Problem 1 - An unconfined aquifer is 10 m thick and is being pumped so that one observation well placed at a distance of 76 m shows a drawdown of 0.5 m. On the opposite side of the extraction well is another observation well, 100 m from the extraction well, and this well shows a drawdown of 0.3 m. Assume the coefficient of permeability is 50 m/day. a. What is the discharge of the extraction well? b. Suppose the well at 100 m from the extraction well is now pumped. Show with a sketch what this will do to the drawdown.
Problem 1 - An unconfined aquifer is 10 m thick and is being pumped so that one observation well placed at a distance of 76 m shows a drawdown of 0.5 m. On the opposite side of the extraction well is another observation well, 100 m from the extraction well, and this well shows a drawdown of 0.3 m. Assume the coefficient of permeability is 50 m/day. a. What is the discharge of the extraction well? b. Suppose the well at 100 m from the extraction well is now pumped. Show with a sketch what this will do to the drawdown.
Chapter2: Loads On Structures
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Transcribed Image Text:Problem 1 - An unconfined aquifer is 10 m thick and is being pumped so that one observation well placed
at a distance of 76 m shows a drawdown of 0.5 m. On the opposite side of the extraction well is another
observation well, 100 m from the extraction well, and this well shows a drawdown of 0.3 m. Assume the
coefficient of permeability is 50 m/day.
a. What is the discharge of the extraction well?
b. Suppose the well at 100 m from the extraction well is now pumped. Show with a sketch what this will
do to the drawdown.
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