| Douglas Weir | |
|---|---|
| Official name | Douglas Weir |
| Location | Northern Cape, South Africa |
| Opening date | 1977 |
| Dam and spillways | |
| Height | 10 m |
| Length | 1063 m |
| Impounds | Vaal River |
| Reservoir | |
| Creates | Douglas Weir Reservoir |
| Capacity | 16 700 000 m³ |
| Surface area | 799 ha |
Douglas Weir is dam on the Vaal River, near Douglas, Northern Cape, South Africa. It was established in 1977.