Difference between revisions of "Hydrogeology of Republic of Congo"

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==[[Geography]]==
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[[Overview of Africa Groundwater Atlas | Africa Groundwater Atlas]] >> [[Hydrogeology by country | Hydrogeology by country]] >> Hydrogeology of the Republic of the Congo
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==[[Climate]]==
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'''Most of the textual information on this page was taken from the chapter on the Congo in the report [http://www.bgs.ac.uk/africagroundwateratlas/fulldetails.cfm?id=AGLA060005 ‘Groundwater in Eastern, Central and Southern Africa’] (UN 1989).  This information is outdated. If you have more recent information on the hydrogeology of the Republic of the Congo, please get in touch.'''
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===Climate zones===
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==Compilers==
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==[[Surface water]]==
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'''Dr Kirsty Upton''' and '''Brighid Ó Dochartaigh''', British Geological Survey, UK
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==[[Soil]]==
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==Geographical Setting==
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==[[Land cover]]==
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[[File: Republic of Congo_Political.png | right | frame | Map of the Republic of the Congo (For more information on the datasets used in the map see the [[Geography | geography resources section]])]]
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===General===
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{| class = "wikitable"
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|-
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|Estimated Population in 2013* || 4,447,632
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|-
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|Rural Population (% of total) (2013)* || 35.5%
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|-
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|Total Surface Area* || 341,500 sq km
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|-
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|Agricultural Land (% of total area) (2012)* || 31.0%
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|-
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|Capital City || Brazzaville
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|-
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|Region || Central Africa
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|-
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|Border Countries || Gabon, Cameroon, Central African Republic, Democratic Republic of the Congo
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|-
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|Annual Freshwater Withdrawal (2013)* || 46 Million cubic metres
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|-
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|Annual Freshwater Withdrawal for Agriculture (2013)* || 8.7%
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|-
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|Annual Freshwater Withdrawal for Domestic Use (2013)* || 69.6%
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|-
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|Annual Freshwater Withdrawal for Industry (2013)* || 21.7%
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|-
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|Rural Population with Access to Improved Water Source (2012)* || 38.8%
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|-
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|Urban Population with Access to Improved Water Source (2012)* || 95.7%
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|}
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<nowiki>*</nowiki> Source: World Bank
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===Climate===
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<gallery widths="375px" heights=365px mode=nolines>
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File: Republic of Congo_ClimateZones.png |Koppen Geiger Climate Zones
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File: Republic of Congo_ClimatePrecip.png |Average Annual Precipitation
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File: Republic of Congo_ClimateTemp.png |Average Temperature
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</gallery>
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[[File: Republic of Congo_pre_Monthly.png| 255x124px| Average monthly precipitation for the Republic of the Congo showing minimum and maximum (light blue), 25th and 75th percentile (blue), and median (dark blue) rainfall]] [[File:COUNTRY_tmp_Monthly.png| 255x124px| Average monthly temperature for the Republic of the Congo showing minimum and maximum (orange), 25th and 75th percentile (red), and median (black) temperature]] [[File: Republic of Congo_pre_Qts.png | 255x124px | Quarterly precipitation over the period 1950-2012]] [[File: Republic of Congo_pre_Mts.png|255x124px | Monthly precipitation (blue) over the period 2000-2012 compared with the long term monthly average (red)]]
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For further detail on the climate datasets used see the [[Climate | climate resources section]].
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===Surface water===
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{|
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|-
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|
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| [[File: Republic of Congo_Hydrology.png | frame | Surface Water Map of the Republic of the Congo (For more information on the datasets used in the map see the [[Surface water | surface water resources section]])]]
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|}
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===Soil===
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{|
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|-
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| [[File: Republic of Congo_soil.png | frame | Soil Map of the Republic of the Congo (For map key and more information on the datasets used in the map see the [[Soil | soil resources section]])]]
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|
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|}
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===Land cover===
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{|
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|-
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|
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| [[File: Republic of Congo_LandCover.png | frame | Land Cover Map of the Republic of the Congo (For map key and more information on the datasets used in the map see the [[Land cover | land cover resources section]])]]
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|}
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==Geology==
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This section provides a summary of the geology of the Republic of the Congo. More information is available in the report [http://www.bgs.ac.uk/africagroundwateratlas/fulldetails.cfm?id=AGLA060005  Groundwater in Eastern, Central and Southern Africa: Congo] (1989) (see References section, below).
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The geology map shows a simplified version of the geology at a national scale (see [[Geology | the Geology resources page]] for more details).
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[[File: Republic of Congo_Geology.png | right]]
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{| class = "wikitable"
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|+ Geological Environments
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|Key Formations||Period||Lithology||Structure
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|-
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!colspan="4"|Geological Environment 1
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|-
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|Name of formation1
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||Time period
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||Description
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||Structure
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|-
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|
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||
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||
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||
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|-
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!colspan="4"| Geological Environment 2
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|-
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||
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|-
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|-
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!colspan="4"| Geological Environment 3
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|}
  
