NEW : Police say 75,000 people have died in flooding since Wednesday . Dawson also warned people not to drive through flooded communities , saying that could produce waves that could push water into homes that have so far escaped interior damage . Police : City of 10 now cut off by floodwaters . Forecasters expect water levels will crest on November 30 . Australian prime minister says damages could cost `` hundreds of millions of dollars ''
NEW : Police say 75,000 people have died in flooding since Wednesday . Police : City of 10 now cut off by floodwaters . Forecasters expect water levels will crest on November 30 . Australian prime minister says damages could cost `` hundreds of millions of dollars ''