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Large dust storms are capable of carrying enormous dust loads. The dust storm on 1st November 1994 transported at least 15 Mt of dust from the Queensland Channel Country northward over Mt Isa and out over Cape York and the Gulf of Carpentaria. Relative erodibilities based upon dust flux measurements on three major land types, dunefields, alluvial floodplains and downs country at Diamantina National Park, show that the channel alluvium was the most erodible, followed by the dunefields and downs country. Estimated soil loss rates are, however, very sensitive to estimates of the area of each land type.