Editing Hydrogeology of Egypt

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More information on the hydrogeology of Egypt is available in the report [https://www.bgs.ac.uk/africaGroundwaterAtlas/atlas.cfc?method=ViewDetails&id=AGLA060035 United Nations (1988)] (see References section, below).  
 
More information on the hydrogeology of Egypt is available in the report [https://www.bgs.ac.uk/africaGroundwaterAtlas/atlas.cfc?method=ViewDetails&id=AGLA060035 United Nations (1988)] (see References section, below).  
  
One summary of the major groundwater systems in Egypt is as follows (fromj [http://www.fao.org/nr/water/aquastat/countries_regions/EGY/ FAO Aquastat]):
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The major groundwater systems in Egypt are ([http://www.fao.org/nr/water/aquastat/countries_regions/EGY/ Aquastat]):
  
:- the Nile aquifer: this is mostly recharged by infiltration of excess irrigation water originally from the Nile river, so it is not an additional primary source of water but, does contain a secondary source of water available for use. In term of abstractions, it provides about 85% of the total groundwater abstractions in Egypt ([https://www.afdb.org/fileadmin/uploads/afdb/Documents/Environmental-and-Social-Assessments/Egypt_-__National_Drainage_Programme_ESMF_SUMMARY_-_05_2015.pdf AfDG 2015]).
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:- Nile aquifer: mostly recharged by infiltration of excess irrigation water originally from the Nile river, so it is not an additional primary source of water but a secondary source of water available for use. In term of abstractions, it provides about 85 percent of the total groundwater abstractions in the country ([https://www.afdb.org/fileadmin/uploads/afdb/Documents/Environmental-and-Social-Assessments/Egypt_-__National_Drainage_Programme_ESMF_SUMMARY_-_05_2015.pdf AfDG 2015]).
  
:- the Nubian sandstone aquifer: in the southwest of Egypt; shared with Libya, Chad and Sudan. Contains fossil groundwater.
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:- Nubian sandstone aquifer: fossil groundwater in the south west part of the country shared with Libya, Chad and Sudan
  
:- Fissured carbonate aquifer: widely spread over more than half of Egypt; overlies the Nubian aquifer
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:- Fissured carbonate aquifer: widely spread over more than half of the country’s area, on top of the Nubian aquifer
  
:- Moghra aquifer: towards the Qattara depression, recharged both by rainfall and lateral inflow from the Nile, but containing also saline water in the north west
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:-Moghra aquifer: towards the Qattara depression, recharged both by rainfall and lateral inflow from the Nile, but containing also saline water in the north west
  
:- Coastal aquifer: on the northern and western coasts; recharged by rainfall; known to contain saline water below fresh recharge, which limits the amount of fresh groundwater that can be abstracted.
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:- Coastal aquifer: on northern and western coasts, recharged by rainfall, but presence of saline water underneath limits the abstracted quantities
  
:- Basement aquifer: found mostly in the eastern desert and southern Sinai.
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:- Basement aquifer: mostly in eastern deserts and southern Sinai.
  
 
  [[File:Egypt_Hydrogeology.png| center | thumb| 500px | Hydrogeology of Egypt at 1:5million scale. For more information on how the map was developed see the [[Africa Groundwater Atlas Hydrogeology Maps | hydrogeology map]] resource page]]
 
  [[File:Egypt_Hydrogeology.png| center | thumb| 500px | Hydrogeology of Egypt at 1:5million scale. For more information on how the map was developed see the [[Africa Groundwater Atlas Hydrogeology Maps | hydrogeology map]] resource page]]

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