Dam · Northern Cape · South Africa · DWS
Douglas Weir Dam
114.8% full
Total capacity
16.3 Mm³
River
Vaal River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-29.044°S, 23.835°E
Last updated
2026-06-29
Current fill
114.8%vs 7 days ago
+0.5%gaining
vs 1 year ago
N/A7-day trend
→stable
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
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -29.044, 23.835 · Open in Google Maps
About Douglas Weir Dam
As of June 29, 2026, Douglas Weir Dam is filled to 114.8% of its total capacity, holding roughly 19 Mm³ of water out of a maximum 16 Mm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (+0.5 pts).
Across the readings we hold for Douglas Weir Dam — 8 data points between May 31, 2026 and June 29, 2026 — the level has ranged from a low of 114.3% (June 22, 2026) to a high of 125.1% (May 31, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 29.044°S, 23.835°E.
Key facts
- Current fill level
- 114.8%
- Water stored
- 19 Mm³
- Total capacity
- 16 Mm³
- 7-day change
- ▲ 0.5 pts
- Primary use
- Water supply
- River
- Vaal River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 29.044°S, 23.835°E
- Last updated
- June 29, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 29 Jun 2026 | 114.8% | 19 |
| 22 Jun 2026 | 114.3% | 19 |
| 16 Jun 2026 | 117.3% | 19 |
| 9 Jun 2026 | 117.3% | 19 |
| 8 Jun 2026 | 115.8% | 19 |
| 7 Jun 2026 | 115.8% | 19 |
| 3 Jun 2026 | 115.8% | 19 |
| 31 May 2026 | 125.1% | 20 |
Frequently asked questions
What is the current water level of Douglas Weir Dam?
As of June 29, 2026, Douglas Weir Dam is at 114.8% of its capacity, holding approximately 19 Mm³ of water, according to DWS South Africa data.
Is Douglas Weir Dam reservoir full?
Douglas Weir Dam is essentially full, sitting at 114.8% of capacity as of June 29, 2026.
Is the water level at Douglas Weir Dam rising or falling?
The level at Douglas Weir Dam has been broadly stable over the latest week on record (+0.5 points).
How much water can Douglas Weir Dam hold?
Douglas Weir Dam has a total capacity of 16 Mm³.
Where is Douglas Weir Dam reservoir located?
Douglas Weir Dam is located in Northern Cape, South Africa, within the Unknown basin (coordinates 29.044°S, 23.835°E).
What is Douglas Weir Dam used for?
Douglas 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.