Mekong Basin

The Mekong River is one of the world’s great river systems, flowing 4,909 km through six countries: China, Myanmar, Thailand, Lao PDR, Cambodia, and Viet Nam. The source of the river’s great productivity is its seasonal variation in water level and the range of wetland habitats inundated. The Mekong River Basin’s biodiversity is immense, even in comparison with other parts of tropical Asia. Its biodiversity is fundamental to the viability of natural resource-based rural livelihoods of a population of 60 million people living in the Lower Mekong Basin.

To learn more about the Mekong River Basin, visit the sections listed below:

PhysiographyThe Mekong River Basin consists of seven broad physiographic regions featuring diverse topography, drainage patterns, and geomorphology. Learn about the form of the Mekong River channels and how they connect. more>>

ClimateThe Mekong River Basin ranges from the glaciated highlands of the Tibetan Plateau to the hot and humid lowlands of Southeast Asia and encompasses 16 distinct WWF Ecoregions. more >>

Hydrology: The source of the Mekong’s great productivity is its seasonal variation in water level, resulting in rich and extensive wetlands. The annual flood season is especially important in the Lower Mekong Basin where it has shaped the environment and life in the region. more >>

Natural Resources: The Mekong River Basin contains a wealth of natural resources, including one of the world’s largest inland fisheries. more>>

Stories from the Mekong - These regularly updated stories provide a voice to people in the Mekong Basin and can help to bring both contemporary and traditional issues to life. more>>

Latest News

Media Release - Mekong leaders reaffirm the Mekong River Commission’s primary and unique role in sustainable development of the Mekong River Basin

As the 3rd Mekong River Commission (MRC) Summit came to a close today, the Siem Reap Declaration was adopted by the MRC member ...

China notified about discharge of Jinghong Reservoir 5 days in advance

MRC received a one-day advance ‘emergency notification’ from China – its dialogue partner – about its planned water discharge from the Jinghong Reservoir to the lower Mekong River tomorrow, aimed to ensure power grid security

Media Release - International conference recommends priorities for the lower Mekong countries to achieve sustainable development agenda

A two-day international conference convened by the Mekong River Commission (MRC) comes to a close today...