The Orange River in South Africa’s Northern Cape is experiencing significant flooding due to substantial releases from the Vaal, Bloemhof, Gariep, and Vanderkloof dams. As of early May 2025, water levels at Upington and surrounding areas are nearing or exceeding peaks last observed during the 2011 floods. The Department of Water and Sanitation reports flows of over 4,800 cubic meters per second in some locations, far above the normal 30 to 50 cumec. These high volumes are a result of dams operating beyond their capacities, forcing increased outflows to manage upstream pressure.
At Grootdrink, the river level has reached 6 meters, with floodwalls built after 2011 now under strain. Some are already collapsing due to erosion, and authorities are monitoring whether levels might exceed their 7.5-meter threshold.
Agricultural Impact: Crops and Infrastructure at Risk
Floodwaters have inundated key farming regions including Upington, Keimoes, Kakamas, and Augrabies. Lucerne fields are already lost, and although the current season’s grape harvest has been completed, waterlogged vines could still affect next year’s production. Gabriel Viljoen of the Orange River Producers Association warns that vineyards submerged for more than two weeks can die, resulting in costly replanting.
Other crops at risk include maize, cotton, and pecan nuts. Pecan orchards in particular are vulnerable to root rot when standing water persists. Farmers also report the loss of irrigated pastures and planted grazing lands. In Douglas, pivot irrigation systems and pumps have been submerged, although some were removed in time. The extent of damage to permanent crops and infrastructure remains uncertain until floodwaters recede.
Infrastructure Damage and Road Closures
Erosion of sandbanks has undermined retaining walls, and infrastructure built after the 2011 floods is failing under current conditions. Farmers are sealing off drainage pipes to prevent backflow from the river. The Department of Public Works in the Northern Cape has reported severe damage to rural roads in the Namakwa and Hantam districts. Several communities, including Kamasies, have been cut off, and emergency bypass routes are being developed.
The Slang Bridge on the R27 route between Groblershoop and Upington has been closed to light vehicles due to safety concerns as the Orange River continues to rise.
Government Response and Safety Advisories
The Department of Water and Sanitation and local authorities have issued alerts and advised communities to steer clear of flood-prone areas. Disaster response teams are on high alert, and farmers have been urged to move livestock, secure equipment, and refrain from water-based activities. Organized agriculture, including Agri Northern Cape and the Orange River Agricultural Union, is engaging with national government to request urgent disaster relief funds.
Minister of Agriculture John Steenhuisen has been actively involved, and there is hope that the crisis facing irrigation farmers in the Northern Cape will be recognised at the highest level.
The flooding of the Orange River presents a serious threat to the region’s agricultural viability. While some damages have been mitigated thanks to early harvests and preparation, long-term risks remain for permanent crops, infrastructure, and the broader economy of the region. As the waters peak and eventually recede, full damage assessments will be needed to plan for recovery, and support from both government and the agricultural community will be essential.
