Chapter 9 Water Resources

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Chapter 9 Water Resources
Geosystems 5e An Introduction to Physical
Geography

Robert W. Christopherson Charlie Thomsen
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(No Transcript)
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Hydrologic Cycle Model
Figure 9.1
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Atmosphere
Oceans
Land
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Surface Water  
Figure 9.3
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Soil-Water-Budget Concept

• The Soil-Water Balance Equation  
• Sample Water Budgets  
• Water Budget and Water Resources  

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The Soil-Water Balance Equation
Figure 9.4
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The Soil-Water Balance Equation
Precipitation
Evaporation
Runoff
Infiltration
Infiltration Precip Evap Runoff
Figure 9.4
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The Soil-Water Balance Equation
Transpiration
Evaporation
Infiltration
Potential Evapotranspiration Maximum
evaporation and transpiration possible
Figure 9.4
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Types of Soil Moisture
Figure 9.9
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SOIL MOISTURE

• 3) Water - important to plants, solutions, and
  chemical reactions.
• Types of water in soils
• Hygroscopic water
• Water attached to grains
• Capillary water
• Gravitational water

http//www.denislindsell.demon.co.uk/pasture/soils
/index.htm
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SOILS CONTENTS

• 3) Water - important to plants, solutions, and
  chemical reactions.
• Types of water in soils
• Hygroscopic water
• Capillary water
• Gravitational water

http//www.ianr.unl.edu/pubs/fieldcrops/g964.htm
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Gravitational water saturated soils, groundwater
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Precipitation in North America
Figure 9.6
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Potential Evapotranspiration
Figure 9.8
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Sample Water Budget
Figure 9.11
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Groundwater Resources  

• Groundwater Profile and Movement  
• Aquifers, Wells, and Springs  
• Overuse of Groundwater  
• Pollution of Groundwater  

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Groundwater potential
Figure 9.15
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Groundwater Characteristics
Figure 9.16
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Groundwater Characteristics
Figure 9.16
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High Plains Aquifer Overdraft
Figure 1
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Our Water Supply 

• Water Supply in the United States  
• Instream, Nonconsumptive, and Consumptive Uses  
• Future Considerations

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US Water Budget
Figure 9.20
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Water Withdrawal by Sector
Figure 9.21
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Global Water Scarcity
Figure 9.22
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End of Chapter 9
Geosystems 5e An Introduction to Physical
Geography

Robert W. Christopherson Charlie Thomsen