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Water Infrastructure:

Dams and Infrastructure

   

Dams and associated structures are critical elements of the water management system and supply network in the Orange-Senqu River basin, as they allow for the storage, distribution and the transfer of water to the water scarce parts of the basin. In certain areas they also allow for the generation of hydropower.

 

Table : The major dams of the Orange-Senqu River basin.

Dam Name

WMA/Country

Full Storage Capacity (Mm3)

Surface Area (km2)

Gariep

Upper Orange

5 500

370

Vanderkloof

Upper Orange

3 200

 

Combined: Vaal, Grootdraai, Sterkfontein, Saulspoort and Vaal Barrage

Upper Vaal

5 655

 

Vaal

Upper Vaal

2 536

320

Grootdraai

Upper Vaal

364

 

Bloemhof

Middle Vaal

1 269

223

Katse

Lesotho

1 520

36

Naute

Namibia

84

 

Hardap

Namibia

294

 
Source: ORASECOM 2007d

See the following pages for a discussion of major dams and infrastructure in each basin country:

The information provided below should be used with the Water Infrastructure interactive component provided here and the Dams of the Orange-Senqu River basin Google Earth application provided on the Google Earth page (top menu).

Mohale dam is a rock-fill dam constructed on the Senqunyane River that comprises the major component of Lesotho Highlands Phase 1B.
Source:Lesotho Highland Development Authority 2006
( click to enlarge )

 

Interactive

Explore the sub-basins of the Orange-Senqu River


Explore the water management systems around the basin - including intra-basin transfers and sectoral water requirements


Investigate the dams and water infrastructure in the Orange-Senqu basin


Tour video scenes along the Orange-Senqu River related to Meeting the Water Challenge


Listen to a panel discussion about the history and challenges in the Orange-Senqu basin


Explore how hydroelectric dams work


 
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