“Word Map is mapping Australian regionalisms—words, phrases or expressions used by particular language groups.” Click on “Map search” at the left and you’ll get a map divided into regions; click on one to find words and phrases peculiar to it. There’s also an A-Z list, and if you’re a regional Australian you can add your own. (Via Taccuino di traduzione.)
Addendum. The comments contain an interesting query about the Kentucky dialect verb “gom” and possible etymologies.
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