Studied by 4 people
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70% of freshwater
Used for irrigation
Aquifer
Layer of permeable rock containing groundwater
can be depleted if over-used
Furrow
dig trenches between crop rows and fill with water
cheap
33% of water is lost
Flood
flood entire field
can lead to water logging
20% of water is lost
Spray
pump groundwater up to spray nozzles
more efficient but more expensive
around 25% of water is lost
Drip
hose drips water onto plants
most expensive and efficient
5% of water is lsot
Waterlogging
too much water sits in soil —> groundwater table rises and plants can’t get enough oxygen
Salinization
salts remain in soil after water evaporates —> soil becomes too salty (toxic) for plants
Leeve
An enlarged bank built up on each side of a river
Dike
A structure built to prevent ocean waters from flooding adjacent land
Dams
Built for the primary purpose of flood control. Also built for recreation or creating scenic lakes for housing developments
Acqueducts
Brings water from pristine areas to cities, ensures cleanliness
Construction is expensive and disturbs natural habitats
