esrm100s11 - Chapter 11 Water and Environment Big Question...

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Chapter 11: Water and Environment Big Question: Can We Maintain our Water Resources for Future Generations?
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Lesson 11 / ESRM 100 / University of Washington Water
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Lesson 11 / ESRM 100 / University of Washington A Brief Global Perspective Growing global water shortage is linked to our food supply. The  main process in cycle is global transfer of water.
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Lesson 11 / ESRM 100 / University of Washington Location Surface Area (km 2 ) Water Volume (km 3 ) Percentage of Total Water Estimated Average Residence Time of Water Oceans 361,000,000 1,230,000,000 97.2 Thousands of years Atmosphere 510,000,000 12,700 0.001 9 days Rivers and streams -- 1,200 0.0001 2 weeks Groundwater (shallow to depth of 0.8 km) 130,000,000 4,000,000 0.31 Hundreds to many thousands of years Lakes (fresh water) 855,000 123,000 0.01 Tens of years Ice caps and glaciers 28,200,000 28,600,000 2.15 Tens of thousands of years and longer Source: U.S. Geological Survey The World's Water  Supply (Selected Examples)
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Lesson 11 / ESRM 100 / University of Washington Water Sources
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Lesson 11 / ESRM 100 / University of Washington Surface Water and Groundwater Surface water and groundwater are parts of the same resource.
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Lesson 11 / ESRM 100 / University of Washington Desalination Turning sea water into freshwater is getting less expensive, but 
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This note was uploaded on 10/09/2009 for the course ESRM 13570 taught by Professor Rob during the Fall '09 term at University of Washington.

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esrm100s11 - Chapter 11 Water and Environment Big Question...

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