The Surma-Meghna River System's a river complex in South Asia, one of the three that form the Ganges Delta, the largest on earth. It rises in the Manipur Hills of northeast India as the Barak River and flows west becoming the Surma River and then flows south as the Meghna River, a total of 946 km (669 km within Bangladesh) to the Bay of Bengal. Course Barak From its source in the Manipur Hills of India, near Mao Songsang, the river's known as the Barak River. Near its source, the river receives… (More on Meghna)