Theewaterskloof Dam

As of August 31, 2026, Theewaterskloof Dam is filled to 76.0% of its total capacity, holding roughly 364 Mm³ of water out of a maximum 479 Mm³. At this level the reservoir is within its normal operating range.

Over the most recent week on record the fill level has held broadly steady (-0.8 pts).

Across the readings we hold for Theewaterskloof Dam — 15 data points between May 31, 2026 and August 31, 2026 — the level has ranged from a low of 72.2% (May 31, 2026) to a high of 78.6% (July 27, 2026).

The dam at Theewaterskloof Dam stands 53 m tall and is a earthfill dam and was completed in 1979. It is operated by City of Cape Town / DWS primarily for water supply. It lies within the Breede basin at 34.020°S, 19.280°E.