Editing Hydrogeology of Guinea

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====Basement====
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====Basement - Low to Moderate Productivity====
 
{| class = "wikitable"
 
{| class = "wikitable"
 
|Aquifer||Aquifer Productivity||Description
 
|Aquifer||Aquifer Productivity||Description
 
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|Precambrian (Archaean and Lower Proterozoic)
 
|Precambrian (Archaean and Lower Proterozoic)
||Low to Moderate Productivity
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||Crystalline basement rocks have virtually no intergranular porosity and permeability, and groundwater flow and storage is entirely dependent on the nature and degree of weathering and/or fracturing of the rock. A typical pattern in basement rocks is 'pockets' of weathering forming weathered basins, typically a few tens of metres deep and a few tens or hundreds metres across, in which there is enhanced permeability and groundwater storage potential. Typically, these kind of weathered basins have enough permeability and groundwater storage capacity to supply a borehole hand pump supply.
 
||Crystalline basement rocks have virtually no intergranular porosity and permeability, and groundwater flow and storage is entirely dependent on the nature and degree of weathering and/or fracturing of the rock. A typical pattern in basement rocks is 'pockets' of weathering forming weathered basins, typically a few tens of metres deep and a few tens or hundreds metres across, in which there is enhanced permeability and groundwater storage potential. Typically, these kind of weathered basins have enough permeability and groundwater storage capacity to supply a borehole hand pump supply.
 
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===Groundwater status===
 
===Groundwater status===

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