Flood defences
At the launch of Future flood prevention, a report calling for changes to flood management in England to tackle the rising threat posed by climate change, Neil Parish, Conservative MP for Tiverton and Honiton, said, "Some five million people in England are at risk of flooding. Winter 2015-16 broke rainfall records. Storms Desmond, Eva and Frank disrupted communities across northern parts of the UK, with Desmond alone costing the UK more than £5 billion.
Flood defences are used to prevent or control the potential negative effects of flood waters. Traditional methods of flood defence, such as the planting of vegetation to retain water and constructing channels (floodways), have been used throughout history. More modern flood defences can include:
- Dams.
- Diversion canals.
- Floodplains and groundwater replenishment.
- River defences, e.g. levees, bunds, reservoirs, weirs, and so on.
- Coastal defences, e.g. groynes, sea walls, revetments, gabions, and so on.
- Retention ponds.
- Moveable gates and barriers.
Temporary flood defences are systems that can be brought to specific problem sites to provide flood defence as required. They can then be removed until needed again, either at the same or a different location. They have no fixed foundation other than the ground on which they are based with perhaps minor pre-prepared modifications to ensure proper stability or performance of the equipment.
They might include:
Temporary barriers generally do provide the same level of protection as permanent defences and typically have failure rates of 20-30%, although this can be reduced by good advanced planning.
For more information see: Temporary flood defences.
[edit] Related articles on Designing Buildings
Featured articles and news
Or are you capping.
STEM ambassadors needed for ICE CityZen award.
Digital gaming competition for UK students aged 16 to 18.
Heritage protection in England vs Australia.
Fire doors and the Fire Door Inspection Scheme.
Three-quarters of fire doors fail inspections
UN International Day for Biological Diversity, May 22.
The role of geoparks, biospheres and world heritage sites.
BSRIA conference 2022, June 23.
Just one month to go ! Find out more here.
Restoring Broadbent’s Bath House
A new gallery for the University of Huddersfield.
Corruption in the construction industry.
What will it take to stop it ?
To celebrate world bee day 2022 !
Just one month until the changes to part L come into effect.
Not forgetting part F and the new part overheating part O.
Heat Pump demand rises by one quarter.
As energy prices jump up in cost.
With people in the UK from Ukraine.
Industry leader Steve Murray takes on role.
An abundant and versatile building material.
How overheating complicates ending gas in the UK.
600,000 heat pump installations targeted per year by 2028.
Cost planning, control and related articles on DB.
Helping prevent those unwanted outcomes.
ICE debate Public transport - post pandemic.
How has transport changed due to Covid-19 ?
Cross-ventilation in buildings. Do you have it ?
Will you need it ? after June 15 and the new Part O ?
Share your knowledge with the industry.
Create an account and write the first of many articles.
The green jobs delivery group.
CIAT commentary after the first meeting.
Liverpool's world heritage site status
Who is to blame?
Research recommends focussing on portfolio success rather than project success.
Comments