What is a benefit of 'hard engineering' strategies?

They can protect property, saving money in the long run

What is soft engineering?

Working with natural river processes to manage flood risk

What are the main issues with building a dam to prevent flooding?

They can flood areas behind the dam, They are extremely expensive

What is floodplain zoning?

Build low value land uses (e.g. playing fields) nearer river

What is the definition of 'lag time'?

The time between peak rainfall and peak discharge

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GCSE Rivers AQA 3

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Covers flooding, hydrographs, flood defences #geography #gcse #rivers #flooding #management

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Questions 11

Answers

1
Which engineering method involves "altering the shape of the channel to speed up river flow"?
Building damns
Embankments
Channel straightening
Land use Zoning
2
What is a benefit of 'hard engineering' strategies?
They are usually visually attractive
They are cheap
They can have a negative impact on the environment
They can protect property, saving money in the long run
3
Which of these is a 'human factor' that increases flood risk?
Precipitation
Steep valley slopes
Geology of the area
Deforestation
4
What is soft engineering?
The most expensive type of river management
The most damaging to the natural environment
Using using building materials to construct defences
Working with natural river processes to manage flood risk
5
Which hydrograph is likely to be from an area with steep slopes?
B
A
6
What are the main issues with building a dam to prevent flooding?
They can be used for hydro-electric power generation
They ca be used for recreation
They can flood areas behind the dam
They are extremely expensive
7
Which hydrograph is likely to be from an area with lots of forest?
A
B
8
Which hydrograph is likely to be from an area with lots of urbanisation?
A
B
9
Which of these is a 'physical factor' that increases flood risk?
Permeable rocks
Low rainfall
Shallow valley slopes
Impermeable rocks
10
What is floodplain zoning?
Building housing and businesses on floodplains
Preventing any construction at all on floodplains
Build low value land uses (e.g. playing fields) nearer river
Raise prices on house insurance for people on the floodplain
11
What is the definition of 'lag time'?
The peak rainfall in a storm
The amount of time flooding occurs for
The time between peak rainfall and peak discharge
The overall river discharge during a flood event

GCSE Rivers AQA 3 Flashcards | StudBud