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Why does the Irrawaddy River’s water volume rise during summer?
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Irrawaddy River
The Irrawaddy and Mekong river basins and their drainage networks.
The volume of the Irrawaddy River increases during the summer primarily due to the heavy monsoon rains that occur between May and October. Additionally, the river's volume is further bolstered during the summer months by the rapid melting of snow and glaciers located in the high mountains of northern Myanmar, where the river's headwaters originate.123