Western Cape dam levels increased notably during the week of 9 June 2025. Overall water storage across major and minor dams rose to 63.2%, up from 60.3% the previous week.
Western Cape dam levels on Monday, 9 June 2025
Storage in major dams improved across almost all sites:
- Berg River Dam rose from 68.1% to 73.5%, an increase of 5.4 percentage points.
- Theewaterskloof, the province’s largest dam, moved up from 59.1% to 62.1%.
- Wemmershoek gained 5.6 percentage points, increasing to 58.9%.
- Steenbras Lower and Upper Dams saw respective increases of 4.0 and 1.1 percentage points.
- Voëlvlei Dam remained unchanged at 58.2%.
Rainfall Analysis
Rainfall figures over the reporting period contributed significantly to dam recovery. Notable totals include:
- Newlands: 93.5 mm
- Wemmershoek: 82.0 mm
- Wynberg: 70.6 mm
- Steenbras: 67.6 mm
Other areas like Theewaterskloof and Voëlvlei recorded between 30 mm and 40 mm, aiding the modest gains.
A look at changes in major dams
| Dam | Capacity (ML) | Storage % on 9 June 2025 | Storage % Previous Week | % Change |
|---|---|---|---|---|
| Theewaterskloof | 480188 | 62.1 | 59.1 | +3.0 |
| Voëlvlei | 164095 | 58.2 | 58.2 | 0.0 |
| Berg River | 130010 | 73.5 | 68.1 | +5.4 |
| Wemmershoek | 58644 | 58.9 | 53.3 | +5.6 |
| Steenbras Lower | 33622 | 70.4 | 66.4 | +4.0 |
| Steenbras Upper | 31767 | 92.3 | 91.2 | +1.1 |
Cape Town minor dams weekly changes
Among the minor dams:
- Hely-Hutchinson recorded a large rise from 18.3% to 37.4%.
- De Villiers improved to 92.3%, up from 83.7%.
- Alexandra climbed 10.5 percentage points to 34.1%.
- Lewis Gay exceeded full capacity, rising to 100.9%.
- Woodhead Dam showed a slight decrease from 70.5% to 68.5%.
- Victoria Dam remained at 0%.
| Dam | Capacity (ML) | Storage % on 9 June 2025 | Storage % Previous Week | % Change |
|---|---|---|---|---|
| Lewis Gay | 57 | 100.9 | 96.2 | +4.7 |
| Wynberg | 103 | 91.1 | 87.2 | +3.9 |
| Alexandra | 85 | 34.1 | 23.6 | +10.5 |
| Victoria | 27 | 0.0 | 0.0 | 0.0 |
| Woodhead | 927 | 68.5 | 70.5 | -2.0 |
| Hely-Hutchinson | 955 | 37.4 | 18.3 | +19.1 |
| De Villiers | 243 | 92.3 | 83.7 | +8.6 |
With above-average rainfall and widespread increases in storage levels, Western Cape dams are recovering steadily. If similar weather patterns continue, dam levels are expected to rise again in the next weekly update.
