The Avoca River, an inland intermittent river of the northcentral catchment, part of the Murray-Darling basin, is located in the lower Riverina bioregion and Central Highlands and Wimmera regions of the Australian state of Victoria. The headwaters of the Avoca River rise on the northern slopes of the Pyrenees Range and descend to flow into the ephemeral Kerang Lakes.
Features and location
The Avoca River drains a substantial part of central Victoria. It rises at the foot of Mount Lonarch, near the small town of Amphitheatre, and flows north for joined by thirteen minor tributaries, and through the towns of , and . Two major distributaries leave the Avoca River between Charlton and Quambatook: Tyrrell Creek, flowing to Lake Tyrrell, and Lalbert Creek flowing to Lake Lalbert.
Although the Avoca River basin is part of the Murray-Darling basin, the Avoca River does not empty into the Murray. Nowhere a large stream, it dwindles as it flows north, eventually terminating in the Kerang Lakes, Most of the water flowing in the Avoca River originates in the small upper portion of the catchment area, where rainfall averages about per year,
Of all the Victorian rivers in the Murray-Darling basin, the Avoca River is the most variable.