1. ESE 200 Water in the Earth System

4. Where’s all the water stored ?

5. Where’s all the water moving ?

7. Nevada e.g.

12. Most water use is agricultural

14. US trend is different

16. Imbedded water

17. Imbedded water Small coffee of the day = 50 gallons of water!

18. Small coffee of the day = 50 gallons of water! ¼ pounder patty = 500 gallons of water Imbedded water

20. Proportion of water resources Size of country represents size of water resource

21. Proportion of water use Size of country represents use of water

25. Groundwater and the Water Table 2% to 25% of rainfall

38. Groundwater: recharge rates differ by depth Millennia Centuries Decades Years Days Flow lines Confining beds Wells Water table Discharge area Unconfined aquifer Confined aquifers

47. Ground Water Contamination Water table is raised under a landfill (higher surface and permeable trash)

48. Ground Water Contamination Water table is raised under a landfill (higher surface and permeable trash) Soluble pollution moves in the same direction as the groundwater flow

53. Future needs? Is this extra water available? UN

54. Predicted water availability UN projection

55. Predicted water availability UN projection Currently, US uses ~4000 cubic meters/person/year

56. Predicted water scarcity

57. Predicted water scarcity Each group: come up with one policy (large or small) that would minimize the impact of water scarcity on one of the red areas. Simply estimate the major cost and benefit(s).

65. Virtual Water trade Doesn’t quite match, this data from 1997

66. Virtual Water trade Doesn’t quite match, this data from 1997 Yemen

67. Yemen A county with problems: semi civil-war, undemocratic, poor: 154 out of 180 Corruption Perceptions Index Transparency International 140 out of 182 Human Development Index United Nations Development Programme 119 out of 144 Global Peace Index Institute for Economics and Peace Ranking Survey Organization