Title: THE QUEST FOR SUSTAINABLE WATER MANAGEMENT PRACTICES IN THE U'S'
1THE QUEST FOR SUSTAINABLE WATER MANAGEMENT
PRACTICES IN THE U.S.
- Henry Vaux, Jr.
- University of California
2WATER ISSUES OF CONCERN IN THE U.S.
3Will Drinking Water Be Safe?
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5Will There Be Enough for Both Economic Growth and
the Environment?
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8Can Effective Water Policy Be Made?
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11Can Water Quality Be Maintained and Enhanced?
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13Can Our Water Systems Be Adapted to Climate
Change?
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16Will Water Supplies Be Adequate to Meet the Needs
of Competing Uses?
17- WATER AND THE WORLD FOOD SITUATION
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19Annual water requirement per person
Sufficient gt 1500 m3 Water stress 1000 - 1500
m3 Scarcity 500 - 1000 m3 Extreme scarcity lt
500 m3
20Water needed to produce 1 kg of plant material
(dry weight)
Sorghum 250 Liter Corn 350 Liter Clover 460
Liter Wheat 500 Liter Potatoes 636 Liter Cucumber
713 Liter Alfalfa 900 Liter
Rule of thumb For 1kg of bread 1m3 water is
needed
21Water availability in Israel in cubic meter per
person and year (average 1995 - 99)
Water Internal renewable 289 Fossil
groundwater 25 Import by rivers 20 Desalination
and recycling 60 Total 394
Water equivalents ( virtual water) Cereals
import 452 Non-cereals import 332 Meat and dairy
products 53 Total 837
Overall 1231
223500 3000 2500 2000 1500 1000 500 0
Israel
Import
1000 Tons
Domestic Production
2 3 4 5 6 7
Population (Million)
23Situation 2000
24Situation 2025
25Annual food export in million metric
tons(Average 1995 - 99)
Food
Producers
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