Water Resources
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Transcript of Water Resources
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Water Resources
Chapter 15APES
Ms. Miller
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Hydrological Poverty: lack of freshwater available for use which leads to harsh human, environmental and economical consequences
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Green Surrounded by Desert….Why Bother??
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Importance of Water (Science and Economics)Keeps us alive…….60% of our bodies is waterCan only survive without water for a few days
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Water is one of our most poorly managed resourcesGlobal Health Issues: unsafe drinking
water and lack of sanitation are biggest cause of illness worldwide.
>2 million people die from waterborne diseases: diarrhea, typhoid fever, and hepatitis …even malaria is linked directly to water.
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Children’s Issue: it is essential for healthy development
a child dies every 8 seconds due to waterborne diseases (diarrhea is the number
one cause of death in children in many African countries)
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Women’s Issue: poor women and girls are often reponsible for finding and carrying daily water supplies.
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National and Global Security Issue: tensions are increasing over shared/limited use of water resources in the Middle East and other areas of the world.
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All of our continents have concerns about water use…even Brookfield wants water from Lake Michigan.
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Environmental Issue: excessive withdrawal and pollution leads to…..
Disappearing Species
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Lower water tables:
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Declining fish populations:
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Altered river flowsShrinking lakesLoss of wetlands
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Declining water quality
The earth’s most abundant resource, and still we have trouble finding adequate clean drinking water for nearly 1 billion people worldwide.
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Only 0.024% of the earth’s water is available to use as liquid fresh water.
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The Hydrologic Cycle helps keep fresh water recycling
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Reliable runoff: surface runoff we can count on as a source of freshwater from year to year. Currently use greater than 50% of it but greater needs will push that to 70-90% use by 2025.
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Withdrawal: amount of freshwater we remove from a lake, river or aquifer for any purpose.
Consumptive use: use that does not return water to its original source. Approximately 70% of the water used falls into this category.
Nonconsumptive use: water is not removed, or is returned to an aquifer or surface body of water.
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70% of water withdrawn from lakes, rivers and aquifers is used for irrigation….
Supports 1/5th of the world’s croplandsProduces 40% of the worlds food
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Top Three “Users” of water
#1 Irrigation (70%)#2 Industry (20%)#3 Residences (10%)
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17 water hotspots have been identified in the Western U.S. Which leads to more
intense conflict for fresh water resources
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Governments vs. Private Corporations???most are currently owned and managed by
governmentsSome governments are selling their water to
private companies like: Vivendi, Suez, and RWE
Build our developments with stakeholders Innovate to meet environmental needs
Conserve resources and promote make employees sustainable the circular economy development actors
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