South Asia

The rivers of South Asia are vital to the region's geography, ecology, and human livelihood, with  major river systems dominating the mainland: the Irrawaddy, Salween, Chao Phraya, Mekong, and Red rivers. The Mekong River is notable as the longest river in mainland Southeast Asia, flowing over 2,700 miles through China, Myanmar, Laos, Thailand, Cambodia, and Vietnam before forming the vast Mekong Delta. These rivers support dense populations, rich biodiversity, extensive agriculture, and vibrant cultures. For example, the Irrawaddy River delta in Myanmar and the Mekong Delta in Vietnam are among the most fertile and agriculturally productive areas, while the Mekong itself sustains millions through fishing and transportation.