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
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