Steenbras-Lower Dam

As of October 19, 2026, Steenbras-Lower Dam is filled to 46.4% of its total capacity, holding 15.7 hm³ of water out of a maximum 33.9 hm³. 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 (-0.2 pp), and it is 47.1 points below its level on the same date a year earlier.

Across the readings we hold for Steenbras-Lower Dam — 21 data points between October 19, 2025 and October 19, 2026 — the level has ranged from a low of 46.4% (October 19, 2026) to a high of 93.5% (October 19, 2025). On average the reservoir is fullest around October and at its lowest around September.

The dam at Steenbras-Lower Dam stands 53 m tall and is a gravity dam and was completed in 1921. It is operated by City of Cape Town primarily for water supply. It lies within the Breede-Olifants basin at 34.183°S, 18.867°E.