O'Shannassy River
| O'Shannassy Ligar River East Branch, O'Shannassy River East Branch | |
|---|---|
O'Shannassy River Crossing | |
| Etymology | In honour of John O'Shanassy [sic] |
| Location | |
| Country | Australia |
| State | Victoria |
| Region | South Eastern Highlands (IBRA), Greater Metropolitan Melbourne |
| Local government area | Yarra Ranges Shire |
| Physical characteristics | |
| Source | Yarra Ranges, Great Dividing Range |
| • location | below Mount Observation |
| • coordinates | 37°33′29″S 145°49′28″E / 37.55806°S 145.82444°E |
| • elevation | 744 m (2,441 ft) |
| Mouth | confluence with the Yarra River |
• location | west of McMahons Creek |
• coordinates | 37°42′43″S 145°45′34″E / 37.71194°S 145.75944°E |
• elevation | 338 m (1,109 ft) |
| Length | 15 km (9.3 mi) |
| Basin features | |
| River system | Port Phillip catchment |
| Tributaries | |
| • right | Deep Creek (Yarra Ranges, Victoria), Smith Creek (Yarra Ranges, Victoria) |
| National park | Yarra Ranges National Park |
The O'Shannassy River is a perennial river of the Port Phillip catchment, located in the north-eastern Greater Metropolitan Melbourne region of the Australian state of Victoria.