2 cities in Northern China, Beijing + Tianjin suffer from water scarcity due to high population density
government planned South-North water transfer project
$62 billion project will transfer 44.8 billion m3 from south to north every year
work began in 2002, Central and Eastern routes completed in 2014, Western route will be completed in 2050
Western route put on hold due to frequent earthquakes
Eastern route alone has 9km of tunnels and 23 pumping stations
Advantages:
provides clean water to over 20 cities
estimated 100 million people will benefit
industrial development can continue in north to increase country's wealth
scheme provides water for farmland irrigation
should prevent over-abstraction in the north, helping to stop land subsidence
Disadvantages:
large areas have been flooded, fragile ecosystems have been damaged
may cause water stress in the south
345,000 people has to move and received very little compensation
urban poor and rural areas have no access to the diverted water
huge tax payer investment
high population densities, combined with expanding industry and an increasing need for agricultural land in the north had led to a high demand for water
in the past, groundwater was used to help meet demand. this led to water shortages in rural areas, along with land subsidence and sandstorms, soil dried out and became unstable