About Waranga Basin
Waranga Basin is situated on the traditional lands of the Yorta Yorta and Taungurung people and is located between the Goulburn and Campaspe River basins, eight (8) kms northeast of the town of Rushworth.
It is an important off-river storage, where water is diverted from the Goulburn River at Goulburn Weir, via the Stuart Murray Canal and Cattanach Canal. The basin has a small catchment area of its own with a capacity of 432,360 ML and is one of the largest storages in the Goulburn System.
History
The name Waranga is thought to have come from the word warranga (sing) in reference to the large bird population that inhabited the area. In 1905 its formation commenced at the site of an original wetland (Gunn’s Swamp).
It was completed over three years using picks and shovels, and horse and drays to create an eight (8) metre high and seven (7) kilometre long embankment, and at the time of construction was described as the largest project of its kind in the world. Between 1915 and 1921, the embankment was raised to its current level and maximum height of 12.2 metres. It was the first major dam constructed in Australia and is the fourth largest inland waterway in Victoria.
The storage inundated the original Echuca and Waranga Trust channel that had been constructed to convey water from the Goulburn River to the Murray at Echuca.
Operations
The water storage is off river and has a capacity of 432,360 ML. It supplies water to the Central Goulburn, Rochester-Campaspe and Loddon Valley irrigation areas and nearby towns of Rushworth, Kyabram, Stanhope and Tongala.
The water is directed to Waranga Basin from the Goulburn Weir. Normally, only about three-quarters of Waranga Basin's capacity of 432,360 ML can be used by gravity flow from the Basin's two outlets. In April 2009 as well as 2002, 2007 and 2008, Goulburn-Murray Water pumped up to 90,000 ML of water from below the normal minimum operating level in Waranga Basin to assist drought stricken farmers in the Goulburn Irrigation System.
Pumping also occurred in 1926. The 2009 operation is estimated to have cost around $2 million. This project was a part of a range of measures Goulburn-Murray Water implemented to maximise the amount of water available for use in such a dry year.
Location
Waranga Basin is located between the Goulburn and Campaspe River basins, approximately 8 km north-east of Rushworth.