Rib m. Q-6: Water flows in a confined aquifer from a fully penetrating river with a piezometric head of 12 m toward a river with a piezometric head of 10 m located 400 away. If the aquifer hydraulic conductivity and effective porosity are 3 m/day and 0.15 respectively, estimate the seepage velocity in the aquifer. Determine the drawdown and piezometric head 150 m from an upstream river.

Rib m. Q-6: Water flows in a confined aquifer from a fully penetrating river with a piezometric head of 12 m toward a river with a piezometric head of 10 m located 400 away. If the aquifer hydraulic conductivity and effective porosity are 3 m/day and 0.15 respectively, estimate the seepage velocity in the aquifer. Determine the drawdown and piezometric head 150 m from an upstream river.

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 7.4P

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A permeability pumping test was carried out in unconfined aquifer with the piezometric level before pumping is 2.18m below the ground surface. The first permeable layer has a thickness of 5.7m measured from the ground surface and the unconfined aquifer is 7.0m deep until reaches the aquiclude at the bottom. At a steady pumping rate of 15.6m^3/hr the drawdown in the observation wells were respectively equal to 1.62m and 0.47m. The distance of the observation wells from the center of the test well were 15m and 32m respectively. Compute the hydraulic conductivity?
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