The latest water dam level readings for 24 March 2026 show that the City of Cape Town’s water supply system is at 48.8% of total storage capacity, indicating a continued seasonal decline as the region approaches the end of summer.
This figure reflects the combined storage across the six major dams that make up the Western Cape Water Supply System, an interconnected network supplying Cape Town as well as surrounding agricultural and regional areas.
At just under half capacity, dam levels are moderate but below optimal, particularly ahead of the winter rainfall season that typically replenishes supplies. The data shows:
- The largest dam, Theewaterskloof Dam, is at 47.7%, significantly influencing the overall system level due to its size (it holds over 40% of total capacity).
- Smaller dams such as Voëlvlei Dam and Wemmershoek Dam remain above 50%, helping to stabilise the system.
- Others, including Steenbras Lower Dam, are closer to the low-40% range, reflecting widespread declines.
While there is no immediate crisis, the system is currently below ideal pre-winter levels, increasing reliance on strong rainfall over the coming months.
The City of Cape Town has on previous occasion told Radio 786 that water restrictions may return as below average rainfall is a factor. The Municipality would be at pains to issue a water restriction alarm too late as it would require a much more intense and prolonged effort to avoid the dreaded day-zero scenario.
Water usage in Cape Town has increased to 1 billion litres a day, significantly more than the usage target set by the municipality.
The extreme heat weather conditions has also contributed to the excess usage. According to the South African Weather Service (SAWS), several weather stations across the Western Cape and the Namakwa District have recorded their highest March temperatures in more than a decade.
Cape Town’s dam levels typically drop through the hot, dry summer and early autumn period before recovering during winter rains. However, recent reports indicate that current levels are significantly lower than the same time last year, with authorities warning of a possible early-stage drought cycle if rainfall underperforms.
The importance of careful monitoring stems from the city’s recent history. During the 2017–2018 water crisis, dam levels fell below 20%, bringing Cape Town close to “Day Zero,” when municipal water supplies were at risk of being shut off.
With dam levels now below 50%, the coming winter rainfall season will be decisive. Strong inflows could restore comfortable levels, while poor rainfall may increase the likelihood of tighter water restrictions later in the year.
