Onyx River

Onyx River
Onyx River flowing into Lake Vanda
Location
Country	Antarctica
Physical characteristics
Source	Lake Brownworth
• coordinates	77°25′48″S 162°45′0″E / 77.43000°S 162.75000°E / -77.43000; 162.75000
Mouth	Lake Vanda
• coordinates	77°33′24″S 161°45′0″E / 77.55667°S 161.75000°E / -77.55667; 161.75000
Length	32 km (20 mi)
Discharge
• maximum	20 cubic metres per second (700 cu ft/s)

The Onyx River is an Antarctic meltwater stream which 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.^[1]