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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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This note was uploaded on 04/30/2008 for the course GEO 1401 taught by Professor Dworkin during the Spring '08 term at Baylor.
- Spring '08