To understand the the system we need to understand the the people who live in the system and each group along the river has different issues and not all of the issues are considered are considered with their due weight. How does one evaluate the the true weight for each demand upon the system. See this link to understand the people and the needs of the system https://www.youtube.com/watch?v=18MM0MbIkkA
Here is one of the documentaries done on the river https://www.youtube.com/watch?v=xrcy3fNBcwk
Part of the plan to manage the system is to manage the amount of water extracted from the river system and here are some links that address some of these issues https://www.youtube.com/watch?v=rsdGZZSaUXw and https://www.youtube.com/watch?v=oR0GLDiPxUs
Some other issues which it is hard to find a lot of evidence on is the effect of the mining industry has on the water of the the Murray Darling Basin. Mining uses a lot of water and the Coal Seam Gas extraction can also bring the the system huge challenges. until we consider that water is a valuable resource that needs to be protected and the water not wasted. While the we may need to control the flow somewhat it seems that we ought to stop blocking the river with on river dams and commence creating off river dams. The benefit of the off river dam is that they can be located in better chosen places than a on river dam as well they ought to dug deep so as to limit the evaporation from these storage areas and the river can continue to run as only the excessive flow will be extracted and the environmental flow will continue to deliver greater health to the river.
I am certain many have the capacity to contribute to this policy development so that we have the best policy we can get so we will bring back the best of the river basin we possibly can. Please send your contributions to my email at : firstname.lastname@example.org