Haarlem Dam Level Today

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 13.2% full, the dam currently holds roughly 0.6 Mm3 of water, equivalent to about 607 million litres.

This is critically low. Severe water restrictions are likely in place or imminent for areas supplied by this dam.

Restriction thresholds to watch: most municipalities begin issuing warning notices when a supply dam drops below 50%, introduce Level 1 restrictions around 40%, and escalate further below 30%. Exact thresholds vary by water authority.

Haarlem Dam supplies water to Uniondale area.

Key supply areas: Uniondale area.

Is Haarlem Dam running dry?

Haarlem Dam is critically low at 13.2% full. This is below the threshold where severe water restrictions are typically imposed. Water supply authorities are likely managing demand actively.

When was Haarlem Dam last full?

Based on available data from 2025-10-13 to 2026-04-20, Haarlem Dam has not reached 99%+ full within this period. The highest recorded level was 61.6%.

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 13.2% full. The level is falling, down 1.0% from last week. Compared to this time last year (69.4%), the dam is noticeably lower.