GROUNDWATER WHAT IS THE CHART SHOWING? Water table Zone of aeration Zone of saturation Water table What will make the water table rise?u/meec/module06/Th eWaterTable.htmhttp://techalive.mtu.ed u/meec/module06/Th eWaterTable.htm What will make the water table lower? Groundwater affects surface water Permeability permeabilityermeability.htmhttp://techalive.mtu.edu/meec/module06/P ermeability.htm AQUIFERS Ogallala Aquifer!Needs to be below water table in a permeable layer Ogallala aquifer- fastest disappearing aquifer in the world WELLS Needs to be in an aquifer PUMPING WELLS Creates cone of depression Lowers water table Creates a drawdown Formation of a cone of depression in the water table Cone of depression subsidence Pumping out gw lowers the surface Surface Slowly sinks Artesian wells Flows to the surface naturally Under pressure sandwiched between two impermeable layers Flowing vs. non flowing GROUNDWATER POLLUTION SOURCES Septic tanks Landfills Fertilizers/pesticides Underground storage tanks (gas stations) Septic tanks landfills Hot springs and geysers Groundwater heated by magma reaches the surface Steamboat, CO OLD FAITHFUL Webcam:atures/yell/webcam/ol dFaithfulStreaming.ht mlatures/yell/webcam/ol dFaithfulStreaming.ht ml Eruptions every minutes apart Time is increasing- why?a.org/wikipedia/comm ons/transcoded/4/46/ OldFaithful.ogg/OldFa ithful.ogg.360p.webmhttp://upload.wikimedi a.org/wikipedia/comm ons/transcoded/4/46/ OldFaithful.ogg/OldFa ithful.ogg.360p.webm hill.com/sites/ /student_view0/ chapter11/animations_and_movies.html#http://highered.mcgraw- hill.com/sites/ /student_view0/ chapter11/animations_and_movies.html#