Careful choice and detailed study of a suitable drainage basin, eg the Ganges in Bangladesh, means you can use it to cover the whole spectrum of ideas relating to water on the land. Proper revision planning like this can make you more accurate and efficient. A drainage basin is an area of land drained by a river. This is what one looks like. Make a note of the key terms.
Water also moves vertically through the system.
Hydrographs And Flooding These two hydrographs are for two different drainage basins. They show the level of discharge increasing after a storm. The two drainage basins are clearly very different. This simple diagram shows you all the causes of floods in Bangladesh. Complete these sentences.