The construction of approximately 54,000 water storage, diversion, and pumping projects has ensured water security for 120 million mu of farmland, over 60 large and medium-sized cities, 340 counties (county-level cities/banners), and numerous energy bases across Shanxi, Shaanxi, Ningxia and Inner Mongolia. Despite accounting for only 2% of China’s river runoff, the Yellow River supports 12% of the national population and 15% of agricultural water demand.