The Site, an extensive floodplain wetland, is one of the largest freshwater wetlands in the Murray-Darling Basin. Wetland types in the Site range from semi-permanent and frequently inundated marshes to ephemeral wetlands. Black box (Eucalyptus largiflorens) and river red gum (Eucalyptus camaldulensis) woodlands in the Site provide nesting sites and habitats for waterbirds and woodland birds. At least 16 nesting species have been recorded, including large numbers of breeding egrets, herons, ibis and cormorants. Globally threatened species such as the critically endangered Murray cod (Maccullochella peeli peeli), the endangered Australasian bittern (Botaurus poiciloptilus) and the Australian painted snipe (Rostratula australis) are also found in the Site. The marshes have significant cultural values for the people of the Wayilwaan Aboriginal nation.