Dam building on shared rivers has emerged as the leading source of water disputes and tensions in Asia, the world's driest continent whose freshwater availability is less than half the global annual average of 6,380 cubic meters per inhabitant. Dam-building activities by China and Central, South and Southeast Asian states have roiled inter-riparian relations, intensifying water discord and impeding broader regional cooperation and integration.

Dam building has largely petered out in the West, but continues in full swing in Asia.

According to international projections, the total number of dams in the developed countries in the next one decade is likely to remain about the same, while much of the dam building in the developing world, in terms of aggregate storage-capacity buildup, is expected to be concentrated in just one country — China. Indeed, about four-fifths of all dams currently under construction in Asia are just in China, which already boasts slightly more than half of all existing large dams in the world.