1. WATER RESOURCES

2. Little Water Available Most water is oceans/saltwater - ~97% ~3% freshwater Only 0.024% usable Liquid, accessible groundwater, surface water Rest is frozen in ice caps or glaciers, too deep to extract, or polluted http://www.you tube.com/watc h?v=HW5eBfZ hE4M

3. What do we use water for? AGRICULTURE INDUSTRY DOMESTIC 25 bathtubs full 37 gallons 2,400 bathtubs full 40 gallons per person per day

4. Who uses the most?

5. Water Usage 70% Agriculture/Irrigation Most wasted – evaporation, seeps before plants absorb 20% Industry Energy production, manufacturing, etc. 10% Domestic Cities and residences Largest domestic use – toilets

6. Web Resources Water used to make different products: http://environment.nationalgeographic.com/environment/freshwater/embedded-water/ http://environment.nationalgeographic.com/environment/freshwater/embedded-water/ Global Water Footprint: http://environment.nationalgeographic.com/environment/freshwater/global-water-footprint/ http://environment.nationalgeographic.com/environment/freshwater/global-water-footprint/ Water Use game: http://kids.nationalgeographic.com/kids/games/puzzlesquizzes/water-wiz/ http://kids.nationalgeographic.com/kids/games/puzzlesquizzes/water-wiz/ Calculating Personal Water Footprint: http://environment.nationalgeographic.com/environment/freshwater/water-footprint-calculator/ http://environment.nationalgeographic.com/environment/freshwater/water-footprint-calculator/ Water Crisis News: http://news.nationalgeographic.com/news/archives/water-crisis/ http://news.nationalgeographic.com/news/archives/water-crisis/ Water conservation: http://video.nationalgeographic.com/video/environment/going-green- environment/green-home-makeover/conserve-water-greenguide/ http://video.nationalgeographic.com/video/environment/going-green- environment/green-home-makeover/conserve-water-greenguide/

7. Water Issues Articles 1. Make an appointment with 4 different people (3o’clock, 6, 9, 12) 2. Read your article 3. Summarize the main points/facts in your lab notebook 4. Meet, share your summary and write down theirs

8. WHAT MAIN WATER ISSUES DO WE FACE?

9. HOW IS WATER RECYCLED? HOW IS WATER RECYCLED?

10. WATER CYCLE

12. WATER ( Hydrologic ) CYCLE It is a “redistribution” of water. A drought somewhere = more water somewhere else

13. Transpiration

15. Can you name the processes? http://www.teachersdomain.org/resource/ess05. sci.ess.watcyc.watercycle/

16. Surface water and groundwater are connected Most groundwater eventually flows into rivers, lakes, estuaries Disruptions to groundwater, affects surface water Overdraw groundwater  dry out groundwater  surface water drains into aquifer, drying out lakes, rivers, wetlands, etc.

17. Why is water an issue? Population & water resources –don’t always match Canada vs.China 0.5% world’s pop’n20% pop’n 20% world’s freshwater7% freshwater Precipitation – key distributor (droughts and floods) Water Wars – who owns the water? “Whiskey is for drinking. Water is for fighting over. - Mark Twain

18. Currently there are ~30 armed conflicts over water http://www.youtube.com/watch?v=Ikb4WG8UJRw Southwest: http://www.youtube.com/watch?v=vy4WmRBUmW0&feature=related Blue Gold Movie: http://www.bluegold-worldwaterwars.com/press_kit/BlueGoldTrailer_720.mp4

19. Water stressors Freshwater withdrawal Withdrawal increased 7x 2/3 of annual surface runoff in rivers and streams is lost by seasonal floods Groundwater withdrawal Ogallala aquifer Increased waste Farmers and cities competing for water less access to water, yet feeding 82M more people every year

20. Freshwater in the U.S. We have plenty of freshwater, BUT not evenly distributed. East – ample rain, West and Southwest – little

21. Rain Shadow

22. Fig. 13-6, p. 319