1. Chapter 11-2 Water Use and Management

2. Global Water Use More than one billion people lack access to a clean, reliable source of water What is currently happening to the World’s population? Irrigation is the major use of water worldwide Use varies by region

4. 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.

6. 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!

7. Agricultural Water Use 67% of world water use Ex: 300 L of water to produce one ear of corn

8. Types of Irrigation Flood Furrow

9. Overhead Drip

10. Water Management Projects Water Diversion Example Owens River -

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

14. 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

15. Conservation at Home Low Flow Toilets and shower heads Water meters Xeroscaping

16. Solutions for the Future Desalination – requires lots of energy Transporting water – requires lots of energy