words per minute
17
afinkln88
00:00
Speed
The most significant feature of the Bangladesh landscape is provided by the rivers, which have molded not only its physiography but also the way of life of the people. Rivers in Bangladesh, however, are subject to constant and sometimes rapid changes of course, which can affect the hydrology of a large region consequently, no description of Bangladesh topography retains its absolute accuracy for long. One spectacular example of such a change occurred in 1787, when the Tista River underwent exceptionally high flooding; its waters were suddenly diverted eastward, where they reinforced the Brahmaputra. The swollen Brahmaputra in turn began to cut into a minor stream, which by the early 1800s had become the river main lower course, now known as the Jamuna. A much smaller river the Old Brahmaputra now flows through the Brahmaputra former course.
Each year between June and October, the rivers overflow their banks and inundate the countryside, rising most heavily in September or October and receding quickly in November. The inundatins are both a blessing and a curse. Without them, the fertile silt deposits would not be replenished, but severe floods regularly damage crops and ruin hamlets and sometimes take a heavy toll on human and animal populations.
The rivers may be divided into five systems: The Padma and its deltaic streams, the Meghna and the Surma river system, the Jamuna and its adjoining channels, the North Bengal rivers and the rivers of the Chittagong Hill Tracts and The adjoining plains.