| Plenty | |
| Name Native: | [1] |
| Map: | Plentyriver.png |
| Map Size: | 250 |
| Pushpin Map Size: | 250 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | Victoria |
| Subdivision Type3: | Region |
| Subdivision Name3: | South East Coastal Plain (IBRA), Greater Melbourne |
| Subdivision Type4: | Local government area |
| Subdivision Name4: | City of Whittlesea |
| Subdivision Type5: | Towns |
| Subdivision Name5: | , |
| Length: | 47km (29miles) |
| Source1: | Mount Disappointment |
| Source1 Location: | near |
| Source1 Elevation: | 247m (810feet) |
| Mouth: | confluence with the Yarra River |
| Mouth Location: | near |
| Mouth Coordinates: | -37.7489°N 145.0981°W |
| Mouth Elevation: | 20m (70feet) |
| River System: | Port Phillip catchment |
| Tributaries Right: | Scrubby Creek, Bruces Creek, Barber Creek |
| Custom Label: | National park |
| Extra: | [2] [3] |
The Plenty River is a perennial river[1] of the Port Phillip catchment, located in the north-eastern Greater Melbourne region of the Australian state of Victoria.
The Plenty River rises in the forested slopes of Mount Disappointment, northwest of . The river flows generally south, joined by three minor tributaries, before reaching its confluence with the Yarra River southeast of . The river descends over its 47km (29miles) course.[3]
The river is impounded by the Toorourrong Reservoir[3] and is the source of Melbourne's first major water supply reservoir, the Yan Yean Reservoir, completed in 1857.[4]
Along the lower reaches of the river, both the Plenty River Trail and the Rosanna Golf Club can be located.