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completed in 1973. Its purpose was to supply water to the city of
Bloemfontein via the 115-km-long Caledon-Bloemfontein pipeline, which has a capacity of around 1.157 m/s. Due to the high sediment concentration in the water, the transfer from Welbedacht Dam is first purified at the Welbedacht Purification Plant, which is located just downstream of the dam. The purification plant has a capacity of 1.68 m/s. The hazard potential of the dam has been ranked high.
321:, but the outlet works for the transfer scheme still exist at the dam wall. For various reasons, however, constructing a smaller scheme on the Caledon River was implemented before the completion of the Vanderkloof Dam. The Welbedacht Dam on the Caledon River was constructed as the main storage element of the CMRGWS and water is abstracted from this dam for transfer to Bloemfontein and various smaller users along the way.
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Due to siltation, the storage capacity of the
Welbedacht Dam reduced rapidly from the original 115 million m to roughly 16 million m during the 20 years since completion. This reduction in storage created problems in meeting the Bloemfontein demand at an acceptable level of
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The
Welbedacht Dam is a concrete barrage-type dam on the Caledon River, which was designed and constructed by the Department of Water Affairs. The dam has a catchment area of some 15 245 km with a natural mean annual runoff (MAR) of around 1210 million m/a (1920 to 1987) and was
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catchment, which has insufficient water resources to meet the growing water requirements. The water supply to
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is the sixth-largest city in South Africa, with a population of around 300 000. It is situated in the
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343:List of reservoirs and dams in South Africa
329:reliability and as a result, the 50-m-high
313:Bloemfontein originally planned to receive
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298:, and was established in 1973.
120:Dam in Free State, South Africa
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290:is a concrete-gravity type
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355:List of South African Dams
255:Welbedacht Dam Reservoir
333:was completed in 1988.
379:Dams completed in 1973
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174:29.85985°S 26.89062°E
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269:Catchment area
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165:26°53′26″E
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357:from the
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239:Length
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193:1973
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