GATE CE 2021 Set 1 — Question 34
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Water Resources Engineering → Hydrographs & Groundwater → Darcy's Law Application
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Question
Two reservoirs are connected through a homogeneous and isotropic aquifer having hydraulic conductivity () of 25 m/day and effective porosity () of 0.3 as shown in the figure (not to scale). Ground water is flowing in the aquifer at the steady state.
If water in Reservoir 1 is contaminated then the time (in days, round off to one decimal place) taken by the contaminated water to reach Reservoir 2 will be __________.
Correct answer
2400 to 2400
Solution
1.Calculate the hydraulic gradient ():
2.Calculate the discharge velocity () using Darcy's Law:
3.Calculate the seepage velocity ():
4.Calculate the time () taken to travel the distance m:
Rounding off to one decimal place, the time is 2400.0 days.Continue learning with Success Tracker
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