Both the Darling and Murray rivers are meandering rivers. A meandering river is a river that has a sinuous course. This sinuosity is caused by the erosion of the river bank by the water. As the water flows around a bend, it erodes the bank on the outside of the bend and deposits sediment on the inside of the bend. This process creates a series of bends, or meanders, in the river's course.
The meanders in the Darling-Murray river system are important because they create a variety of habitats for plants and animals. The meanders also help to slow down the flow of water, which can help to prevent flooding.