Seasonal cycle of water balance in major river basins, 1979-1993 mean (1)

Calculated from river discharge and "ERA15" meteorolgical data
Mekong (Lancang) ---------- Chang Jiang (Yangtze) ---------- Huang He (Yellow)

(S is shown as relative values, whose minimum being zero.)
In tropics and mid-lat. East Asia, S takes maximum in the end of rainy season.
(In the rainy season (summer),Precipitation > Evaporation + Runoff.)