Lecture6 - Groundwater P = Q ET G S Floridan Aquifer Extent...

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Groundwater P = Q + ET + G + S
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Floridan Aquifer Extent
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Geologic Profiles (Stratigraphy )
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Confinement
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Groundwater and Wetlands
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Transmissivit y How much water can be moved horizontally Function of thickness and Ksat Good measure of well productivity Floridan is the most transmissive aquifer in the world
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Loss of Potential
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Potentiometric Surface Elevation of “free water surface” Where this surface and the ground intersect (and there’s no confinement) water seeps
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Relevant Questions Where is the water going? Potentiometric (piezometric) surface How much water is moving? How quickly? Potentiometric surface and Darcys Law What level of natural assimilation is occuring? Water quality modeling
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Gainesville’s Well Field Also Lake City Jasper Geol ogy Land use Conserva tion Easemen t
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Murphree Wellfield Cone of Depression 1988 (Observed) 2010 (Predicted)
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How to make a sinkhole Pray for lots o Rain Suck a lot of water
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Drilling and pumping Developed into a hole 300ft deep and 300ft wide Hundreds of sinkholes developed over a period of 6 hours.
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