Freshwater is a finite and precious resource that is essential for sustaining life, as are the natural systems that provide and maintain its supply. Irrigation has been a vital input for food security and sustainable livelihoods, especially in developing countries during the Green Revolution, since it has increased income and improved health and nutrition, locally, and by bridging the gap between production and demand, nationally. As demand increases, this vital, irreplaceable resource is becoming increasingly scarce. A potential crisis is looming where available resources can no longer meet...