1 / 26

Chapter 20

Chapter 20. Water Supply, Use and Management. Groundwater and Streams. Groundwater Water found below the Earth’s surface, within the zone of saturation, below the water table Water table, recharge zones, discharge zones, aquifer, cone of depression Effluent Stream

laqueta
Download Presentation

Chapter 20

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Chapter 20 Water Supply, Use and Management Botkin and Keller Environmental Science 5e

  2. Botkin and Keller Environmental Science 5e

  3. Groundwater and Streams • Groundwater • Water found below the Earth’s surface, within the zone of saturation, below the water table • Water table, recharge zones, discharge zones, aquifer, cone of depression • Effluent Stream • A type of stream where flow is maintained during the dry season by groundwater seepage into the channel • Influent Stream • A type of stream that is everywhere above the groundwater table and flows in direct response to precipitation Botkin and Keller Environmental Science 5e

  4. Botkin and Keller Environmental Science 5e

  5. Botkin and Keller Environmental Science 5e

  6. Water Supply: A U.S. Example • Water budget • a model that balances the inputs, outputs and storage of water in a system. • Defines the natural variability and availability of water • Over 99% of the Earth’s water is unavailable or unsuitable for beneficial human use • It is expected that the total water withdrawn from streams and groundwater in the U.S will decrease but the consumptive use will increase Botkin and Keller Environmental Science 5e

  7. Botkin and Keller Environmental Science 5e

  8. Botkin and Keller Environmental Science 5e

  9. Desalination as a Water Source • Desalination: a technology to remove salt from water • Increased cost Botkin and Keller Environmental Science 5e

  10. Water Use • Off-stream use: • water removed from it’s source for use • In-stream use: • the use of rivers for navigation, hydroelectric power generation, fish and wildlife habitats and recreation Botkin and Keller Environmental Science 5e

  11. Botkin and Keller Environmental Science 5e

  12. Botkin and Keller Environmental Science 5e

  13. Botkin and Keller Environmental Science 5e

  14. Botkin and Keller Environmental Science 5e

  15. Water Conservation • the careful use and protection of water resources • Agricultural Use • Domestic Use • Industry and Manufacturing Use • Perception and Water Use Botkin and Keller Environmental Science 5e

  16. Botkin and Keller Environmental Science 5e

  17. Sustainable Water Use • The use of water resources by people in a way that allows society to develop and flourish into an indefinite future without degrading the various components of the hydrologic cycle or the ecological systems that depend on it Botkin and Keller Environmental Science 5e

  18. Botkin and Keller Environmental Science 5e

  19. Wetlands • Areas that are inundated by water or where the land is saturated to a depth of a few centimeters for at least a few days per year • Wetlands serve a variety of functions that benefit ecosystems and people Botkin and Keller Environmental Science 5e

  20. Botkin and Keller Environmental Science 5e

  21. Channelization and the Environment • Channelization: • An engineering technique that consists of straightening, deepening, widening, clearing, or lining existing stream channels • Purpose: • Control floods, improve drainage, etc. Botkin and Keller Environmental Science 5e

  22. Botkin and Keller Environmental Science 5e

  23. Flooding • The most universal natural hazard in the world • The frequency and severity are increased by urbanization • Avoid building on floodplains Botkin and Keller Environmental Science 5e

  24. Botkin and Keller Environmental Science 5e

  25. Botkin and Keller Environmental Science 5e

  26. Botkin and Keller Environmental Science 5e

More Related