The Karnaphuli River is the largest and most important river in the Chittagong division, situated in southeastern Bangladesh. Stretching approximately 180 kilometers, it originates in the Lushai Hills of Mizoram, India, and flows through the Chittagong Hill Tracts and the Chittagong city before emptying into the Bay of Bengal. Serving as a vital lifeline for the inhabitants, it facilitates irrigation, navigation, and hydroelectric power. The river's estuary is home to the Chittagong Port, which is the busiest seaport in Bangladesh, playing a crucial role in the nation's economy. The surrounding areas of the river are noted for their picturesque landscapes, including lush greenery and hills. The Karnaphuli Dam, situated upstream, is a significant source of hydroelectric power and aids in flood control. Over the years, the river has been facing environmental challenges such as pollution and siltation, which are being addressed by various conservation efforts to preserve its ecological significance.