Kazakhstan - Overlap between surface water and groundwater

26 (billion cubic meters per year) in 2020

Between 2001 and 2020, Kazakhstan overlap between surface and groundwater remained stable at around 26 billion cubic meters per year.

The description is composed by our digital data assistant.
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 Kazakhstan overlap between surface and groundwater?