Role:
River - The river that originates in the river is the source of the river and the place where the ocean or lake meets, it is an estuarine place. On the way of the river, sometimes small rivers or water bodies meet and flow - these are known as tahanadi. A river and its tributaries together form a river system or river system. The surface is never completely flat. As a result, the rainwater stream shows the tendency to fluctuate due to the sloping of the surface due to the multiple slope of the surface. For the formation of the river, the combination of multiple streams with adequate volume and motion, which can lead to the destruction of the inner ground and the rock, by creating the sector. The river has a source reservoir, which provides regular flow to the river. For example, the river Ganga is the glacier known as the Gangotri and the source of the Brahmaputra river, Manas Sarobar.
Direction:
The river follows the balanced and smooth movement of all the obstacles and inequalities in the direction of flow from the source. After reaching flat ground level, the amount of exposure to the surface of the river increases. As a result, the valleys and valleys flowed wide. At this time, due to the decrease of the speed, the river flows on the zigzag circle and numerous bends are created in the river. When the face of the river swirling through the curve, near the result of two erosion, the river leaves the crooked path due to the cutting of the river, and the river flows into the new straight path by creating the crystalline lake.
The speed of the river determines the size of the sediments and rigs transported by the river. If the speed of the river is blocked due to the change in the shield or any waterway or the sea or the lake, or if the river water flows through the dusk, the portion or part of the material transported by the river is deposited in the river or at the bottom of the river bank. In this way, land was formed as a result of accumulation of debris, Palgaban, Charas and Palija fan (alluvial fan) and any kind of alluvial cone. Most of the rivers in Bangladesh have reached the Bay of Bengal after reaching old age.
Source:
Almost all the major cities, towns and commercial centers of Bangladesh have been formed on the banks of rivers; For example, the city of Dhaka on the banks of the Buriganga River, the city and the port of Narayanganj on the bank of the Shitalakkhya river, the city of Mymensingh on the bank of the river Karnaphuli, on the bank of the old Brahmaputra river. Hydropower can be produced from adequate flow, speed and low-lying river systems. Hydroelectric power is being generated in the Karnafuli river at Kaptai. It is the only hydroelectric power station of Bangladesh.
Location:
The pride of Bangladesh's rivers. Here is one of the largest river systems in the world which has formed around 700 river-tributaries. The total length of river of Bangladesh is approximately 24 thousand 140 kilometers. Bangladesh's huge river system has been formed in the form of small hill rhyme, sculpted monsoon, clay puddle, precision-sighted river-river and their sub-river and branch rivers. In some places such as Patuakhali, Barisal and Sundarban, rivers are so much that the river has actually been created in that region. Rivers of Bangladesh are naturally not distributed equally throughout the country. From the northwest to the northwest of the country gradually increasing the number and size of the river in the southeast region of the south.
From the point of view of riverbase, the riverine river of Bangladesh can be divided into four major river systems or river systems:
Brahmaputra-Yamuna river system
Ganges-Padma river system
Surma-Meghna river system and
River rivers in Chittagong region.
The Brahmaputra river is 22th (2,850 km) and Ganges River 30th (2,510 km) of land in length in the riverbank of Bangladesh.