Dam · Western Cape · South Africa · DWS
Haarlem Dam
101.4% full
Total capacity
4.7 Mm³
River
Groot River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Last updated
2026-06-09
Current fill
101.4%vs 7 days ago
+1.0%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.
About Haarlem Dam
As of June 9, 2026, Haarlem Dam is filled to 101.4% of its total capacity, holding roughly 5 Mm³ of water out of a maximum 5 Mm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (+1.0 pts).
Across the readings we hold for Haarlem Dam — 5 data points between May 31, 2026 and June 9, 2026 — the level has ranged from a low of 100.4% (June 3, 2026) to a high of 101.5% (May 31, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 0.000°N, 0.000°E.
Key facts
- Current fill level
- 101.4%
- Water stored
- 5 Mm³
- Total capacity
- 5 Mm³
- 7-day change
- ▲ 1.0 pts
- Primary use
- Water supply
- River
- Groot River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 0.000°N, 0.000°E
- Last updated
- June 9, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 9 Jun 2026 | 101.4% | 5 |
| 8 Jun 2026 | 100.4% | 5 |
| 7 Jun 2026 | 100.4% | 5 |
| 3 Jun 2026 | 100.4% | 5 |
| 31 May 2026 | 101.5% | 5 |
Frequently asked questions
What is the current water level of Haarlem Dam?
As of June 9, 2026, Haarlem Dam is at 101.4% of its capacity, holding approximately 5 Mm³ of water, according to DWS South Africa data.
Is Haarlem Dam reservoir full?
Haarlem Dam is essentially full, sitting at 101.4% of capacity as of June 9, 2026.
Is the water level at Haarlem Dam rising or falling?
The level at Haarlem Dam has been broadly stable over the latest week on record (+1.0 points).
How much water can Haarlem Dam hold?
Haarlem Dam has a total capacity of 5 Mm³.
Where is Haarlem Dam reservoir located?
Haarlem Dam is located in Western Cape, South Africa, within the Unknown basin (coordinates 0.000°N, 0.000°E).
What is Haarlem Dam used for?
Haarlem Dam is used primarily for water supply, and is managed by DWS South Africa.