in Spanish). Ministerio del Medio Ambiente - Comisaría de Aguas. pp. 2–4. Retrieved 2016-05-01.
  5. ^ "Endesa absorbe Fecsa y Enher" (in Spanish). El País. 1999-03-18. Retrieved 2016-04-23.
  6. ^ "PRESA: RIBARROJA" (in Spanish). SOCIEDAD ESPAÑOLA DE PRESAS Y EMBALSES (SEPREM). Retrieved 2016-05-01.
  7. ^ a b "28. SISTEMA BAJO EBRO" (in Spanish). Ministerio de Agricultura, Alimentación y Medio Ambiente - Confederación Hidrográfica del Ebro. Retrieved 2016-05-01.
  8. ^ "Embalse de Ribarroja en Fayón" (in Spanish). www.turismodezaragoza.es. Retrieved 2016-05-01.

External linksEdit