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GROUNDWATER

GROUNDWATER. Water table. Zone of aeration- pore spaces filled with air Zone of saturation- pore spaces filled with water Dividing line is called the water table. Zone of aeration. Water table. Zone of saturation. Groundwater affects surface water. Groundwater entering surface water.

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GROUNDWATER

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  1. GROUNDWATER

  2. Water table • Zone of aeration- pore spaces filled with air • Zone of saturation- pore spaces filled with water • Dividing line is called the water table Zone of aeration Water table Zone of saturation

  3. Groundwater affects surface water

  4. Groundwater entering surface water

  5. Permeability

  6. permeability • http://techalive.mtu.edu/meec/module06/Permeability.htm

  7. Groundwater speed • http://techalive.mtu.edu/meec/module04/GroundwaterSpeed.htm

  8. Ogallala Aquifer! Saturated layer (below water table) Need interconnected pores (High permeability) Ogallala aquifer-”fastest disappearing aquifer in the world” AQUIFERS

  9. WELLS • Need permeable layer • Under water table http://techalive.mtu.edu/meec/module06/WellDrilling.htm

  10. PUMPING WELLS • Creates cone of depression • Lowers water table

  11. Formation of a cone of depression in the water table

  12. Water stealing

  13. subsidence

  14. Flow to the surface naturally Under pressure “sandwiched between two impermeable layers Well must be below intake Artesian wells

  15. Wikipedia’s version of artesian- is this correct?

  16. GROUNDWATER POLLUTION • SOURCES • Septic tanks • Landfills • Fertilizers/pesticides • Underground storage tanks (gas stations)

  17. Septic tanks

  18. landfills right wrong

  19. Natural contaminates • Calcium, magnesium creates “hard water’ • Will not suds up • Creates white film in hot water pipes • Irons creates bad taste 

  20. Hot springs and geysers • Groundwater heated by magma reaches the surface

  21. Steamboat, CO

  22. With an error of 10 minutes, Old Faithful will erupt 65 minutes after an eruption lasting less than 2.5 minutes or 91 minutes after an eruption lasting more than 2.5 minutes. OLD FAITHFUL

  23. http://highered.mcgraw-hill.com/sites/0072402466/student_view0/chapter11/animations_and_movies.html#http://highered.mcgraw-hill.com/sites/0072402466/student_view0/chapter11/animations_and_movies.html#

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