An unconfined aquifer is 100 feet thick was evaluated using a field pumping test. The depth to groundwater is 10 feet. At a distance of 1000 feet, the drawdown was 40 feet, and at a distance of 5000 feet it was 20 feet. Find the permeability of the aquifer assuming that a steady-state of 960 gal/minute during the test in ft/sec.
An unconfined aquifer is 100 feet thick was evaluated using a field pumping test. The depth to groundwater is 10 feet. At a distance of 1000 feet, the drawdown was 40 feet, and at a distance of 5000 feet it was 20 feet. Find the permeability of the aquifer assuming that a steady-state of 960 gal/minute during the test in ft/sec.
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter7: Permeability
Section: Chapter Questions
Problem 7.22P: Refer to Figure 7.24. The following data were collected during the field permeability measurement of...
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An unconfined aquifer is 100 feet thick was evaluated using a field pumping test.
The depth to groundwater is 10 feet. At a distance of 1000 feet, the drawdown
was 40 feet, and at a distance of 5000 feet it was 20 feet. Find the permeability of
the aquifer assuming that a steady-state of 960 gal/minute during the test in
ft/sec.
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I have drawn a diagram and wrote distance corresponding to their drawdown
Since from Theim's theory for unconfined aquifer i had applied the discharge formula from there i had calculated the permeability but must kept everything in proper unit to get the desired answer
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