and not a drop to drink water, water, everywhere
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And not a drop to drink
Water, Water, Everywhere
Distribution
http://www.bbc.co.uk/news/science-environment-11435522
BBC Water Scarcity MapPublished September 29th, 2010
Distribution
AAAS 2000
Water Budget
Demo
What do you rely on the available freshwater for?
How would your list differ if you were in a LEDC?
Water Budget
Distribution of the World’s Glaciers
Access & Excess
1.1 Billion people live without clean drinking water 2.6 billion people lack adequate sanitation 1.8 million people die every year from diarrheal diseases
3900 children die everyday from waterborne diseases Daily per capita use of water in residential areas:
-350 litres in North America and Japan-200 litres in Europe-20 litres in Sub-saharan Africa (or less)
Over 260 river basins are shared by two or more countries, mostly without adequate legal or institutional arranegments
Quantity of water needed to produce 1 kg of:-wheat: 1,000 L-rice: 1,400 L- beef: 13,000 L
Personal Choices
1 kg of beef requires 13,000 L of water
200 L of water represents the daily per capita use of a person in Europe.
13,000 L /200 L/day = 65 days
Therefore it would take 65 days of the water requirements for a European to produce 1 kg of beef.
That’s a lot of water.
You’re telling me.
Conflict – Colorado River
Originates in the Rocky Mountains Draining into the Gulf of California
Dams provide flood control, recreation, and hydroelectric power 30 million people use the water
Water rights determined long ago Las Vegas & Nevada are thirsty!
Conflict – Colorado River
Conflict – Colorado River
7 states share the Colorado river
Droughts, overuse, and climate change are threatening supplies
Colorado is little more than a trickle before entering the Gulf of Mexico.
Conflict – Colorado River
Las Vegas, Nevada, needs more water than it is allotted
Other states will let Las Vegas drill for underground water
Drilling threatens the area’s ecology and people
Headed for Nevada’s Supreme Court
Conflict – Israel & Palestine
http://youtu.be/hH4OKho3550
http://www.waterfootprint.org/WFP_files/Img/IsraelWaterMap.jpg
Explain the water “system” on Earth with respect to storages and flows.
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