Osha (river)
| Osha | |
|---|---|
| Physical characteristics | |
| Mouth | Irtysh | 
 • coordinates  | 57°12′42″N 73°40′13″E / 57.21167°N 73.67028°E | 
| Length | 530 km (330 mi) | 
| Basin size | 21,300 km2 (8,200 sq mi) | 
| Basin features | |
| Progression | Irtysh→ Ob→ Kara Sea | 
The Osha (Russian: Оша) is a river in Omsk Oblast, Russia, a left tributary of the Irtysh. It is 530 kilometres (330 mi) long, and has a drainage basin of 21,300 square kilometres (8,200 sq mi). The river flows across lake Tenis.