Lecture 13 protecting earth's water

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Lecture 13 protecting earth's water

  1. 1. China’s Yellow River:http://video.nytimes.com/video/2006/11/17/world/1194817103057/china-s-yellow-river-part-1.html?scp=3&sq=water%20pollution&st=cse
  2. 2. Estuary in South Carolina Need for fresh waterAmericans use 100 gallons of H2O/day Africans & Asians walk 4 miles/day for H2O
  3. 3. • • ••• ••• ••• •• •• •• http://environment.nationalgeographic.com/environment/freshwater/water-conservation-tips/
  4. 4. http://environment.nationalgeographic.com/environment/freshwater/water-footprint-calculator/
  5. 5. American’s Drinking Water (Chapter 6, “What we don’t know”):http://www.pbs.org/video/video/1114515379/subject/957383555
  6. 6. ••
  7. 7. http://environment.nationalgeographic.com/environment/freshwater/freshwater-101-interactive/
  8. 8. ~3% of Earths total water supply is fresh H2O 69% of fresh H2O locked in ice sheetsFresh Water 30% of fresh H2O concealed deep underground 1% of fresh H2O is available to humans
  9. 9. Fresh Water Surface and Atmospheric WaterTotal Water
  10. 10. Saving Lake Erie:http://video.nationalgeographic.com/video/player/environment/habitats-environment/freshwater/lake-erie.html
  11. 11. Groundwater is the supply of freshwater under Earth’s surface that isstored in underground aquifers.
  12. 12. •••
  13. 13. • • ••
  14. 14. American’s Drinking Water (Chapter 11, “Save the forest, save the water”):http://www.pbs.org/video/video/1114515379/subject/957383555
  15. 15. ••••
  16. 16. •• • • • •
  17. 17. •••
  18. 18. • http://video.nationalgeographic.com/video/player/ environment/going-green-environment/conservation-in- action/glen-canyon.html• Utah Colorado Hoover Dam Glen Canyon Dam Grand Canyon Arizona New Mexico•
  19. 19. Lake MeadThe Hoover Dam Colorad o River
  20. 20. • • •
  21. 21. • •
  22. 22. • • –
  23. 23. Old shower headsdraw 5 gallons /minuteNewer water-savingheads draw 2.5gallons / minute Water Woes in Delhi, India: http://video.nytimes.com/video/2006/09/28/world/ 1194817098866/part-1-water-woes-in-india.html? scp=1&sq=water&st=cse How to Conserve Water at Home: http://www.howdini.com/howdini-video-6697139.html Gray water is water that has already been used in bathroom sinks, showers, washing machines, and dishwashers that is collected and then reused to flush toilets, water lawn, wash the car.

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