Dam · Mpumalanga · South Africa · DWS
Longmere Dam
101.6% full
Total capacity
4.2 hm³
River
Wit River
Basin
Inkomati-Usuthu
Primary use
water supply
Operator
DWS South Africa
Coordinates
25.280°S, 31.001°E
Last updated
2026-10-05
Current fill
101.6%vs 7 days ago
Stale7-day trend
StaleDrought context
Rain over the last three months · 11 October 2026
Moderately wet
In the three months to 11 October 2026 the area around Longmere Dam had more rain than normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +1.06). Rain, not storage. South Africa drought figures →
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. 25.280°S, 31.001°E · Open in Google Maps
About Longmere Dam
As of October 5, 2026, Longmere Dam is filled to 101.6% of its total capacity, holding 4.3 hm³ of water out of a maximum 4.2 hm³. The reading is past the freshness window, so it is shown as stale.
The 7-day change is not shown, because the latest reading is past the freshness window.
Across the readings we hold for Longmere Dam — 18 data points between October 19, 2025 and October 5, 2026 — the level has ranged from a low of 80.3% (October 19, 2025) to a high of 101.6% (May 31, 2026). On average the reservoir is fullest around May and at its lowest around October.
It is operated by DWS South Africa primarily for water supply. It lies within the Inkomati-Usuthu basin at 25.280°S, 31.001°E.
Key facts
- Current fill level
- 101.6% of total capacity
- Water stored
- 4.3 hm³
- Total capacity
- 4.2 hm³
- 7-day change
- Stale
- Primary use
- Water supply
- River
- Wit River
- River basin
- Inkomati-Usuthu
- Operator
- DWS South Africa
- Coordinates
- 25.280°S, 31.001°E
- Last updated
- October 5, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 5 Oct 2026 | 101.6% | 4.3 |
| 28 Sep 2026 | 101.6% | 4.3 |
| 21 Sep 2026 | 101.1% | 4.2 |
| 31 Aug 2026 | 101.3% | 4.3 |
| 24 Aug 2026 | 101.3% | 4.3 |
| 17 Aug 2026 | 101.3% | 4.3 |
| 10 Aug 2026 | 100.4% | 4.2 |
| 3 Aug 2026 | 100.4% | 4.2 |
| 27 Jul 2026 | 101.1% | 4.2 |
| 29 Jun 2026 | 100.9% | 4.2 |
| 22 Jun 2026 | 101.1% | 4.2 |
| 16 Jun 2026 | 101.1% | 4.3 |
Nearby reservoirs
See also: South Africa dam levels, explained — how the DWS Weekly State of Dams report becomes the national and provincial figures.