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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 Zone of saturation Water table
Groundwater affects surface water
Groundwater entering surface water
permeability http://techalive.mtu.edu/meec/module06/P ermeability.htmhttp://techalive.mtu.edu/meec/module06/P ermeability.htm
Groundwater speed http://techalive.mtu.edu/meec/module04/G roundwaterSpeed.htmhttp://techalive.mtu.edu/meec/module04/G roundwaterSpeed.htm
AQUIFERS Ogallala Aquifer!Saturated layer (below water table) Need interconnected pores (High permeability) Ogallala aquifer- ”fastest disappearing aquifer in the world”
WELLS Need permeable layer Under water table http://techalive.mtu.edu/meec/module06/WellDrilling.htm
PUMPING WELLS Creates cone of depression Lowers water table
Formation of a cone of depression in the water table
Artesian wells Flow to the surface naturally Under pressure “sandwiched between two impermeable layers Well must be below intake
Wikipedia’s version of artesian- is this correct?
GROUNDWATER POLLUTION SOURCES –Septic tanks –Landfills –Fertilizers/pesticides –Underground storage tanks (gas stations)
Natural contaminates Calcium, magnesium creates “hard water’ Will not suds up Creates white film in hot water pipes Irons creates bad taste
Hot springs and geysers Groundwater heated by magma reaches the surface
OLD FAITHFUL 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.
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#
Groundwater Chapter 9, Section 2.
Groundwater Chapter 16.
Groundwater and Karst Topography
Water Beneath the Surface
Earth as a System The hydrologic cycle Illustrates the circulation of Earth's water supply What processes make up the water cycle?
Groundwater Water that soaks into the ground after rain
Chapter 10 Groundwater What you NEED to Know. The Hydrosphere 97% of water is in the.001% is in the.0091% is in 2% is in.3% is.
Groundwater Makes up 23% of Earth’s freshwater. 12% Shallow (we can reach) 11% Deep (out of our reach)
14.1 Water in the Ground Key Idea: Factors such as the porosity and permeability of soil and rock materials affect the storage and movement of water in.
Groundwater Chapter 10.
Water Underground. How Water Moves Underground Water underground trickles down between particles of soil and through cracks and spaces in layers of rock.
Chapter 16- Groundwater What is groundwater?
Terms to Know Capillarity= attraction of water to the surface of rocks. Moves against gravity. Porosity= The size of the gaps between rocks Permeability=
What happens to rain or snow that falls on the ground?
Chapter 2 Fresh Water Section 5 Water Underground
Chapter 16 Study Notes: Groundwater.
Groundwater. What do you remember about how we get water from underground? Dig below the water table Dig below the water table Aquifer Aquifer Springs.
Last week we discussed how run-off can occur two different ways: Surface Run-off – water flowing on the surface to streams, rivers and oceans. Subsurface.
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