Mulga Lands

The Mulga Lands are an interim Australian bioregion of eastern Australia consisting of dry sandy plains scattered with mulga trees.

Located in inland New South Wales and Queensland these are flat plains with some low hills. and infertile sandy soil with a cover of grasses and shrubs with mulga and eucalyptus trees. The region contains areas of wetland, most of them only seasonally flooded, these include Lake Wyara and Lake Numalla, the Currawinya Lakes, Lake Bindegolly and others on the Warrego and the Paroo Rivers, the latter of which in particular remains relatively unmanaged and in its natural state.

The area has a very dry climate, with unpredictable low rainfall (450mm-650mm per year). The plains are drained in three directions: the eastern side by the Wallam, Nebine and Mungallala Creeks (tributaries of the Culgoa River), and the Warrego and Paroo rivers into the Murray-Darling basin; the southwest by the Bulloo River into wetlands near the Simpson Desert; and finally the northern side by the Barcoo River towards Lake Eyre. The Great Artesian Basin lies below these plains and more rich patches of wildlife are found around mound springs stemming from the basin.

The mulga lands are sparsely populated and mostly used for grazing sheep and cattle.

The Mulga Lands are defined by their plant life and poor soil and as such are distinct from neighbouring ecoregions, the Brigalow Belt to the east and the Barkly Tableland to the north, both of which have better soil and richer plant life. To the south and east however the Mulga lands merge into the Simpson Desert.

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