The Jamuna River (Bengali: যমুনা Jomuna) is one of the three main rivers of Bangladesh. It is the main distributary channel of the Brahmaputra River as it flows from India to Bangladesh. The Jamuna flows south and joins the Padma River (Pôdda), near Goalundo Ghat, before meeting the Meghna River near Chandpur. It then flows into the Bay of Bengal as the Meghna River.
The Brahmaputra-Jamuna is a classic example of a braided river and is highly susceptible to channel migration and avulsion.
The Jamuna is a braided stream characterised by a network of interlacing channels with numerous sandbars enclosed in between them. The sandbars, known in the Bengali as chars do not, however, occupy a permanent position. The river deposits them in one year very often to destroy and redeposit them in the next rainy season. The process of deposition erosion and redeposition has been going on continuously making it difficult to precisely demarcate the boundary between the district of Pabna on one side and the district of Mymensingh Tangail and Dhaka on the other. Breaking of a char or the emergence of a new one is also a cause of much violence and litigation.