The Waranga Dam is a major earthfill embankment dam with an uncontrolled spillway located approximately 150 kilometres (93 mi) north of Melbourne in the North Central region of the Australian state of Victoria.

The area now covered by the Waranga Basin includes a swamp that was known as Warranga (an indigenous word) or Gunn's after William Gunn, one of the early pastoralists who established his squatting run, also called Waranga, in the area surrounding the swamp.

[3] Construction of the earth dam began in 1905 and was completed in 1915 using picks, shovels and horse-drawn scoops.

Waranga Basin stores water flowing downstream from Lake Eildon as well as having a catchment area of its own.

However, the Waranga Western Channel takes some of the water 180 kilometres (110 mi) to Pyramid Hill and Boort.