Dam · Gauteng · South Africa · DWS
Rietvlei Dam
99.8% full
Total capacity
12.3 Mm³
River
Hennops River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-25.877°S, 28.265°E
Last updated
2026-06-29
Current fill
99.8%vs 7 days ago
+0.1%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. -25.877, 28.265 · Open in Google Maps
About Rietvlei Dam
As of June 29, 2026, Rietvlei Dam is filled to 99.8% of its total capacity, holding roughly 12 Mm³ of water out of a maximum 12 Mm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.1 pts).
Across the readings we hold for Rietvlei Dam — 8 data points between May 31, 2026 and June 29, 2026 — the level has ranged from a low of 99.7% (June 22, 2026) to a high of 100.5% (May 31, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 25.877°S, 28.265°E.
Key facts
- Current fill level
- 99.8%
- Water stored
- 12 Mm³
- Total capacity
- 12 Mm³
- 7-day change
- ▲ 0.1 pts
- Primary use
- Water supply
- River
- Hennops River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 25.877°S, 28.265°E
- Last updated
- June 29, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 29 Jun 2026 | 99.8% | 12 |
| 22 Jun 2026 | 99.7% | 12 |
| 16 Jun 2026 | 100.2% | 12 |
| 9 Jun 2026 | 100.2% | 12 |
| 8 Jun 2026 | 100.2% | 12 |
| 7 Jun 2026 | 100.2% | 12 |
| 3 Jun 2026 | 100.2% | 12 |
| 31 May 2026 | 100.5% | 12 |
Frequently asked questions
What is the current water level of Rietvlei Dam?
As of June 29, 2026, Rietvlei Dam is at 99.8% of its capacity, holding approximately 12 Mm³ of water, according to DWS South Africa data.
Is Rietvlei Dam reservoir full?
Rietvlei Dam is essentially full, sitting at 99.8% of capacity as of June 29, 2026.
Is the water level at Rietvlei Dam rising or falling?
The level at Rietvlei Dam has been broadly stable over the latest week on record (+0.1 points).
How much water can Rietvlei Dam hold?
Rietvlei Dam has a total capacity of 12 Mm³.
Where is Rietvlei Dam reservoir located?
Rietvlei Dam is located in Gauteng, South Africa, within the Unknown basin (coordinates 25.877°S, 28.265°E).
What is Rietvlei Dam used for?
Rietvlei 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.