I think there are some other solutions which worth thinking before water transfer. First of all, the high-water consuming industries should be moved from dry areas towards sea coasts, where they can make use of brine water after it is desalinated. Second, the agriculture should be wiser and the irrigation systems should be more efficient. These are the top most water consuming industries.

Of course, the important part of water management related to domestic and personal use is putting  tight rules and high tax on high water consuming civilians

I hope this can address your question

I think these solutions are much easier and cheaper than water transport which require high construction investment followed by high maintenance expenses for decades

Dr Azin

Thanks for your comment.

It would be better if the theory be provided documented and based on the experience of other countries.

It is not a matter of developing or developed countries. Water use and water management should be local and a domestic approach is extremely important. Any change in environment and nature will decrease the quality of life by the time.

I think below link is useful for this subject: http://www.impactnations.org/what-we-do/i-thirst-water-program?gclid=COXA6J2S8MQCFRQatAodjUkAJw

water is an essential good, as important as food. Water crisis exist where a population has developed which requires more water than what is available. This can be because too much intake is for agriculture and not available for the people for consumption, or that more and more water is polluted and therefore not available. It is crucial to make an assessment of water demand and supply and identity where water can be saved. At times it might be possible to tap new sources (e.g. rain water collection or desalinization). Also to bring water from elsewhere might be an option as long as this does not lead to scarcity in the source regions and cause conflicts.  

During the drought in Tuvalu in 2011 water had to be brought from outside the country. Chennai in South India receives part of its drinking water from a couple of hundreds of kilometers from the south, where there is a conflict between Tamil Nadu and Karnataka about the sharing of the water of the Cauvery River. These examples show how challenging solutions themselves are and that water transfers need to be feasible, not just transferring problems to other locations, etc....