🌍 Geography · Topic 21 of 102

The River Course

A river changes from source to mouth, with steep valleys and erosion in the upper course and wide floodplains and deposition in the lower course.

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A river changes from source to mouth, with steep valleys and erosion in the upper course and wide floodplains and deposition in the lower course.

  • Upper course: V-shaped valley
  • Middle course: meanders
  • Lower course: wide floodplain and delta

🧠 Quick quiz

Three questions. Score 2 or more to complete the topic.

What is The River Course?

Within Geography, which covers maps, landforms, weather, climate, population and settlements: understand how our planet and people connect, this topic explains The River Course. Geography explains how places, people and natural processes connect, so each topic here combines a clear definition with a visual model.

Check that you can explain The River Course in your own words and give one example from everyday life. If you can do that, you have understood the core idea.

Understanding The River Course helps you explain patterns on maps and in the news, and make reasoned decisions about places and environments.

The River Course in detail

A river changes from source to mouth. In the upper course, the channel is narrow and shallow with large angular boulders, a steep gradient and high erosion. In the middle course, the river widens and deepens, with more water and smaller stones, and begins to meander.

In the lower course, the river is wide and deep with a flat gradient, fine silt and clay, and large meanders, and it deposits more than it erodes. Velocity generally increases downstream because the channel is smoother and more efficient, even though the slope is lower. The long profile shows the change in gradient, and the cross profile shows the shape of the valley.

How the interactive helps you understand The River Course

Click a step, or use the Previous and Next buttons, to move through the sequence one stage at a time. Auto-play moves on for you.

Before you change anything, predict the result. Then change one value at a time and check whether your prediction was right. This is a quick way to build a correct mental model of The River Course.

Real-life uses and examples

Common mistakes to avoid

Frequently asked questions about The River Course

What is The River Course?

A river changes from source to mouth, with steep valleys and erosion in the upper course and wide floodplains and deposition in the lower course.

What are the most important points about The River Course?

The main points are: Upper course: V-shaped valley; Middle course: meanders; Lower course: wide floodplain and delta.

Why is The River Course useful?

Understanding The River Course helps you explain patterns on maps and in the news, and make reasoned decisions about places and environments.

How can I practise The River Course?

Open the interactive at the top of this page and change the controls one at a time. Predict the result before each change, then take the three-question quiz. A score of two or more marks the topic as complete on this device.

Which topics are related to The River Course?

Related topics in Geography include Coastal Erosion, Glaciers and Ice Ages, Measuring Weather.

← PreviousRiver Processes and LandformsNext →Drainage Basins

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