Dam · Eastern Cape · South Africa · DWS
Grassridge Dam
64.5% full
Total capacity
44.5 Mm³
River
Groot Brak River
Basin
Unknown
Primary use
water supply
Operator
DWS South Africa
Coordinates
-31.768°S, 25.466°E
Last updated
2026-06-29
Current fill
64.5%vs 7 days ago
-8.9%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. -31.768, 25.466 · Open in Google Maps
About Grassridge Dam
As of June 29, 2026, Grassridge Dam is filled to 64.5% of its total capacity, holding roughly 29 Mm³ of water out of a maximum 45 Mm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 8.9 percentage points.
Across the readings we hold for Grassridge Dam — 8 data points between May 31, 2026 and June 29, 2026 — the level has ranged from a low of 64.5% (June 29, 2026) to a high of 91.3% (May 31, 2026).
It is operated by DWS South Africa primarily for water supply. It lies within the Unknown basin at 31.768°S, 25.466°E.
Key facts
- Current fill level
- 64.5%
- Water stored
- 29 Mm³
- Total capacity
- 45 Mm³
- 7-day change
- ▼ 8.9 pts
- Primary use
- Water supply
- River
- Groot Brak River
- River basin
- Unknown
- Operator
- DWS South Africa
- Coordinates
- 31.768°S, 25.466°E
- Last updated
- June 29, 2026
Recent readings
| Date | Fill level | Volume (Mm³) |
|---|---|---|
| 29 Jun 2026 | 64.5% | 29 |
| 22 Jun 2026 | 73.4% | 33 |
| 16 Jun 2026 | 72.5% | 32 |
| 9 Jun 2026 | 72.5% | 32 |
| 8 Jun 2026 | 71.4% | 32 |
| 7 Jun 2026 | 71.4% | 32 |
| 3 Jun 2026 | 71.4% | 32 |
| 31 May 2026 | 91.3% | 41 |
Frequently asked questions
What is the current water level of Grassridge Dam?
As of June 29, 2026, Grassridge Dam is at 64.5% of its capacity, holding approximately 29 Mm³ of water, according to DWS South Africa data.
Is Grassridge Dam reservoir full?
No. As of June 29, 2026, Grassridge Dam is within its normal operating range at 64.5% of its capacity, so it is not full.
Is the water level at Grassridge Dam rising or falling?
The level at Grassridge Dam is falling — it dropped 8.9 percentage points over the latest week on record.
How much water can Grassridge Dam hold?
Grassridge Dam has a total capacity of 45 Mm³.
Where is Grassridge Dam reservoir located?
Grassridge Dam is located in Eastern Cape, South Africa, within the Unknown basin (coordinates 31.768°S, 25.466°E).
What is Grassridge Dam used for?
Grassridge Dam is used primarily for water supply, and is managed by DWS South Africa.
Nearby reservoirs
See also: South Africa dam levels, explained — how the DWS Weekly State of Dams report becomes the national and provincial figures.