Dam · Northern Cape · South Africa · DWS
Vaalharts Weir Dam
90.0% full
Total capacity
50.7 Mm³
River
Vaal River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-28.115°S, 24.926°E
Last updated
2026-06-29
Current fill
90.0%vs 7 days ago
+3.4%gaining
vs 1 year ago
N/A7-day trend
↑rising
Weekly storage
Fill history — multi-year
About this dam
Data source
official
Storage data: Department of Water and Sanitation (DWS) Weekly State of Dams report, South Africa.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
About Vaalharts Weir Dam
As of June 29, 2026, Vaalharts Weir Dam is filled to 90.0% of its total capacity, holding roughly 46 Mm³ of water out of a maximum 51 Mm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 3.4 percentage points.
Across the readings we hold for Vaalharts Weir Dam — 8 data points between May 31, 2026 and June 29, 2026 — the level has ranged from a low of 57.4% (May 31, 2026) to a high of 90.0% (June 29, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 28.115°S, 24.926°E.
Key facts
- Current fill level
- 90.0%
- Water stored
- 46 Mm³
- Total capacity
- 51 Mm³
- 7-day change
- ▲ 3.4 pts
- Primary use
- Water supply
- River
- Vaal River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 28.115°S, 24.926°E
- Last updated
- June 29, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 29 Jun 2026 | 90.0% | 46 |
| 22 Jun 2026 | 86.6% | 44 |
| 16 Jun 2026 | 84.8% | 43 |
| 9 Jun 2026 | 84.8% | 43 |
| 8 Jun 2026 | 83.7% | 42 |
| 7 Jun 2026 | 83.7% | 42 |
| 3 Jun 2026 | 83.7% | 42 |
| 31 May 2026 | 57.4% | 29 |
Frequently asked questions
What is the current water level of Vaalharts Weir Dam?
As of June 29, 2026, Vaalharts Weir Dam is at 90.0% of its capacity, holding approximately 46 Mm³ of water, according to DWS South Africa data.
Is Vaalharts Weir Dam reservoir full?
No. As of June 29, 2026, Vaalharts Weir Dam is high at 90.0% of its capacity, so it is not full.
Is the water level at Vaalharts Weir Dam rising or falling?
The level at Vaalharts Weir Dam is rising — it gained 3.4 percentage points over the latest week on record.
How much water can Vaalharts Weir Dam hold?
Vaalharts Weir Dam has a total capacity of 51 Mm³.
Where is Vaalharts Weir Dam reservoir located?
Vaalharts Weir Dam is located in Northern Cape, South Africa, within the Unknown basin (coordinates 28.115°S, 24.926°E).
What is Vaalharts Weir Dam used for?
Vaalharts Weir Dam is used primarily for water supply, and is managed by DWS South Africa.
Nearby reservoirs
See also: South Africa dam levels, explained — how the DWS Weekly State of Dams report becomes the national and provincial figures.