Ccw presentation richter

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Choose Clean Water Conference June 3, 2014 Staunton, Virginia

Transcript of Ccw presentation richter

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Choose Clean Water Conference

June 3, 2014Staunton, Virginia

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Colorado River

Hoover Dam

All-American Canal and Colorado River Aqueduct

Central Arizona Project

Flaming Gorge and Glen Canyon Dams

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Photo: Jonathan Waterman

Colorado River Delta, Mexico

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Who is experiencing water shortages, and where?

What happens to people and other species when water shortages occur?

Why do communities and countries run short of water?

Is there some way to avoid shortages, or overcome them once afflicted?

Chasing Water

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Global Water Scarcity

~25% of water sources are heavily depleted

Source: “Tapped Out: How Will Cities Secure Their Water Future? Richter and others, Water Policy Journal, 2013

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Increasing Water Scarcity

Low Moderate Significant Severe

Minimal impacts

Ecological impacts appear

Impacts to ecosystem services appear

Serious economic impacts

Full natural

availability

20% depletion of renewable annual supply

Water all gone

50% depletion

80% depletion

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Two Fundamental Problems

•Governments are reluctant to set limits on water extraction

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Source: US Geological Survey

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Two Fundamental Problems

•Governments are reluctant to set limits on Governments are reluctant to set limits on water extractionwater extraction

•Remedies are directed at increasing supply rather than reducing demand

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Six Ways to Fix a Water Shortage

• Desalination• Water reuse• Water importation• Water storage• Watershed management• Water conservation

Co

st

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We Live in a Water-Illiterate World

Nearly 80% of Americans have no idea where their water comes from

Far fewer know what a “watershed” or “aquifer” is

Most water professionals do not understand the difference between “water withdrawal” and

“consumptive use” (do you?)

If we have any hope of empowering citizens to play a more active role in water planning and decision-

making, we face a huge educational challenge

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UVA video

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Available from Island Press

June 2014