The Mekong River is Cambodia’s most vital waterway, flowing from Laos through the heart of the country before reaching Vietnam and the South China Sea. It sustains millions of Cambodians, providing water for agriculture, fisheries, transportation, and daily life.

The river’s annual flood cycle enriches the land, depositing nutrient-rich sediments that support Cambodia’s rice fields—the backbone of the nation’s food security. The Tonlé Sap River, a Mekong tributary, reverses flow each year, creating the unique flood pulse that nourishes the Tonlé Sap Lake, Southeast Asia’s largest freshwater fishery.

The Mekong also hosts one of the world’s most diverse aquatic ecosystems, including the critically endangered Irrawaddy dolphin and giant Mekong catfish. However, the river faces severe threats from dam construction, overfishing, pollution, and climate change. Upstream hydropower dams, particularly in China and Laos, disrupt natural water flow, sediment distribution, and fish migration, endangering both biodiversity and local livelihoods.

Phnom Penh, Cambodia’s capital, lies at the confluence of the Mekong, Tonlé Sap, and Bassac rivers, highlighting the river’s economic and cultural significance. Yet, rapid urbanization and industrial waste threaten water quality. Efforts to protect the Mekong, including sustainable fisheries and regional cooperation, are crucial. The river is not just a source of life but also a symbol of resilience for Cambodia, shaping its past, present, and future. Protecting it is essential for the nation’s survival.