The Department of Water and Sanitation reports that the Integrated Vaal River System (IVRS) remains in a stable and healthy condition, supported by sustained inflows across major catchments following recent rainfall activity.
Overall system storage currently stands at 102.5%, compared to 101.0% recorded last year, and 99.9% recorded last week, reflecting a positive upward trend and continued system recovery.
The total volume of water stored within the system is currently 10,753.16 million cubic metres (m³), compared to 10,493.11 Mm³ recorded during the same period last year, further confirming improved storage conditions across the system.
The Vaal Dam, a key supply source for Gauteng Province, remains above full supply capacity at 104.5%, although slightly lower than the 107.2% recorded during the same period last year. The dam continues to reflect stable inflows and strong operational performance.
The Grootdraai Dam is currently at 101.5%, showing improvement from last week’s 98.8%, while remaining slightly below last year’s 104.1%.
The Sterkfontein Dam remains stable at 99.9%, consistent with the previous week and slightly above last year’s 99.2%, continuing its critical role in system regulation and augmentation.
The Bloemhof Dam has recorded a significant increase to 109.4%, compared to 98.8% last week and 96.1% last year, reflecting strong inflows and favourable hydrological conditions.
Within the Lesotho Highlands Water Project, the Katse Dam is currently at 99.4%, slightly higher than last week’s 98.9%, while the Mohale Dam has increased to 103.1% from 102.3%, both continuing to contribute positively to system augmentation.
Overall, the Integrated Vaal River System remains well-supplied, with all major components reflecting adequate to above-capacity storage levels. Recent rainfall has contributed significantly to maintaining system stability and ensuring continued water availability for domestic, industrial, and agricultural use across Gauteng and surrounding provinces.
Despite these favourable conditions, the Department of Water and Sanitation urges all water users to continue exercising caution and to use water responsibly. High demand levels, particularly in Gauteng, remain a concern, and long-term water security depends on sustained conservation efforts and responsible water use practices.
The Department will continue to closely monitor the system and provide regular updates to the public.
Enquiries:
Acting Deputy Director: Media Liaison
Mr Sanku Tsunke
Cell: 066 299 2915
E-mail: tsunkes@dws.gov.za
Gauteng DWS: Communication
Maria Lebese
Cell: 082 611 9264
E-mail: lebesem@dws.gov.za
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