Sustainable water and energy development requires public participation in decision making just as much as money and technical expertise. The Nature Conservancy makes a strong case that smart planning needs to address the systems level rather than just individual dams. It now needs to expand its approach and give the rights of affected communities the place they deserve.
If you accept that water is the most valuable commodity on earth, then there is no financial argument against its production at whatever cost. Hopefully the world, regardless of national aspiration, political ideology, and systems of governance, will come to that conclusion in time to assuage our thirst for survival.