Ghana - Overlap between surface water and groundwater

25 (billion cubic meters per year) in 2020

Between 1971 and 2020, Ghana overlap between surface and groundwater remained stable at around 25 billion cubic meters per year.

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What is overlap between surface and groundwater?

Part of the renewable freshwater resources that is common to both surface water and groundwater. It is equal to groundwater drainage into rivers (typically, base flow of rivers) minus seepage from rivers into aquifers

What is Ghana overlap between surface and groundwater?