South-to-North Water Diversion Project in Nanyang

South-to-North Water Diversion Nanyang China Tanzhai Village Middle Route South-to-North Water Diversion Project Henan province 10th anniversary East-Central Route water transfer 72.9 billion cubic meters water source large cities medium-sized cities 176 million people Costfoto NurPhoto water management infrastructure water conservation urban water supply water distribution hydrology environmental engineering water resources interbasin transfer sustainable development water security public utilities urban planning regional development water infrastructure anniversary celebration.