Gelen Una
| Dam Name | Gelen Una |
| River | Losasa |
| Main Basin | Orange |
| Sub Basin | Vaal |
| Near City | Vryburg |
| Administration City | North-West |
| Country | South Africa |
| Year | 1983 |
| Dam Height | -99 |
| Dam Length | -99 |
| Area(Sqkm) | 0.1 |
| Area(Polygonal) | 0.1 |
| Capital Expenditure | 0.8 |
| Depth(M) | 8 |
| Avg Displacement Of Water | 520 |
| Catchment Area In Sqkm | 1086 |
| Status | 3: Fair |
| Longitude | 24.97375 |
| Latitude | -26.992917 |
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