How is the flood risk in the Severn being managed? Flashcards
managed retreat
soft engineering
dredging
hard engineering
land use zoning
soft engineering
channel straightening
hard engineering
sand bags
soft engineering
sluice galts
hard engineering
widening the river channel
hard engineering
planting vegetation/afforestation
soft engineering
leves
hard engineering
warning systems e.g. flood line, met office, text messaging
soft engineering
dams
hard engineering
culverts
hard engineering
wing dykes
hard engineering
advantages of temporary flood defences
can be put in place and removed later on, thereby don’t permanently obstruct views
why are low earth embankments considered appropriate in low lying areas?
protect properties/agricultural land from smaller, frequent floods. They make the channel deeper and put sediment at the side, which is cheaper and doesn’t affect views
why is river channel maintenance important in reducing flood risk?
we can monitor where the risks of floods are increasing and therefore reduce the impacts for those at risk
how can resistance measures aimed at protecting individual buildings help?
reduce flood impacts in that area and limit problems. e.g. text messages can be sent to warn those at risk, so they can make preparations to reduce impacts
what are blue corridoors?
allow flood waters to extend onto areas of low-value land e.g. playing fields and parks
advantages of establishing temporary flood storage basisns
stores water. The Horsbere Broke Flood Alleviation Scheme can store up to 17,000 cubic metres of water. Also, they allow for wetland habitats to be established, benefiting biodiversity
