Iran's lakes are vanishing due to drought, falling rainfall, and unsustainable water use, with the country's 92 million people consuming more water than its renewable resources can provide. Drought-stricken regions like the Colorado River are facing similar challenges, with water scarcity threatening delivery of a sustainable supply. Climate pressures are intensifying in Central Asia, where per capita water availability has declined and agricultural productivity could decline by up to 30 percent by 2050.