Forecast heavy rainfall could see a Victorian dam spilling for the first time in 26 years, potentially contributing to flooding downstream.
The Dartmouth Dam has overflowed four times since its completion in 1979, the last time being in 1996.
Murray-Darling Basin Authority operators are closely managing water outflows from Hume and Dartmouth dams above the Murray as rains push them towards capacity, Senior Director of River Operations Joseph Davis told AAP.
