As well as the two main rivers in the river system there are many tributaries and river basins that cover a wide area of eastern Australia including southern Queensland, much of New South Wales, northern Victoria and part of South Australia. The importance of the rivers, and water in general, to people living in and working the land in those areas is one of the themes discussed, especially with the controversy about the implementation of irrigation systems in some regions.
As the author's discovery tours took place towards the end of a long drought that affected much of Australia resulting in the implementation of severe water restrictions, the important topics of water supply and water management feature throughout the book. During Chris Hammer's travels we also learn about the history of the regions he visits and how many of the regions have had to adapt or are changing. He interviewed a variety of local residents, each with a view of what was wrong with the rivers and water supply making it obvious that one solution will not please everyone.
As with The Coast, many of the regions visited are places I have visited and also where family members have lived on properties in the past. However this is a book that any Australian should read for an overview of an important part of our country and the country's river systems.
Additional information:
Millennium Drought (River Murray 2002-2010) - Dept for Environment and Water
The Drought That Changed Us - ABC

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