Introduction.- Extreme Precipitation Events, Floods and Associated Socio-economic Damages in China in Recent Decades.- Changes of Water Quality in the Yangtze River Basin.- Spatiotemporal Evaluation of Water Quality and Water Quality Incidents over Japan.- Assessment of Precipitation Amounts and Climate Extremes in Japan.- Precipitation Changes in Hokkaido and Future Water Resources in Its Main Rivers.- Estimation of Nutrient and Suspended Sediment Loads in the Ishikari River.- The Aral Sea Basin Crisis and Future Water- Climate- Food Nexus in Turkmenistan.