rivers- Mississippi river1 Flashcards
dams
trap & store water
generate electricity
water evaporated
slit trapped
embankments
raised banks = make rivers cross section larger
hold more water
expensive
effective
straightening & deepening
water move more faster through the flood prone area
cause flooding further downstream
storage areas
warer pumped out of the rivers and stored in temporary.
effective
much space
washlands
sections of the flood prone areas, allowed to flood.
provide a habitat for wildlife.
allowed to flood naturally
take up space
land use zoning
prevent development in areas most to prone to flooding.
countries may ignore and build
afforestation
planting of trees in a river catchment to increase interception and also uptake of water through soil.
takes time
warning systems
people given warning to move out of the area.
not get enough warning- flash floods