Last Week’s Situations

Last week, March 30-April 5, water levels (WLs) along the lower Mekong River in Thailand’s Chiang Saen slightly increased about 0.07 metres and about 1.17 metres higher than its long-term average (LTA). The WL at Lao PDR’s Luang Prabang was increased about 0.52 metres, compared with last week and stay about 0.15 metres below its historical maximum values due to the influence of dam operations upstream and Xayaburi. WLs at the monitoring stations at Chiang Khan in Thailand increased about 0.38 metres and stay about 1.53 metres above its LTA, while at Vientiane in Lao PDR increased 1.19 metres and stay about 1.50 metres above its LTA. This high-water level is probably due to the influence of upstream dam operation of Xayaburi Dam and rainfall from upstream. For Nong Khai, water level increased 0.44 metres ans about 0.49 metres higher than its LTA. WL at Lao PDR’s Paksane increased 0.95 metres and about 0.48 metres higher than its LTA. It is considered rapid raised up and no more in critical condition. This high water level is probably due to the influence of upstream dam operation and rainfall. WLs at Nakhon Phanom to Pakse in Lao PDR and Thailand increased about 0.25 metres, during this week. WLs at these stations are above their LTAs. WLs in Cambodia’s Stung Treng, Kratie and Kompong Cham slightly increased and 0.03 metres and about 0.60 metres above their LTAs. WL at Neak Luong on the Mekong River, water level was followed the tidal effect decreased about 0.40 metres from 29 Mar to 05 Apr and about 0.18 metres lower than its LTA. From Chaktomuk to Koh Khel on the Bassac River slightly increased below their LTAs, except at Prek Kdam its water level is matched with it LTA. For the Tonle Sap Lake, it revealed that the water level of the lake is lower than its LTA (observed at Kompong Luong), expressing as a critical situation. For the tidal stations at Viet Nam’s Tan Chau and Chau Doc, due to daily tidal effects from the sea, WLs fluctuated out of the normal long-term range between maximum and minimum during this week which still considered as a very critical condition.

Next week’s Situations

Next week, from April 6-12, WLs along the lower Mekong River from Thailand’s Chiang Saen will decrease about 0.40 metres, but still stay above its LTA, while water level at Lao PDR’s Luang Prabang will continue to stay close to its Maximum level. From Thailand’s Chiang Khan to Lao PDR’s Vientiane will slightly increase, follow the last week trends from upstream and remain above their LTAs. Also, water levels at Nong Khai and Paksane will continue to stay above their LTAs. WLs from Nakhon Phanom to Pakse in Thailand and Lao PDR will slightly increase and expect to continue and stay above their LTAs. From Cambodia’s Stung Treng , Kratie and Kompong Cham water levels will slightly increase and still stay above their LTAs, while at Neak Luong on the Mekong River, Chaktomuk to Koh Khel on the Bassac River and Prekdam on the Tonle Sap River will slightly increase but will continue to stay below their LTAs. Also, the WL of TLS Lake will follow the same trend as Prekdam’s level. For the tidal stations at Viet Nam’s Tan Chau and Chau Doc will likely fluctuate above their LTAs, effected by the tidal process.

For more details on the near-real-time monitoring data for each station click here