I have to address the thoughts that council shouldn't allow people to build in flood prone areas.
In Brisbane we have 1 large flood every 100 years (hence the name 1 in 100 year event). Prior to 1974 it was 1893 and of course again now. Before that, who knows as white blokes didn't live here then and no records were kept.
When the settlement was first built (and this would be the case in just about all major cities and 75% of towns), the built near water, river, stream, puddle. And this is the reason we have those settlements (oops I mean cities) in the same areas now. The infrastructure is still there from the late 1800's, and so are the houses, the cemetaries, the post office. Back then the mode of transport was horse, and horses need water just as much as we do.
Toowoomba is NOT on a flood plain and doesn't have a river right beside it. That was a flash flood. But they still have low lying areas (yes even on the very top of the range). Brisbane Council doesn't see that a 1 every 100 year issue is much of an issue at any other time than the worst time. People forget quickly, and the next generation won't even know about it other than by old photo's and stories.
If you are to take this attitude towards low lying areas, then please propose where we do build our houses? It is a large enough continent, but could we all fit if we are all high and dry? How much would the infrastructure then cost and who would pay it? What about freak events?
Kit_e