Lecture 15 Water Resources

Lecture 15 Water Resources - Lecture 15: Water Resources...

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Lecture 15: Water Resources Lecture 15: Water Resources The Hydrologic Cycle and Earth’s Water Balance ex. 60,000 km 3 : Annual Transfer in km 3 Hydrologic Cycle Lecture 15: Water Resources What we compete for: Geography!!! Atmospheric water, 0.001% 2.59 liters (0.7 gallon) Freshwater 2.59% 0.003 liter (1/2 teaspoon) Readily available freshwater 0.003% Total water 100% 100 liters (26 gallons) Most fresh water is used for irrigation and power plants Residential water ~ half of water used in cities Lecture 15: Water Resources Lecture 15: Water Resources Ground Water Porosity Permeability Vadose Zone
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Lecture 15: Water Resources Ground water and its connection to surface water Lecture 15: Water Resources Ground water flows very slowly downhill! Map view Height of water in wells Contours of water height Flow lines are 90º to contours Lecture 15: Water Resources Flow Recharge Area Aquifer Aquitard Unconfined Confined Perched Water Table Aquifer Geometry
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Lecture 15 Water Resources - Lecture 15: Water Resources...

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