If coarse sand is deposited above a layer of fine silt in an unconfined aquifer, which consequence follows?

💡 Explanation

The recharge rate into an aquifer will be limited by the layer with the lowest permeability. Because silt has a lower permeability than sand, the silt layer restricts water flow, therefore recharge is limited by the silt layer, rather than increased permeability or artesian pressure.

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