The largest wetland on Australia’s second longest river, the Murrumbidgee in the southern Murray-Darling Basin, is drying up. This is bad news for the plants, animals and people who rely on the vast Lowbidgee Floodplain. So it’s important to understand what is going on, and whether we can do anything about it.
Our new research used computer modelling to study past and future river flows. We examined natural flows in the lower Murrumbidgee River between 1890 and 1927, before humans started changing the river. We compared these flows to what happened after big dams went in and more water was taken out for irrigation. Then, we modelled how climate change is likely to influence flows in future.