| The Old | |
| Pushpin Map: | Australia Victoria |
| Pushpin Map Caption: | Location of The Old River mouth in Victoria |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | Victoria |
| Subdivision Type3: | Region |
| Subdivision Name3: | Victorian Midlands (IBRA), Western District |
| Subdivision Type5: | Local government area |
| Subdivision Name5: | Moorabool |
| Length: | 7km (04miles) |
| Source1: | Mount Bullengarook, Blackwood Ranges, Great Dividing Range |
| Source1 Location: | Lerderderg State Park |
| Source1 Coordinates: | -37.5183°N 144.4308°W |
| Source1 Elevation: | 575m (1,886feet) |
| Mouth: | confluence with the Lerderderg River |
| Mouth Location: | below Mount Blackwood |
| Mouth Coordinates: | -37.5594°N 144.3969°W |
| Mouth Elevation: | 271m (889feet) |
| River System: | Port Phillip catchment |
| Custom Label: | National park |
| Custom Data: | Lerderderg State Park |
| Extra: | [1] [2] |
The Old River is a perennial river of the Port Phillip catchment, located in the Western District region of the Australian state of Victoria.
The Old River rises below Mount Bullengarook, part of the Blackwood Ranges of the Great Dividing Range, in remote country within the Lerderderg State Park. The river flows generally south by west before reaching its confluence with the Lerderderg River below Mount Blackwood. The river descends approximately over its 7km (04miles) course.[2]