case study rivers Flashcards
what are the hard engirding flood management tactics
dams and reservoirs
embankments and leaves
straightening
dredging
what are the advantage to dams and reservoirs
can produce HEP
water for irrigation
can be used for leisure fishing
what are the disangvateged to dams and resviors
expensive
displaces people when area behind the dam floods
advantage embankment and leaves
allows the river to hold more water
disadvantage of embankment and leaves
ugly
expensive
advantage of straightening
it is long lasting
effective because it moves water quickly away from urban areas
disadvantage of straingthing
expensive
takes time to build
advantage pop dredging
effective
looks quite natural
disadvantage of dredging
expensive
needs constant maintenance
what are the 4 soft engirding for flood management
afforestation
land use zoning
wet land restoration
sandbags
advantage of affirmation
absorbs water + increases interception
cheaper
looks natural
disadvantage of affortaion
takes a long time to grow
do not actually stop flooding
adavatge of land use zoning
free
reduces risks to property
disadvantage to land use zoning
doesnt not stop floods
sandbags advantage
allows people to prepare
helps protect properties
