Chapter 11-2 Water Use and Management

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Chapter 11-2Water Use and Management
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Global Water Use

• More than one billion people lack access to a
  clean, reliable source of water
• What is currently happening to the Worlds
  population?
• Irrigation is the major use of water worldwide
• Use varies by region

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Residential Water Use

• US about 300 Liters or 80 gallons per day
• Contrast that with India only about 41 liters or
  about 10 gallons per day for each person
• In US about half for use inside the home.

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Industrial Water Use

• 19 of water use in the world
• Most industrial water is used to cool power
  plants
• It takes a lot of water to make things
• 1000 L to make 1 Kg of aluminum
• 500,000 L to make a car!

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Agricultural Water Use
67 of world water use Ex 300 L of water to
produce one ear of corn
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Types of Irrigation

• Flood
• Furrow

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• Overhead
• Drip

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Water Management Projects

• Water Diversion
• Example Owens River -

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• Dams and Reservoirs
• Used for water storage, diversion , hydroelectric
  power, flood control
• Examples Friant Dam

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Water Conservation

• Most Ag water is lost to evaporation and runoff.
• Can be reduced by using drip irrigation and high
  technology monitoring.
• In industry water can be recycled instead of
  just putting it into a river or the ocean

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Conservation at Home

• Low Flow Toilets and shower heads
• Water meters
• Xeroscaping

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Solutions for the Future

• Desalination requires lots of energy
• Transporting water requires lots of energy