Which material would form the best aquitard?
A. Sandstone
B. Gravel
C. Clay
D. Fractured limestone
Answer: Option C
Solution (By Examveda Team)
Clay has very low permeability, making it an excellent aquitard, which restricts the flow of groundwater.It effectively limits vertical movement of water between aquifers.This Question Belongs to Geological Engineering >> Groundwater And Hydrogeology
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