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 River’s aquamarine hue likely to occur elsewhere due to low flows, bringing possible risks

The extremely low flow, slow drop in the river sediments, and presence of algae on the sand and bedrock river bottom are some of the possible causes why the Mekong River has recently acquired an aquamarine color, says the Mekong River Commission. This phe

MRC ministerial council approves a drought management strategy, other policies, boosting Mekong countries’ ability to prepare for future disaster

Ministerial delegates from the Mekong River Commission (MRC) Council today at their annual gathering in Phnom Penh approved a drought management strategy for 2020-2025, allowing Cambodia, Lao PDR, Thailand and Viet Nam to prepare for and manage drought co

Media advisory: Drought, hydrological condition and other policy issues on top agenda of MRC Council meeting next week

Every year, water and environment ministers of Cambodia, Lao PDR, Thailand and Viet Nam who are members of the MRC Council convene to review and come to mutual conclusion on the management and development of water and related resources of the lower Mekong