April 9 and 14 Notes

April 9 and 14 Notes - GEO 1401 Test 3 Notes Groundwater...

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Unformatted text preview: GEO 1401 Test 3 Notes Groundwater Flow Groundwater moves through the porosity in rocks and soil Groundwater flow is driven by pressure Groundwater flows from high pressure to low pressure Can groundwater flow uphill? Yes. Like blowing water out of a straw facing upwards Potential surface- differences in elevation of the water table creates a pressure surface In unconfined aquifers the potential surface is the water table In confined aquifers the potential surface is defined by the height of the water in wells (the term water table is not applicable) so when you have a confining zone on it, it goes up the water wells and push the water up the well Ground water flows down potential (pressure) Spring- a place where April 14, 2008 Notes Cone of Depression Cone of depression- a conical depression in the water table (potential surface) Potential Surface Map Lines connect points of equal potential (pressure) Shows the shape of the pressure surface Confined vs. unconfined Used to see if the pressure decreases over time and shows the direction of groundwater flow...
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April 9 and 14 Notes - GEO 1401 Test 3 Notes Groundwater...

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