Key Messages
Key messages for this weekly report are presented below.
Rainfall monitoring and forecast
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In the period of 03 – 09 September 2024, light to very heavy rainfall has been observed over the LMB. Especially, heavy to very heavy rain occurred in some areas in Chiang Saen, Chiang Saen, Vang Vieng, Moung Namtha, Phongsaly, Xiengkhouang, Paksane,
Thakhek, Ban Tha Kok Daeng. -
From 10 – 16 September 2024, moderate to heavy rainfall is expected to occur in the LMB. Moreover, isolated heavy rainfall is expected to occur in the upper and eastern parts of the LMB during 11-13 September 2024.
Water level monitoring and forecast
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At 22 key monitoring stations along the Mekong mainstream from 03 – 09 September 2024, the water levels at other stations are in normal conditions, which do not reach alarm and flood levels. The total accumulated volume of the reverse flow to Tonle Sap Lake remains 18.17 Km3 .
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In the period of 10 – 14 September 2024, water levels at upstream stations along Mekong mainstream from are likely expected to rise from Chiang Saen to Kampong Cham. From Phnom Penh Port station downward, the water levels are expected to be stable. The water levels at all stations are expected to be in normal conditions, which do not reach alarm and flood levels.
Drought condition and forecast
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From 03 - 09 September 2024, the LMB was experiencing moderate and severe droughts in the central part covering mainly Lao PDR and Cambodia. Severe drought was taking place in Khammouan and Savanakhet (Lao PDR); Siem Reap, Kampong Chhnang, Kampong Chhnang, and Preah Vihear (Cambodia). The observed drought was caused primarily by meteorological indicator.
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From 10 - 16 September: the Lower Mekong Basin is likely at normal conditions. No drought is forecasted for the whole region.