Clanwilliam Dam

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Clanwilliam Dam
Clanwilliam Dam 2005.jpg
Clanwilliam Dam is located in Western Cape
Clanwilliam Dam
Location in the Western Cape
Official nameClanwilliam Dam
CountrySouth Africa
LocationWestern Cape
Coordinates32°11′5″S 18°52′1″E / 32.18472°S 18.86694°E / -32.18472; 18.86694Coordinates: 32°11′5″S 18°52′1″E / 32.18472°S 18.86694°E / -32.18472; 18.86694
Opening date1935 (wall raised in 1964)
Owner(s)Department of Water Affairs
Dam and spillways
Type of damGravity dam
ImpoundsOlifants River
Height43 m (141 ft)
Length235 m (771 ft)
CreatesClanwilliam Dam Reservoir
Total capacity121,800,000 m3 (4.30×109 cu ft)
Surface area1,124 ha (2,780 acres)

Clanwilliam Dam is a concrete gravity dam on the Olifants River, near Clanwilliam, Western Cape, South Africa. It was established in 1935, and the wall was raised to its current height of 43 metres (141 ft) in 1964.[1] The main purpose of the dam is to provide irrigation water to the agricultural region downstream. It has a capacity of 121,800,000 cubic metres (4.30×109 cu ft).[2]

The feasibility of raising the dam wall by another 15 metres has been investigated.

In 2015 an infrastructure development company has been appointed to do the supervision and contracts management of the project to raise the dam level. As of August 2015 the dam is planned to be raised by 13 meters, increasing its capacity by 70 million cubic metres of water.[3]

See also[edit]


  1. ^ Holtzhausen, Lani (2006). "Dam Project Could Improve Aquatic Environment". The Water Wheel. 5 (1). Water Research Commission. ISSN 0258-2244.
  2. ^ "Clanwilliam Dam". Dams of South Africa. Water Institute of South Africa. Retrieved 7 March 2010.
  3. ^ "Bigen Africa appointed to manage extension of Clanwilliam Dam". Retrieved 2 January 2016.