1. How can river flow be
managed – ‘soft engineering’

2. Soft River Engineering
• In the long term these strategies are
more sustainable.
• These strategies try to work with the
constraints of the natural river system
and involves avoiding building on areas
likely to flood, warning people of an
impending flood and planting trees to
increase lag times.
How can river flow be managed – ‘soft engineering’

3. 1. Flood Warning
• Current flood warnings here
How can river flow be managed – ‘soft engineering’

4. Flood warnings on the 27.11.12!
How can river flow be managed – ‘soft engineering’

5. River management – ‘hard’ and ‘soft’ engineering

6. 1. Flood Warning
Costs Benefits
How can river flow be managed – ‘soft engineering’

7. 2. Floodplain Zoning

8. Can you spot any
evidence of flood plain
zoning here?

9. Can you spot any
evidence of flood plain
zoning here?

10. • What evidence is there in this image of
land use zoning? (4)

11. 2. Flood plain zoning
Costs Benefits
How can river flow be managed – ‘soft engineering’

12. 3. Government advice and
Preparation
• Environment Agency in UK gives advice –
see here
How can river flow be managed – ‘soft engineering’

13. 3. Government advice and
Preparation
Costs Benefits
How can river flow be managed – ‘soft engineering’

14. 4. Do nothing
• This deliberate decision means that
governments don’t do anything.
• In LEDC’s this is often as a result of
lack of resources.
• In MEDC’s governments may do this and
save money to then help deal with the
consequences of floods.
How can river flow be managed – ‘soft engineering’

15. 4. Do nothing
Costs Benefits
How can river flow be managed – ‘soft engineering’

16. Soft
engineering?

17. HOMEWORK
• Complete the past question.(Jun ’11)