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Safe Yield

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Safe Yield

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Safe yield is defined as the maximum rate of withdrawal that can be sustained by an aquifer without causing an unacceptable decline in the hydraulic head or deterioration in water quality in the aquifer.


This is a concept or objective embracing the sustainable volume of water that can be abstracted from an aquifer over the long term.  At present there is debate in the literature regarding the quantification of this concept, factors influencing safe yield and time frames that should be considered.

Why is safe yield important?

When setting the safe yield of an aquifer an attempt is being made to guide water resource managers regarding the volume of groundwater that can be abstracted sustainably over the long-term.



Borehole testing