Suppose a well 0.30m in diameter has been pumped at a rate of 5,000cu.m/day for a long enough time that steady-state conditions apply. An observation well located 20m from the pumped well has been drawn down by 1.0m, and another well at 100m is drawn down by 0.5m. The pumped well extends completely through an unconfined aquifer 40.0m thick. Determine the hydraulic conductivity, K. Estimate the drawdown at the pumped well. State any assumptions made.

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Chapter2: Loads On Structures
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QUESTION No. 4
Suppose a well 0.30m in diameter has been pumped at a rate of 5,000cu.m/day for a long
enough time that steady-state conditions apply. An observation well located 20m from
the pumped well has been drawn down by 1.0m, and another well at 100m is drawn down
by 0.5m. The pumped well extends completely through an unconfined aquifer 40.0m
thick.
Determine the hydraulic conductivity, K.
Estimate the drawdown at the pumped well. State any assumptions made.
Transcribed Image Text:QUESTION No. 4 Suppose a well 0.30m in diameter has been pumped at a rate of 5,000cu.m/day for a long enough time that steady-state conditions apply. An observation well located 20m from the pumped well has been drawn down by 1.0m, and another well at 100m is drawn down by 0.5m. The pumped well extends completely through an unconfined aquifer 40.0m thick. Determine the hydraulic conductivity, K. Estimate the drawdown at the pumped well. State any assumptions made.
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