The formation of a valley has a hydraulic conductivity of 400 ft/day and porosity of 0.25. The water table gradient was found to be 1 ft over 1000 ft. using two observation wells. The average depth of water table in the aquifer is 100 ft. (a) Determine the rate of flow per unit width of the aquifer. (b) How long it will take the groundwater to travel from the head of valley to the stream bank if the total distance is 1 mile (assume, porosity = 0.25).

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
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The formation of a valley has a hydraulic conductivity of 400 ft/day and porosity of 0.25. The
water table gradient was found to be 1 ft over 1000 ft. using two observation wells. The average
depth of water table in the aquifer is 100 ft.
(a) Determine the rate of flow per unit width of the aquifer.
(b) How long it will take the groundwater to travel from the head of valley to the stream
bank if the total distance is 1 mile (assume, porosity = 0.25).
Transcribed Image Text:The formation of a valley has a hydraulic conductivity of 400 ft/day and porosity of 0.25. The water table gradient was found to be 1 ft over 1000 ft. using two observation wells. The average depth of water table in the aquifer is 100 ft. (a) Determine the rate of flow per unit width of the aquifer. (b) How long it will take the groundwater to travel from the head of valley to the stream bank if the total distance is 1 mile (assume, porosity = 0.25).
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