Mekong river flood forecast
GloFAS reads the Mekong at 4 places, from Chiang Saen, where it drains 192,060 km², down to Stung Treng, where it drains 638,237 km². It is read in Thailand, Laos and Cambodia. For each point, the Global Flood Awareness System gives the chance that the river will exceed the flow it normally reaches only once every 2, 5 or 20 years.
GloFAS rates the Mekong Inactive at all 4 points GloFAS reads.
GloFAS forecasts are computer model output, published for information only. They are not a flood warning: only national and regional authorities issue flood warnings for their own area. A reporting point is a place on the model's river network, which may sit a few kilometres from the town it is named after.
Every point GloFAS reads on the Mekong
Chiang Saen, Thailand · drains 192,060 km²
No chance of exceeding even its 2-year flood flow in this forecast.
GloFAS alert level: Inactive · Peak expected: as currently ongoing · Falling
near Vientiane, Laos · drains 302,159 km²
No chance of exceeding even its 2-year flood flow in this forecast.
GloFAS alert level: Inactive · Peak expected: as currently ongoing · Falling
Pakse, Laos · drains 547,629 km²
No chance of exceeding even its 2-year flood flow in this forecast.
GloFAS alert level: Inactive · Peak expected: as currently ongoing · Falling
Stung Treng, Cambodia · drains 638,237 km²
No chance of exceeding even its 2-year flood flow in this forecast.
GloFAS alert level: Inactive · Peak expected: as currently ongoing · Falling
Nothing has been reported within 100 km of this river in the last 30 days by the agencies this site follows.
What a 2-, 5- or 20-year flood flow is
It is the river flow that, at that point, is reached or exceeded on average once every 2, 5 or 20 years. A 2-year flow typically fills the channel to its banks; a 5-year or 20-year flow goes further. It measures how unusual the flow is, not what it will damage — the same flow can flood a town that has no defences and pass one that does. And "once in 20 years" is an average: two can come in a row.
Contains modified Copernicus Emergency Management Service information 2026 — the Global Flood Awareness System (GloFAS). GloFAS.