What is the name of the New South Wales, Australian city that was proclaimed in 7 September 1984 and has a suburn named Dora Creek? 
Dora Creek, New South Wales: Dora Creek is a small rural suburb of the City of Lake Macquarie in New South Wales, Australia, located west of Lake Macquarie in New South Wales and north of the town of Morisset. City of Lake Macquarie:  It was proclaimed as a city from 7 September 1984.
City of Lake Macquarie