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

Lao-Thai wetland management project ends with new community-based management plans

Government officials and community representatives from Laos’ Xe Bang Hieng and Thailand’s Nam Kam river basins cerebrated today the conclusion of a five-year bilateral wetland management project, which has improved community-based management practices in

Lao PDR Submits Notification on the Pak Lay Hydropower Project to MRC for Prior Consultation

The Mekong River Commission Secretariat has received an official notification from the Lao Government that it will undertake the formal process of prior consultation on its Pak Lay hydropower project in the Pak Lay area in the Lao PDR’s northern province

Media Release: MRC Marks Tree Day with Planting Ceremony to Promote Environmental Sustainability

To celebrate today’s Lao National Tree Planting Day and 5th June World Environment Day, Head of the Mekong River Commission Secretariat and staffers...