According to the Institute, a reduction of water discharge from the Chinese hydropower plants to the Mekong River Delta has overcome the first period of highest impact from February 8 to 16, 2021, right on the Tet holiday.
The Mekong River's water level in the basin of Mekong Delta is low, and saline intrusion is about to enter the period of high peak impact in late February due to the prolonged low discharge combined with high tides.
It is forecasted that from February 25 to February 28, 2021 (coinciding with the full moon period of the lunar January), salinity will continue to rise for the second time with a level of 4g/l warned to penetrate deep into the mainstream, about 48-70km from the Mekong River estuary and 75-90km from the Vam Co River and 50-55km from the Cai Lon River.
the effect of saline intrusion is less than the previous forecast on the first days of February 2021 due to unseasonal rains. However, it should be cautious with strong winds which can cause sudden salinity increase at Mekong River estuaries.
To cope with this situation, the Southern Institute of Water Resources Research recommended localities in the Mekong Delta to be proactive in taking all measures to prevent saline intrusion and drought from now on, such as: rationally operating the irrigation system; enhancing water storage capacity as soon as possible; limiting the drainage and ensuring water storage before impacts increase from upstream; strengthening salinity monitoring, regularly updating forecast reports to adjust production and water intake plans to cope with of in water sources.
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