I have a garden in inland NSW that needs practically no watering. It mimics the White box - Cypress pine woodland that grows naturally here. It is not a vege garden, which would be a separate project.
You will find discussion and photos here:
http://www2b.abc.net.au/science/scribblygum/newposts/505/topic505623.shtm
Incidentally, some photos include my low-energy house, discussed in that thread of this forum.