Dam · Western Cape · South Africa · DWS
Clanwilliam Dam
93.1% full
Total capacity
122.5 Mm³
River
Olifants River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-32.185°S, 18.874°E
Last updated
2026-06-29
Current fill
93.1%vs 7 days ago
+2.4%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
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -32.185, 18.874 · Open in Google Maps
About Clanwilliam Dam
As of June 29, 2026, Clanwilliam Dam is filled to 93.1% of its total capacity, holding roughly 114 Mm³ of water out of a maximum 123 Mm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 2.4 percentage points.
Across the readings we hold for Clanwilliam Dam — 8 data points between May 31, 2026 and June 29, 2026 — the level has ranged from a low of 81.9% (June 3, 2026) to a high of 93.1% (June 29, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 32.185°S, 18.874°E.
Key facts
- Current fill level
- 93.1%
- Water stored
- 114 Mm³
- Total capacity
- 123 Mm³
- 7-day change
- ▲ 2.4 pts
- Primary use
- Water supply
- River
- Olifants River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 32.185°S, 18.874°E
- Last updated
- June 29, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 29 Jun 2026 | 93.1% | 114 |
| 22 Jun 2026 | 90.7% | 111 |
| 16 Jun 2026 | 84.7% | 104 |
| 9 Jun 2026 | 84.7% | 104 |
| 8 Jun 2026 | 81.9% | 100 |
| 7 Jun 2026 | 81.9% | 100 |
| 3 Jun 2026 | 81.9% | 100 |
| 31 May 2026 | 82.4% | 101 |
Frequently asked questions
What is the current water level of Clanwilliam Dam?
As of June 29, 2026, Clanwilliam Dam is at 93.1% of its capacity, holding approximately 114 Mm³ of water, according to DWS South Africa data.
Is Clanwilliam Dam reservoir full?
No. As of June 29, 2026, Clanwilliam Dam is high at 93.1% of its capacity, so it is not full.
Is the water level at Clanwilliam Dam rising or falling?
The level at Clanwilliam Dam is rising — it gained 2.4 percentage points over the latest week on record.
How much water can Clanwilliam Dam hold?
Clanwilliam Dam has a total capacity of 123 Mm³.
Where is Clanwilliam Dam reservoir located?
Clanwilliam Dam is located in Western Cape, South Africa, within the Unknown basin (coordinates 32.185°S, 18.874°E).
What is Clanwilliam Dam used for?
Clanwilliam 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.