Lake Eyre.

Only has fish in it when it floods, which is like once in a hundred years, ecept it has flooded twice in the last few years so that theory went out of the window !!! LOL

FYI, It doesn't have to rain anywhere near Lake Eyre for it to flood, it just needs to rain up North in the river catchments that flow into it.

Gets deep enough to sail boats on but not much more.

It is a superb lake when full, the breeding ground of thousands of birds.