What process occurs in the lower course of a river?

Lower course – the final course of the river is where the land is a lot flatter. The river channel is at its widest and deepest as it flows towards its mouth. Deposition is the main process in this part of the river, which creates large floodplains and deltas .

What are the 3 main processes occurring along the course of a river?

River Processes: erosion, transportation and deposition & the Hjulström Curve. There are three main types of processes that occur in a river. These are erosion, transportation and deposition. All three depend on the amount of energy there is in a river.

What is the lower course of river called?

‘Lower course’ of the river includes floodplains and deltas. Lower course of river includes several land forms namely floodplain, Levee, estuary, and deltas. Rivers got flooded on a regular period of time.

What are the 4 processes of a river?

The four main types of river erosion are abrasion, attrition, hydraulic action and solution. Abrasion is the process of sediments wearing down the bedrock and the banks.

What is the main work of river in the lower stage?

The Lower Stage The main work of the river in this stage is the deposition. When the main river splits into many small rivers, they are called as the distributaries. The place where the river ends is called mouth of the river.

What is river process?

Three River Channel Processes are– 1) Erosion ((The wearing away of the land) 2) Transportation (The movement of eroded material) 3) Deposition (The laying down of eroded material)

What are the erosional processes?

Erosional processes along coastlines include: (1) the direct effects of hydraulic action, wedging, and cavitation by waves; (2) abrasion (corrasion), using sand, gravel, and larger rock fragments as tools; (3) attrition of the rock particles themselves during this abrasive action; (4) salt weathering or fretting; (5) …

What is the start of a river called?

source
The place where a river begins is called its source. River sources are also called headwaters. Rivers often get their water from many tributaries, or smaller streams, that join together. The tributary that started the farthest distance from the river’s end would be considered the source, or headwaters.

What is the main function of a river in its lower course is?

Answer: The volume of water in a river is at its greatest in lower course. This is due to the contribution of water from tributaries.

What are 2 types of river erosion?

Types of erosion

• Hydraulic action – This is the sheer power of the water as it smashes against the river banks.
• Abrasion – When pebbles grind along the river bank and bed in a sand-papering effect.
• Attrition – When rocks that the river is carrying knock against each other.

What are the 4 types of deposition?

Types of depositional environments

• Alluvial – type of Fluvial deposit.
• Aeolian – Processes due to wind activity.
• Fluvial – processes due to moving water, mainly streams.
• Lacustrine – processes due to moving water, mainly lakes.

What are the important phases of river work?

Stages of the River

• The course of a river includes the upper stage, the middle stage, and the final stage.
• The upper stage of a river is also called the youthful stage or mountain stage.
• The place where two rivers join is called as the confluence.
• Middle stage is the matured stage of a river.

What happens when a river reaches its lower course?

By the time a river reaches the lower stretches of its long profile – and gets closer to base level (usually sea level, though possibly a lake) – the channel can experience an increase in deposition. This can happen for a combination of reasons:

What are the three courses of a river?

Any river, anywhere in the world can be split into three sections. Section 1 is the upper course (think high up in the mountains). Section 2 is the middle course (where it comes down into the lowlands). Section 3 is the lower course (where it is at its widest and most powerful and enters the sea).

Which is an influencing factor in a river’s course?

A key influencing factor is the long river profile, illustrated in the diagram to the right. The long profile is a graph of a river that marks the change in altitude from the upper course to its lower course. All along its course, the river uses energy to carry out erosion, transport and deposition of sediment.

How are river processes related to the long profile?

River processes are related to the long profile because every river is trying to achieve a smooth, concave, long profile. It is in this profile that the river is balanced. Where this is not the case, the river will be working to smooth out its long profile by erosion, transport or deposition, in order establish the balance.