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REGISTRO ITALIANO DIGHE

Ufficio Periferico di Cagliari

versione italiana


 

Kariba Dam

 

 

Country

Zambia-Zimbabwe

River

Zambezi

Dam type

Double curvature concrete arch

Construction period

1956-1959

Structural height

128 m

Gross storage capacity

185,000 Mm at maximum retention level (487.80 m a.s.l.);

160,360 Mm at normal retention level (484.60 m a.s.l.).

Active storage capacity

64,800 Mm

Volume of the dam

1,032,000 m

Maximum controllable water surface

487.80 m a.s.l.

Maximum water surface

488.50 m a.s.l.

Crest elevation

488.22 m a.s.l.

Top of parapet elevation

489.20 m a.s.l.

Crest length

617 m

Maximum discharge capacity

Six sluices controlled by gates: 1,574 m/s per sluice; total about 9,500 m/s.

Nameplate capacity of the powerplant

Underground powerhouse on the right bank (Zimbabwe): houses six units, each with a power generating capacity of 125 MW (total: 750 MW);

Underground powerhouse on the left bank (Zambia): houses four units, each with a power generating capacity of 150 MW (total: 600 MW).

Total power generating capacity: 1,350 MW.

Notes

Lake Kariba is the second largest man made reservoir in the world.

The impact on the river bed of water discharged from the six sluices spillway, has formed, downstream of the dam, a plunge pool currently about 81 metres deep and 335,000 m large.

 

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Ultimo aggiornamento: 4 agosto 2005