Haarlem Dam Level Today
On the Groot River, Western Cape. Full supply capacity 5 million m3. Current as of 2026-06-01.
This dam is over 100% of its full supply capacity - the level officially counted as "100% full". The extra water is held in flood-reserve storage above the normal full level, so water is usually spilling over the spillway or being released through the sluice gates to protect the dam wall, and rivers downstream can run high. It is the opposite of a shortage: the dam is full and overflowing.
Recent trend: Over the last 5 weeks, Haarlem Dam has risen 87.2 percentage points - about 17.44% per week.
Haarlem Dam Level History
Showing 7 weekly readings from 2025-10-13 to 2026-06-01.
About Haarlem Dam
Haarlem is a small irrigation dam in the Langkloof area of the Eastern Cape.
Haarlem Dam has a full supply capacity of 4.6 million cubic metres (Mm3) and sits on the Groot River in Western Cape. At 100.4% full, the dam currently holds roughly 4.6 Mm3 of water, equivalent to about 4618 million litres.
Which Towns and Cities Does Haarlem Dam Supply?
Haarlem Dam supplies water to Uniondale area.
Key supply areas: Uniondale area.
Haarlem Dam - Frequently Asked Questions
Is Haarlem Dam running dry?
No, Haarlem Dam is not running dry. At 100.4% full, the dam has adequate water reserves.
When was Haarlem Dam last full?
Based on available weekly data, Haarlem Dam most recently reached 99%+ full around 2026-06-01.
What cities does Haarlem Dam supply?
Haarlem Dam supplies water to Uniondale area. Haarlem is a small irrigation dam in the Langkloof area of the Eastern Cape.
What river is Haarlem Dam on?
Haarlem Dam is on the Groot River in Western Cape.
How is the Haarlem Dam level trending?
Haarlem Dam is currently at 100.4% full. The level is falling, down 1.1% from last week. Compared to this time last year (70.4%), the dam is in a significantly better position.
Other Dams in Western Cape
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