Floodplain
A floodplain is land adjacent to a watercourse over which water flows or would flow in times of flood, if defences were not in place.
The flood zone area classification system devised by the Environment Agency refers to:
- Flood Zone 1: Land outside the floodplain. There is little or no risk of flooding in this zone.
- Flood Zone 2: The area of the floodplain where there is a low to medium flood risk.
- Flood Zone 3: The area of the floodplain where there is a high risk of flooding.
Ref The HS2 London-West Midlands Environmental Statement, Department for Transport, November 2013.
NB Culvert, screen and outfall manual, (CIRIA C786) published by CIRIA in 2019, defines a floodplain as: ‘Land on either side of a river that is below the highest defined flood level.’
[edit] Related articles on Designing Buildings Wiki.
- Applying flood resilience technologies GG 84.
- Building flood resilience.
- Catchment flood management plans.
- Coastal defences.
- Environment Agency.
- Flood.
- Flood and Water Management Act.
- Flood defences.
- Flood insurance.
- Flood risk.
- Flood risk assessment.
- Flood risk management plans.
- Future flood prevention.
- Pitt Review.
- River engineering.
- Sustainable urban drainage systems.
- Thames barrier.
- Water engineering.
Featured articles and news
ECA Engineering Services Survey
Results show guarded optimism and payment concerns.
Noteworthy navigable aqueducts.
Technology is making remote work a reality.
Carefully placed structures add drama to pastoral vistas.
Making mission impossible...possible!
Report provides actions required by 2030 to achieve a zero carbon economy.
Flat white isn't just for coffee
What type of cool roof is most suitable?
Active Travel programme prioritises cyclists and pedestrians.
CIAT issues caution for use of new standard.
ICE examines Scotland's infrastructure
Industry leaders discuss climate change, the economy and other influences.
The building manager is key to operations.
The impact Scotland’s dynamic coast has on the historic environment.
Conservation, People and Places
IHBC announces role in new APPG.