The contribution of River Murray tributaries to the flooding of Barmah forest

Abstract

The contribution of River Murray tributaries to the flooding of the Barmah river red gum forest was examined. The main stem of the River Murray above Lake Hume was the major source. Removal of this would lead to a 55% decrease in forest flooding. Removal of either the Ovens or the Mitta Mitta Rivers would give a 30% reduction in flooding. Removal of the Kiewa River would give a 15% reduction in flooding. All tributaries act to some extent in concert. A backwater influence due to high water levels at the downstream confluence of the Goulburn and Murray Rivers may cause high water levels at Barmah. Because of the short-lived nature of these high water levels it is unlikely that such floods penetrate far into the forest.