Very much a work in progress, and seeing as I won't be doing anything concrete until 2009 or 2010, it's bound to change.
My criteria are:
Australia (because it has very fault lines, volcanoes, nukes)
Australia (because a continent means one can always relocate to a better environment)
Australia (because it's where I live)
Australia (because any survivors are more likely to be civil than many other countries)
Inland and high up - in case of tsunamis
Not too close to Sydney, because it has a little nuclear reactor, used for sterilising medical equipment etc
Near to Melbourne, and near a train line, and near a reasonable-sized town (because I want to make it easy on myself, so it actually gets done)
I'm leaning towards the hills south-east of Albury, NSW (has a twin town over the border in Victoria called Wodonga). The town is a good-size of 80,000 people (so any supplies and contractors are available), is a transport hub (road and rail). It is 325kms inland, and there are mountains nearby, if we need to flee higher...
Map of Australia showing regions 600m above sea-level:
(Albury is near the bottom, just above Melbourne)
Google Maps showing the terrain around Albury:
http://maps.google.com.au/maps?ie=UTF8& ... 49&t=p&z=8
Cheap land is the plan, with exisiting buildings, quality doesn't matter.
Unfortunately the land around there isn't cheap like in the desert, so it might take several years to find the right kind of bargain...
(if this ends up being my survival spot, that's the most I'll give away online in terms of location)