SOUTH AFRICA: New weir supplies 150 farms in Holsloot

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SOUTH AFRICA: New weir supplies 150 farms in Holsloot©NB Studio/Shutterstock

In South Africa, the Western Cape provincial government has just commissioned a weir that diverts water flows from the Holsloot River to 150 agricultural farms for irrigation. Rising water levels in the river, largely due to climate change, are causing severe flooding and degrading biodiversity.

The recently commissioned water facility was built by the Cape Agency for Sustainable Integrated Development in Rural Areas (Casidra), in collaboration with Quebec-based JVC Construction, South Africa-based Ingerop Consulting Engineers, the Western Cape Department of Agriculture (WCDoA) and Stellenbosch University. The Holsloot weir is located near Rawsonville in the Western Cape. It will help to improve the resilience of the population to climate change. The Holsloot weir is the most common form of flooding in the Western Cape, causing intense rainfall that results in high water levels in the Holsloot River and severe flooding.

The new weir diverts water flows from the Holsloot River. This water is now directed into irrigation channels. The Western Cape Minister of Agriculture, Ivan Meyer, who is overseeing the project, has entrusted the operation of the weir to the Holsloot Water Users Association.

Supplying 150 agricultural farms

With the destruction of the Holsloot River water catchment facilities, agricultural production has declined, especially in vineyards. The Holsloot Water Users’ Association will use the overflow of the Holsloot River to supply some 150 agricultural farms, including 4,000 hectares of vines, mainly wine vines. The Holsloot weir cost 78 million South African rand, or about $5.7 million, to build, all of which was funded by the Western Cape government.

Read Also –  AFRICA: Water management, a key issue for biodiversity

In addition to climate change, the biodiversity of the Holsloot River is threatened by invasive plants and waste pollution. Invasive plant clearing campaigns are planned along the Holsloot River. According to the local authorities, these activities will be carried out by farmers and landowners; the aim is to ensure the balance of the ecosystems.

Inès Magoum

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