GeographyGCSE UK river landscapes30 min★★★ difficulty

Managing flood risk: hard and soft strategies

Flood management questions are almost always evaluative. This lesson gives you the strategies and, more importantly, the arguments against each.

Lesson overview

What you'll learn in this lesson

Explain fluvial processes, landforms along the long profile, flood risk and management strategies.

Key learning points

• Hard engineering
• Soft engineering
• Judging a scheme
• Case-study discipline

This lesson at a glance

30 minutes
17 parts to scroll through
4 quick checks
Marked quiz at the end
Gentle pace: short sittings with pauses

Words to know

fluvialprocesseslandformsprofilemanagement

Scroll down — the lesson carries on below

Part 1 of 17 · Discover6%

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Part 1 of 17

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Managing flood risk: hard and soft strategies

An English teaching video on this topic from Hums Mums. Watch it, then scroll down for the lesson.

In a nutshell

Explain fluvial processes, landforms along the long profile, flood risk and management strategies.

Learning cycle

Part 2 of 17

Learning cycle 1 of 2

Part 1 · Hard engineering

A short piece of teaching, then a check to make sure it has landed.

Explore the idea

Part 3 of 17

Learn

Hard engineering

Dams and reservoirs, channel straightening, embankments and flood relief channels. They protect high-value land effectively but are expensive, alter sediment movement, can transfer risk downstream and often damage habitats.

Explore the idea

Part 4 of 17

Learn

Soft engineering

Flood warnings and preparation, floodplain zoning, afforestation and river restoration. Cheaper, more sustainable and habitat-friendly, but they rely on compliance, take time to work and do not stop a flood outright.

Quick check

Part 5 of 17

Quick check

Which is hard engineering?

Quick check

Part 6 of 17

Quick check

What is a common criticism of channel straightening?

Learning cycle

Part 7 of 17

Learning cycle 2 of 2

Part 2 · Judging a scheme

A short piece of teaching, then a check to make sure it has landed.

Reset break

Part 8 of 17

Pause

That's sitting 1 of 2 done

Stretch, get a drink, look out of the window. There is no timer and nothing is counting down — your place is saved, so you can come back in five minutes or tomorrow.

Stop here for now

Explore the idea

Part 9 of 17

Learn

Judging a scheme

Assess by cost, effectiveness, who is protected and who is not, environmental impact and long-term maintenance. A good evaluation answers 'effective for whom, and for how long?' rather than declaring one type simply better.

Explore the idea

Part 10 of 17

Learn

Case-study discipline

Have one UK flood-management scheme ready with place name, three specific features, one benefit and one cost. Named specifics are what separates level three from level two in these answers.

Quick check

Part 11 of 17

Quick check

Why is floodplain zoning considered sustainable?

Quick check

Part 12 of 17

Quick check

What lifts a 9-mark evaluation into the top level?

Explore the idea

Part 13 of 17

Worked example

Model answer: 'Assess the effectiveness of a flood management scheme' (9 marks, extract)

Embankments raise the channel capacity so that a one-in-hundred-year event can pass through the town without overtopping, which protects several hundred homes and the commercial centre — clear effectiveness for the settlement itself. However, confining the river also increases velocity downstream, transferring risk to communities without defences, and the concrete structure removes marginal habitat that supported wading birds. Set against a flood-plain zoning approach, which costs almost nothing and prevents new vulnerable development, the embankment is effective in the short term for existing property but less sustainable over decades as maintenance costs rise and discharge increases with climate change.

Challenge round

Part 14 of 17

Game · Sort it

Which of these are true?

Drag each card into the right column. Tap a card first if dragging is fiddly.

True

Not true

Challenge round

Part 15 of 17

Game · Fill the gaps

Finish the sentences

Choose the word that belongs in each gap.

Have one UK flood-____ scheme ready with place name, three specific features, one benefit and one cost.

Mastery quiz

Part 16 of 17

Marked quiz

End of lesson quiz: Managing flood risk: hard and soft strategies

4 questions, marked with the reasoning shown. No timer.

1. Which is hard engineering?
2. What is a common criticism of channel straightening?
3. Why is floodplain zoning considered sustainable?
4. What lifts a 9-mark evaluation into the top level?

Lesson round-up

Part 17 of 17

Lesson round-up

Ready when you are

Quiz score

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Points this lesson

Best run

0 in a row

Luna: 0 out of 4 on the practice checks. Only if you feel up to it — one more?

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Do the work

Your written work for this lesson

This is the part you'd do in your book at school. Pick the pieces below, write here or on paper, and photograph anything you draw or work out.

Case study

Flooding on the River Calder

The town of Harbrook sits where a steep valley opens onto a flat floodplain. In December 2015, 120 mm of rain fell in 36 hours onto ground that was already saturated. The river rose 2.4 m in five hours, and 380 homes and 54 businesses flooded. Two roads and the railway closed for eleven days.

Geographers pointed to physical causes — steep slopes, impermeable rock, heavy rainfall — and human causes: moorland drained upstream, new housing built on the floodplain, and drains designed for smaller storms.

Since then the town has planted 40 hectares of woodland upstream, built leaky dams in small streams, and raised flood walls to 1.8 m. In the storm of 2020 the peak river level was 0.3 m lower and 40 homes flooded, not 380.

Written for Good Learning Co.

Reading questions

List two physical and two human causes of the 2015 flood.
Explain how planting woodland upstream lowers the river's peak level.
Using the figures, judge how successful the scheme has been. Quote data in your answer.

Case study notes
Writing
Write the place, the facts and the figures from this lesson so you can revise them later.
Half a page
Explain answer
Writing
Answer in full sentences, giving causes and effects. Use one figure or place name as evidence.
8–10 sentences
Map or sketch
Diagram
Draw the map, cross-section or field sketch with a key, title and labels, then photograph it.
1 map with a key
Data work
Working out
Plot your figures as a graph on paper and write one sentence about the pattern.
1 graph + 1 sentence

Write your answer, notes or working here

Saved as you type.

Photos of paper work, diagrams or working outHow many minutes did the written work take?

Part 1 of 17 · Watch & discover

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