Is Australia's premier an idiot not to dam and use river water to fight the drought and fires?

no. you have a bigger picture to consider, mainly the wild life in the water ways.

To have River Water you need RAIN.  There is no Rain.

Oh, like the current PM could have made all that happen overnight.  Don't be a fool.  Dams are not universal cures for drought and fire anyway.  Just look at the recent history in California.

He IS an idiot, but so are you thinking that that method is possible. 

Yes he is a fool. He should have been using river water before the fires started. Just to irrigate. California would not be on fire if they hadn't wiped out the beavers. Beavers conserve freshwater and hold it on the land to moisten it. 

The fires are inland, how to they get the water there.

Buckets?

I sure think that he is. There are millions of gallons of freshwater flowing into the sea night and day there.