You are trying to solve the problem of lack of water to existing people who live there. The problem at the core is the area is arid and infertile. You are tryin

You are trying to solve the problem of lack of water to existing people who live there. The problem at the core is the area is arid and infertile. You are trying to solve the immediate problem instead of the root cause. Fundamentally altering these areas will not only solve the immediate problem but cause economic growth and solve a myriad of other problems like food shortages, homelessness,etc... you are talking about the equivalent of repairing roads, I am suggesting building the equivalent of the interstate highways which were until recently the biggest spending ever and resulted in the biggest economic growth ever.