Some great river towns throughout Australia, but South Australia and Victoria with the mighty Murray River flowing through have some of the best.
Footage of the Murray up that way would be nice to see, I flew back from Brisbane last week, and the SA Murray around Mannum was simply bursting at the seams, all backwaters virtually as one with the river itself.
This is generally the time of year the Murray is at its fullest.
Re Billabong, the wiki definition you found is what I've always thought it meant . . . derived from bila, meaning "river", it may have been combined with bong or bung, meaning "dead".
It's an Australian term for an oxbow lake, an isolated pond left behind after a river changes course.
Billabongs are usually formed when the path of a creek or river changes, leaving the former branch with a dead end.
As a result of the arid Australian climate in which these "dead rivers" are often found, billabongs fill with water seasonally but can be dry for a greater part of the year (sometimes many years !).
Billabong clothing had a watered down version of it "derived from the Wiradjuri word "bilabaŋ" that refers to a "creek that runs only during the rainy season".