Human activities can lead to changes in river landscapes which affect people and the environment — Edexcel GCSE Geography A
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Human activities can lead to changes in river landscapes which affect people and the environment explained
Human activities can lead to changes in river landscapes which affect people and the environment covers 2 specification points, including A.
Read the full explanation
How human activities and changes in land… and B. Advantages and disadvantages of different…. Open a point below for its explanation and revision guidance.
a. How human activities and changes in land use (urbanisation, agriculture and industry) have affected river processes that impact on river landscapes; the physical and human causes and effects of river flooding.
Link land-use change to river processes and landscapes, then to flooding. Urbanisation replaces permeable ground with roads and roofs, so runoff rises and peak discharge comes sooner. Agriculture can clear vegetation and compact soil, and field drainage moves water into channels faster. Industry may discharge waste, straighten channels or alter banks, changing erosion, transport and deposition. Build chains such as: impermeable surface → faster runoff → higher peak discharge → bank overtopping. Causes are physical (intense or prolonged rainfall, steep relief, saturated ground) and human (land-use change, building on floodplains). Effects include property damage, risk to life, disruption and sediment deposited on floodplains.
b. Advantages and disadvantages of different defences used on UK rivers (hard engineering– dams, reservoirs and channelisation and soft engineering– flood plain zoning and washlands) and how they can lead to change in river landscapes.
Weigh advantages against disadvantages for each defence used on UK rivers. Hard engineering includes dams and reservoirs, which store water and regulate flow but can trap sediment and change downstream discharge. Channelisation straightens and deepens channels to move water away quickly, reducing local flooding but often increasing downstream risk. Soft engineering includes flood plain zoning, which restricts building on flood-prone land, and washlands, which hold floodwater temporarily. Soft options tend to be less intrusive but may offer less certain protection. Tie each to landscape change: reservoirs create lake landscapes, channelisation alters bed and bank features, and washlands preserve floodplain environments.
Your focus
- Explain how urbanisation, agriculture and industry change river processes.
- Classify flood causes as physical or human, giving a correct example for each.
- Describe effects of flooding on people and the environment using specific examples.
Show all 6 objectives
- Classify named UK flood defences as hard or soft engineering.
- Explain one advantage and one disadvantage of each defence named in the specification.
- Describe how a named defence alters a river landscape.
Human activities can lead to changes in river landscapes which affect people and the environment exam tips
Marking Points
- Explains that urbanisation increases surface runoff by replacing permeable ground with impermeable surfaces.
- Links agricultural vegetation removal and field drainage to faster water delivery into channels.
- Identifies an industrial example, such as waste discharge or channel alteration, and its effect on erosion, transport or deposition.
- Distinguishes physical causes of flooding, such as intense rainfall, from human causes, such as building on floodplains.
- Describes effects of flooding on people and the environment, such as property damage or floodplain sediment deposition.
- Explains an advantage and a disadvantage of dams or reservoirs, such as flood storage set against sediment trapping.
- Assesses channelisation by stating its benefit for rapid water removal and its downstream flood risk.
- Identifies flood plain zoning or washlands as soft engineering and explains how each reduces flood damage.
- Links a named defence to a specific change in river landscape, such as a reservoir lake, an altered channel or a preserved floodplain.
- Compares hard and soft options using reasons such as cost, environmental impact or certainty of protection.
Examiner Tips
- 💡Read every option before selecting, because distractors often name a real process attached to the wrong cause or effect.
- 💡Follow one process chain from land-use change to flood outcome when you check an option.
- 💡Confirm whether each cause is physical or human before you accept the option.
- 💡Check whether each option names a hard or soft defence before deciding it fits the question.
- 💡Eliminate options that give only advantages or only disadvantages when the question asks for both.
- 💡Match each defence to one landscape consequence you can explain in a single sentence.
Common Mistakes
- Treats every river change as a flood; keep the link to river processes, landscapes and flood outcomes explicit.
- Lists land uses without explaining the process they change; state how each affects infiltration, runoff, erosion or deposition.
- Places land-use change in the physical causes list; classify it as a human cause and keep rainfall and relief as physical causes.
- Lists defences without giving any advantage or disadvantage; state one of each for every defence named.
- Labels washlands or flood plain zoning as hard engineering; classify them as soft engineering because they work with natural floodplains.
- Claims channelisation has no downside; explain that it can increase downstream flood risk and reduce habitat diversity.