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Hydrological Regime of the Mekong River. Hydrological Regime of the Mekong basin depends on climatic conditions of the wet and dry seasons. High water period from Jul. to Nov.; Low flow period from Feb. – April (see following graph KRATIE).
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Hydrological Regime of the Mekong River • Hydrological Regime of the Mekong basin depends on climatic conditions of the wet and dry seasons. • High water period from Jul. to Nov.; Low flow period from Feb. – April (see following graph KRATIE). • High water period depends on the position within the basin. Upper basin earlier – lower basin later. • Flood season in mainstream and tributaries, from June-July to Nov-Dec accounts for 85-90% of total annual water volume. • Peak month of Sept accounts for 20-30% of annual flow.
20% Contribution to Mekong flows 35% 16% Climate • Monsoonal climate • dry season November to May • wet season June to October • Different climatic condition (rainfall) cause area specific contributions of water to the Mekong flow
The % contribution of flow from China to average monthly flow at … The % contribution of flow from China to average monthly flow at … % • Flow from China dominates the dry season hydrology of the Lower Mekong • Flood season flows mostly originate within Laos and the lower basin References and Sources for Further Reading: MRC, 2006: BDP Training Material.