FORMER Sunraysia water authority boss Ron Dudley fears a proposal to pipe water from northern Australia to drought-proof much of the western Queensland interior could provide toxic and poisonous cane toads with a "freeway" into the Murray-Darling Basin.

Mr Dudley, who was the Sunraysia Water Board CEO for a decade and involved in the water industry for much of his life, said while he was not opposed to the scheme, he was concerned the potential