| Wimmera Walla-walla, Wamara, Bunnut, Culcatok, Barbarton, Billiwhin, Wudjum-biat, Bar, Barengi-djul, Yaigir, Wudiyedi, Barrh, Tarnorrer, Barkar, Guri-beb, Giridji-gal, Wadidirabul, Maripmunninnera | |
|---|---|
The Wimmera River at Jeparit | |
| Location | |
| Country | Australia |
| State | Victoria |
| Region | Murray Darling Depression (IBRA), Wimmera |
| Local government areas | Ararat, Northern Grampians, Yarriambiack, Horsham, Hindmarsh |
| Towns | Elmhurst, Crowlands, Glenorchy, Horsham, Dimboola, Tarranyurk, Jeparit |
| Physical characteristics | |
| Source | Pyrenees, Great Dividing Range |
| - location | below Ben Nevis, in a state forestry area south of Elmhurst |
| - coordinates | 37°16′29″S 143°15′00″E / 37.27472°S 143.25000°E |
| - elevation | 299 m (981 ft) |
| Mouth | Lake Hindmarsh, Lake Albacutya |
| - location | Outlook Creek, near Jeparit |
| - coordinates | 36°06′42″S 141°56′51″E / 36.11167°S 141.94750°E |
| - elevation | 79 m (259 ft) |
| Length | 278 km (173 mi) |
| Basin size | 24,011 km2 (9,271 sq mi) |
| Discharge | |
| - average | 13 m3/s (460 cu ft/s) |
| Basin features | |
| River system | Wimmera catchment |
| Tributaries | |
| - left | Mount Cole Creek, Six Mile Creek (Wimmera), Seven Mile Creek (Wimmera), Concongella Creek, Sheepwash Creek, Mount William Creek, Mackenzie River, Burnt Creek, Darragan Creek, Norton Creek |
| - right | Glenpatrick Creek, Glenlofty Creek, Spring Creek (Wimmera), Heifer Station Creek |
| National parks | Wyperfeld National Park, Little Desert National Park |
The Wimmera River is a river that does not always have water. It is in the Grampians and Wimmera areas of Victoria, Australia. The river starts in the Pyrenees, on the northern side of the Great Dividing Range. It flows mostly north and west and ends in Lake Hindmarsh and Lake Albacutya. These lakes sometimes dry up and do not flow into other rivers, but they are part of the larger Murray River system.
The Wimmera River begins in the Great Dividing Range below Elmhurst, between the towns of Ararat and Avoca. It flows north and west through Glenorchy, Horsham, Dimboola, and Jeparit. The river also forms the eastern edge of the Little Desert National Park. It has fourteen small rivers joining it, including the Mackenzie River. The river ends at Lake Hindmarsh near Jeparit. Over its 278 kilometers (173 miles), the river drops 220 meters (720 feet).
Sometimes, when Lake Hindmarsh fills and overflows, water flows through Outlet Creek to Lake Albacutya. But most years, the river does not reach these lakes, and the water stays in pools. On average, the lake fills once every twenty years. Recently, salty groundwater has entered the lower parts of the river, making the water saltier than sea water in some places.
The river is crossed by the Pyrenees Highway near where it starts, the Henty Highway south of Horsham, and the Western Highway west of Horsham and Dimboola.
The Wimmera River has distributaries, which are smaller rivers that split off from it. These are Dunmunkle Creek and Yarriambiack Creek. They take water away from the Wimmera River during floods or when there is a lot of water.
The health of the Wimmera River was expected to get better after the Wimmera-Mallee pipeline project finished in 2008. This project replaced old and wasteful water systems used for farms and irrigation with a new pipeline system. Before the project, up to 90% of the water taken from the Wimmera River was lost because it evaporated or soaked into the ground. The new pipeline system was expected to use water much more efficiently. This meant less water would be taken from the river, which was hoped to help more water stay in the river for the environment.

The river has many names in different Aboriginal languages. In the Djadjawurrung and Jardwadjali languages, it is called Walla-walla, but the meaning is not known. It is also called Wamara, which might mean woomera or "throwing stick." In the Jardwadjali language, the river is called Bunnut. The Bernett people are a group of the Jardwadjali people. Another name is Barbarton, where "bar" means "river." The Barbardinbalug were a Jardwadjali group living near the Wimmera River. In the Djadjawurrung language, the river is called Culcatok, but the meaning is not known. In the Djabwurrung, Jardwadjali, and Wergaia languages, the river is called Billiwhin, but the meaning is not known.
In the Wergaia language, the river has many names, including:
In the Djabwurrung language, the river has other names including:
In another local Aboriginal language, the river is called Barrh, but the meaning is not known.
The river’s colonial name comes from the name of a large farm area. Gold was found in the river in 1866.