Orange–Fish River Tunnel
| Orange–Fish River Tunnel | |
|---|---|
Inlet tower of the Orange-Fish Tunnel at Oviston | |
| Overview | |
| Coordinates | |
| Status | Active |
| System | Orange-Fish Water Scheme |
| Waterway | Orange River |
| Start | Gariep Dam |
| End | Teebus Spruit → Groot Brak River → Great Fish River |
| Operation | |
| Opened |
|
| Character | Water tunnel |
| Technical | |
| Length | 82.8 kilometres |
| Tunnel clearance | 6 metre diameter |
| Route map | |
The Orange–Fish Tunnel, constructed between 1966 and 1975, is an 82.8-kilometre-long (51.4-mile) irrigation tunnel in central South Africa, built to divert water from the Orange River to the Fish River valley. It is the longest continuous enclosed aqueduct in the southern hemisphere.