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

Mekong water levels to drop due to dam equipment testing in China

The water outflows at the Jinghong hydropower station in China will be reduced by more than 50% due to dam equipment testing from 1 – 4 January 2020, affecting river water levels in Thailand, Lao PDR and Cambodia.

MRC Secretariat, LMC Water Center ink first MOU for better upper-lower Mekong management

Data and information exchange, basin-wide monitoring, and joint assessment on Mekong water and related resources are among the main areas to benefit from a new partnership between the Mekong River Commission Secretariat (MRCS) and Lancang-Mekong Water Res

Cross-border water cooperation and joint environmental monitoring received German support

The German government today provided additional 2 million euro (approx. U$2.2 million) to the Mekong River Commission to increase cross-border water dialogue and cooperation and support efforts in monitoring transboundary environmental impacts from Mekong