A confined aquifer (permeable soil) is shown. This aquifer has a source of recharge located as shown. The hydraulic conductivity of the aquifer is 40 m/day with a porosity of 25%. The piezometric (head) surface in the two observation wells 1200 m apart are a elevations 65 m and 60 m, respectively from the common datum. The aquifer has ar average thickness of 25 m and an average width of 4 km. Determine the value of the time of travel from the head of the aquifer to a point

Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter7: Seepage
Section: Chapter Questions
Problem 7.1P
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Recharge
El. 65 m
El. 60 m
Aquifer
25 m
1200 m
Transcribed Image Text:Recharge El. 65 m El. 60 m Aquifer 25 m 1200 m
A confined aquifer (permeable soil) is shown. This aquifer has a source of recharge
located as shown. The hydraulic conductivity of the aquifer is 40 m/day with a porosity
of 25%. The piezometric (head) surface in the two observation wells 1200 m apart are at
elevations 65 m and 60 m, respectively from the common datum. The aquifer has an
average thickness of 25 m and an average width of 4 km.
Determine the value of the time of travel from the head of the aquifer to a point
1km downstream in days.
Transcribed Image Text:A confined aquifer (permeable soil) is shown. This aquifer has a source of recharge located as shown. The hydraulic conductivity of the aquifer is 40 m/day with a porosity of 25%. The piezometric (head) surface in the two observation wells 1200 m apart are at elevations 65 m and 60 m, respectively from the common datum. The aquifer has an average thickness of 25 m and an average width of 4 km. Determine the value of the time of travel from the head of the aquifer to a point 1km downstream in days.
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