March16presentation_notes

March16presentation_notes - Topic: Aquifer Test Analysis...

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Topic: Aquifer Test Analysis Name: Nathan Holt What is an Aquifer Test? o Field Scale Test o Determines Aquifer Characteristics Transmissivity Storativity o Involves a Pumping Well and One or More Observation Wells o Drawdown is Measured in Observation Wells at Various Pumping Times Steady State Flow Condition o Steady State = Drawdown No Longer Changes with Pumping Time Inputs = Outputs o Thiem Equation: Finds aquifer characteristics for steady state condition Developed for both Confined and Unconfined Aquifer Unconfined finds Permeability Confined finds Transmissivity Transient Flow Condition o Drawdown Changes with Pumping Time Inputs do not equal outputs o Test Methods for Transient Flow Conditions Theis Match Point Method Best use: Nonleaky confined aquifer Cooper-Jacob Straight Line Method Best use: Nonleaky confined aquifer Straight line approximation of Theis Formula
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Hantush-Jacob Match Point Method Best use: Confined aquifer with leaky confining unit
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This note was uploaded on 10/19/2011 for the course GLY 3882 taught by Professor Screaton during the Spring '09 term at University of Florida.

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March16presentation_notes - Topic: Aquifer Test Analysis...

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