ZRA Conducting Sluice Gate Test At Kariba Dam As Part Of Ongoing Rehabilitation
The Zambezi River Authority (ZRA) is conducting a controlled leakage test on Sluice 3 at Kariba Dam today, marking a significant milestone in the ongoing Kariba Dam Rehabilitation Project (KDRP).
The test is part of a broader initiative aimed at ensuring the dam’s long-term structural integrity and operational efficiency.
The KDRP includes major works on three critical components: the plunge pool, the spillway, and the coffer dam.The plunge pool, located at the base of the dam, is being reshaped to enhance its ability to absorb the energy from high-volume water discharge and prevent erosion around the foundation.
Meanwhile, the spillway, which regulates water outflows during high-inflow periods, is undergoing refurbishment to guarantee safe and efficient operation under varying hydrological conditions.
Also essential to the rehabilitation project is the coffer dam—a temporary barrier installed to allow engineers dry access to parts of the structure normally submerged.
This has made it possible to carry out maintenance and upgrades without disrupting the dam’s critical functions.
According to the ZRA, “This is the same procedure that was previously executed on Sluices 1 and 2,” referencing earlier successful leakage tests on other gates.
Today’s procedure involves the controlled release of approximately 1,500 cubic metres of water through Sluice 3.
The ZRA provided context for the release, stating, “This amount of water could power electricity generation for about 3 seconds—a small and carefully managed release.”
The operation is being monitored in real time by qualified engineers to ensure the refurbished gate is functioning exactly as intended.
As reported by NewsDay, ZRA officials have emphasized that this is a routine and necessary engineering exercise.
The authority assured the public that no danger is posed, urging residents and stakeholders to remain calm during the process. “Please note: This is a planned activity, and members of the public are kindly advised not to be alarmed. Everything is under control, and the test will be closely monitored by experts,” the ZRA stated.
The broader rehabilitation initiative is aimed at extending the functional lifespan of Kariba Dam one of Southern Africa’s most vital sources of hydroelectric power and maintaining its safe operation amid changing environmental and technical demands.
The ZRA reaffirmed its commitment to transparency, public safety, and strict engineering oversight as the project progresses.
