The flow and volume of a river are influenced by several key factors. The roughness of the river channel significantly affects its speed, with smoother channels allowing for faster flow due to reduced friction from obstacles.
Climate of the area in which a river flows can also affect the volumeof water in its chennel.Ares with distinct wet and dry seasons , the amount of water in the chennel fluctuates according to the amoun of rainfall received during each seasons.
Permeability of rocks
high tendency for rain falling on to an area with permeable rocks to seep into the ground results in less surface runoff.
Presence of Vegetation
abundunt vegetation allows more rainwater to infiltrate the ground thereby reducing the flow of surface runoff. As a result, less surface runoff flows into the river and the voleme of water in the river is smaller.
Size of drainage Basin
The bigger the drainage area , the greater will be the amount of water in a river because when the drainage area is large , there is more surface area for rain to fall on
Subtopic
Factors Affecting the Speed Of River
Gradient of Chennel.
If the gradient is steep , the rver will flow quickly. On the other hand , if the gradient is gentle , the river will tend to flow slowly.
Wetted Perimeter
The shape of the river chennel affects the wetted perimeter , which is the length and breadth of the cennel in contact with rivers' water.The larger the perimeter the more the water comes in contact with the chennel.
Roughness of Chennel
The fristion cauesd by the obstacles reduces the speed of the river flow therefore a river with smoother chennel will have a higher speed than a river with a rougher chennel.