Dam · Eastern Cape · South Africa · DWS
Lake Arthur Dam
63.1% full
Total capacity
11.3 Mm³
River
Tarka River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-32.226°S, 25.819°E
Last updated
2026-08-31
Current fill
63.1%vs 7 days ago
-0.4%losing
vs 1 year ago
N/A7-day trend
→stable
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. -32.226, 25.819 · Open in Google Maps
About Lake Arthur Dam
As of August 31, 2026, Lake Arthur Dam is filled to 63.1% of its total capacity, holding roughly 7 Mm³ of water out of a maximum 11 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 (-0.4 pts).
Across the readings we hold for Lake Arthur Dam — 14 data points between May 31, 2026 and August 31, 2026 — the level has ranged from a low of 55.3% (May 31, 2026) to a high of 64.2% (August 17, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 32.226°S, 25.819°E.
Key facts
- Current fill level
- 63.1%
- Water stored
- 7 Mm³
- Total capacity
- 11 Mm³
- 7-day change
- ▼ 0.4 pts
- Primary use
- Water supply
- River
- Tarka River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 32.226°S, 25.819°E
- Last updated
- August 31, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 31 Aug 2026 | 63.1% | 7 |
| 24 Aug 2026 | 63.5% | 7 |
| 17 Aug 2026 | 64.2% | 7 |
| 10 Aug 2026 | 63.8% | 7 |
| 3 Aug 2026 | 63.8% | 7 |
| 27 Jul 2026 | 63.3% | 7 |
| 29 Jun 2026 | 61.9% | 7 |
| 22 Jun 2026 | 61.7% | 7 |
| 16 Jun 2026 | 60.5% | 7 |
| 9 Jun 2026 | 60.5% | 7 |
| 8 Jun 2026 | 55.5% | 6 |
| 7 Jun 2026 | 55.5% | 6 |
Nearby reservoirs
See also: South Africa dam levels, explained — how the DWS Weekly State of Dams report becomes the national and provincial figures.