Dam · Eastern Cape · South Africa · DWS
Xonxa Dam
100.9% full
Total capacity
116.4 Mm³
River
White Kei River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-31.838°S, 27.182°E
Last updated
2026-10-05
Current fill
100.9%vs 7 days ago
-2.6%losing
vs 1 year ago
N/A7-day trend
↓falling
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. -31.838, 27.182 · Open in Google Maps
About Xonxa Dam
As of October 5, 2026, Xonxa Dam is filled to 100.9% of its total capacity, holding roughly 117 Mm³ of water out of a maximum 116 Mm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has fallen by 2.6 percentage points.
Across the readings we hold for Xonxa Dam — 17 data points between May 31, 2026 and October 5, 2026 — the level has ranged from a low of 98.1% (June 3, 2026) to a high of 103.5% (September 28, 2026). On average the reservoir is fullest around September and at its lowest around May.
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 31.838°S, 27.182°E.
Key facts
- Current fill level
- 100.9%
- Water stored
- 117 Mm³
- Total capacity
- 116 Mm³
- 7-day change
- ▼ 2.6 pts
- Primary use
- Water supply
- River
- White Kei River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 31.838°S, 27.182°E
- Last updated
- October 5, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 5 Oct 2026 | 100.9% | 117 |
| 28 Sep 2026 | 103.5% | 121 |
| 21 Sep 2026 | 102.2% | 119 |
| 31 Aug 2026 | 99.9% | 116 |
| 24 Aug 2026 | 100.0% | 116 |
| 17 Aug 2026 | 100.1% | 117 |
| 10 Aug 2026 | 100.2% | 117 |
| 3 Aug 2026 | 100.0% | 116 |
| 27 Jul 2026 | 99.2% | 115 |
| 29 Jun 2026 | 100.2% | 117 |
| 22 Jun 2026 | 99.9% | 116 |
| 16 Jun 2026 | 100.0% | 116 |
Nearby reservoirs
See also: South Africa dam levels, explained — how the DWS Weekly State of Dams report becomes the national and provincial figures.