Lake Mulwala, a man–made reservoir created through the construction of the Yarrawonga Weir across the Murray River, is located between Bundalong and Yarrawonga in the Hume region of Victoria and Mulwala in the Riverina region of New South Wales, in eastern Australia.

The weir was constructed in 1939 to provide water for irrigation of the surrounding district. The weir also serves as a crossing of the Murray between the two towns; in addition to the crossing located via the Mulwala Bridge.