Onyx River
| Onyx River | |
|---|---|
Scientists take depth and velocity readings in the Onyx River (1999) | |
| Location | |
| Country | Antarctica |
| Physical characteristics | |
| Source | Lake Brownworth |
| • coordinates | 77°25′48″S 162°45′0″E / 77.43000°S 162.75000°E |
| Mouth | Lake Vanda |
• coordinates | 77°33′24″S 161°45′0″E / 77.55667°S 161.75000°E |
| Length | 32 km (20 mi) |
| Discharge | |
| • maximum | 20 cubic metres per second (700 cu ft/s) |
The Onyx River is an Antarctic meltwater stream that flows westward through the Wright Valley from Wright Lower Glacier and Lake Brownworth at the foot of the glacier to Lake Vanda, during the few months of the Antarctic summer. At 32 kilometres (20 mi) in length, it is the longest river in Antarctica.