Flyer for Chaffey brothers' schemeGeorge and William Chaffey  were Canadians who had worked on irrigation schemes in California. They  were invited to Australia by Alfred Deakin during a time of drought. The Chaffey brothers’ first irrigation settlement was at Mildura in northern Victoria, followed by one at Renmark, South Australia. In 2007-08,  irrigated land comprised less than 0.5 per cent of all agricultural land in Australia but yielded 28 per cent of the total value of agricultural production. >Irrigation facts