Western Australia

(map)

Reportedly, this flood myth predates the coming of Europeans, but the detail that the proud race in the myth was white was added after Australia was colonized by the British. It was know by "all the aboriginal tribes from the Moore River to Shark's Bay in Western Australia."

Long ago, two races, one white and one black, lived on opposite shores of a great river. At first they were on friendly terms, intermarrying, feasting together, etc. But the whites were more powerful and had better spears and boomerangs, so they came to feel superior and broke off relations. Some time later, it rained for several months. The river overflowed and forced the blacks to retreat into the hinterland. When the rains stopped and the waters receded, the blacks returned, to find that their neighbors had vanished under a wide sea.

Augustus Oldfield, "On the Aborigines of Australia", Transactions of the Ethnological Society of London, new series, 3 (1865): 232, 234-235.