Dam · Western Cape · South Africa · DWS
Steenbras-Upper Dam
93.0% full
Total capacity
31.9 Mm³
River
Steenbras River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-34.168°S, 18.902°E
Last updated
2026-08-31
Current fill
93.0%vs 7 days ago
+3.2%gaining
vs 1 year ago
N/A7-day trend
↑rising
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.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -34.168, 18.902 · Open in Google Maps
About Steenbras-Upper Dam
As of August 31, 2026, Steenbras-Upper Dam is filled to 93.0% of its total capacity, holding roughly 30 Mm³ of water out of a maximum 32 Mm³. At this level the reservoir is high.
Over the most recent week on record the fill level has risen by 3.2 percentage points.
Across the readings we hold for Steenbras-Upper Dam — 15 data points between May 31, 2026 and August 31, 2026 — the level has ranged from a low of 79.7% (May 31, 2026) to a high of 100.2% (July 27, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 34.168°S, 18.902°E.
Key facts
- Current fill level
- 93.0%
- Water stored
- 30 Mm³
- Total capacity
- 32 Mm³
- 7-day change
- ▲ 3.2 pts
- Primary use
- Water supply
- River
- Steenbras River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 34.168°S, 18.902°E
- Last updated
- August 31, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 31 Aug 2026 | 93.0% | 30 |
| 24 Aug 2026 | 89.8% | 29 |
| 17 Aug 2026 | 93.0% | 30 |
| 10 Aug 2026 | 96.8% | 31 |
| 3 Aug 2026 | 99.1% | 32 |
| 27 Jul 2026 | 100.2% | 32 |
| 6 Jul 2026 | 98.6% | 32 |
| 29 Jun 2026 | 86.2% | 27 |
| 22 Jun 2026 | 83.4% | 27 |
| 16 Jun 2026 | 82.2% | 26 |
| 9 Jun 2026 | 82.2% | 26 |
| 8 Jun 2026 | 81.2% | 26 |
Nearby reservoirs
See also: South Africa dam levels, explained — how the DWS Weekly State of Dams report becomes the national and provincial figures.