Dam · KwaZulu-Natal · South Africa · DWS
Nagle Dam
93.2% full
Total capacity
23.3 Mm³
River
Mgeni River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-29.591°S, 30.627°E
Last updated
2026-08-31
Current fill
93.2%vs 7 days ago
-3.0%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. -29.591, 30.627 · Open in Google Maps
About Nagle Dam
As of August 31, 2026, Nagle Dam is filled to 93.2% of its total capacity, holding roughly 22 Mm³ of water out of a maximum 23 Mm³. At this level the reservoir is high.
Over the most recent week on record the fill level has fallen by 3.0 percentage points.
Across the readings we hold for Nagle Dam — 14 data points between May 31, 2026 and August 31, 2026 — the level has ranged from a low of 91.7% (August 10, 2026) to a high of 100.5% (August 3, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 29.591°S, 30.627°E.
Key facts
- Current fill level
- 93.2%
- Water stored
- 22 Mm³
- Total capacity
- 23 Mm³
- 7-day change
- ▼ 3.0 pts
- Primary use
- Water supply
- River
- Mgeni River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 29.591°S, 30.627°E
- Last updated
- August 31, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 31 Aug 2026 | 93.2% | 22 |
| 24 Aug 2026 | 96.2% | 22 |
| 17 Aug 2026 | 93.5% | 22 |
| 10 Aug 2026 | 91.7% | 21 |
| 3 Aug 2026 | 100.5% | 23 |
| 27 Jul 2026 | 95.5% | 22 |
| 29 Jun 2026 | 99.9% | 23 |
| 22 Jun 2026 | 99.0% | 23 |
| 16 Jun 2026 | 97.2% | 23 |
| 9 Jun 2026 | 97.2% | 23 |
| 8 Jun 2026 | 95.9% | 22 |
| 7 Jun 2026 | 95.9% | 22 |
Nearby reservoirs
See also: South Africa dam levels, explained — how the DWS Weekly State of Dams report becomes the national and provincial figures.