==[[Geology]]==
 
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==Hydrogeology==
 
==Hydrogeology==
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===[[Aquifer properties]]===
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This section provides a summary of the hydrogeology of the main aquifers in the Republic of the Congo. More information is available in the report [http://www.bgs.ac.uk/africagroundwateratlas/fulldetails.cfm?id=AGLA060005  Groundwater in Eastern, Central and Southern Africa: Congo] (1989) (see References section, below).
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The hydrogeology map shows a simplified version of the type and productivity of the main aquifers at a national scale (see [[Aquifer properties| the Aquifer properties resource page]] for more details).
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[[File: Republic of Congo_Hydrogeology.png]] [[File: Hydrogeology_Key.png | 500x195px]]
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====Unconsolidated====
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{| class = "wikitable"
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|Named Aquifers||Period||General Description||Water quality
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|-
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|
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||
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||
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|}
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==== Sedimentary - Intergranular Flow====
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{| class = "wikitable"
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|Named Aquifers||Period||General Description||Water quality
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|-
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|
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||
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|}
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==== Sedimentary - Intergranular & Fracture Flow====
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{| class = "wikitable"
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|Named Aquifers||Period||General Description||Water quality
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|-
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|
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|}
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==== Sedimentary - Fracture Flow====
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{| class = "wikitable"
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|Named Aquifers||Period||General Description||Water quality
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|-
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|
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|}
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====Basement====
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{| class = "wikitable"
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|Named Aquifers||Period||General Description||Water quality
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|-
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|
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|}
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==Groundwater Status==
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===Groundwater quantity===
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===Groundwater quality===
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==Groundwater use and management==
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=== Groundwater use===
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=== Groundwater management===
  
===[[Groundwater quality issues | Groundwater quality]]===
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===Groundwater monitoring===
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==Groundwater use and  management==
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=== Transboundary aquifers===
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===[[Groundwater use]]===
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For further information about transboundary aquifers, please see the [[Transboundary aquifers | Transboundary aquifers resources page]]
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===[[Groundwater management]] and [[Transboundary aquifers]]===
 
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==References==
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The following report provides more information on the geology and hydrogeology of the Republic of the Congo. It can also be accessed through the [http://www.bgs.ac.uk/africagroundwateratlas/searchResults.cfm?title_search=&author_search=&category_search=&country_search=CG&placeboolean=AND&singlecountry=1 Africa Groundwater Literature Archive]
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United Nations. 1989. [http://www.bgs.ac.uk/africagroundwateratlas/fulldetails.cfm?id=AGLA060005  Groundwater in Eastern, Central and Southern Africa: Congo]. United Nations Department of Technical Cooperation for Development, Natural Resources/Water Series No.19
  
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==Return to the index pages==
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[[Overview of Africa Groundwater Atlas | Africa Groundwater Atlas]] >> [[Hydrogeology by country | Hydrogeology by country]] >> Hydrogeology of the Republic of the Congo
  
  
 
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Revision as of 09:44, 7 September 2015

Africa Groundwater Atlas >> Hydrogeology by country >> Hydrogeology of the Republic of the Congo

Most of the textual information on this page was taken from the chapter on the Congo in the report ‘Groundwater in Eastern, Central and Southern Africa’ (UN 1989). This information is outdated. If you have more recent information on the hydrogeology of the Republic of the Congo, please get in touch.

Compilers

Dr Kirsty Upton and Brighid Ó Dochartaigh, British Geological Survey, UK

Geographical Setting

Map of the Republic of the Congo (For more information on the datasets used in the map see the geography resources section)

General

Estimated Population in 2013* 4,447,632
Rural Population (% of total) (2013)* 35.5%
Total Surface Area* 341,500 sq km
Agricultural Land (% of total area) (2012)* 31.0%
Capital City Brazzaville
Region Central Africa
Border Countries Gabon, Cameroon, Central African Republic, Democratic Republic of the Congo
Annual Freshwater Withdrawal (2013)* 46 Million cubic metres
Annual Freshwater Withdrawal for Agriculture (2013)* 8.7%
Annual Freshwater Withdrawal for Domestic Use (2013)* 69.6%
Annual Freshwater Withdrawal for Industry (2013)* 21.7%
Rural Population with Access to Improved Water Source (2012)* 38.8%
Urban Population with Access to Improved Water Source (2012)* 95.7%

* Source: World Bank


Climate

Average monthly precipitation for the Republic of the Congo showing minimum and maximum (light blue), 25th and 75th percentile (blue), and median (dark blue) rainfall Average monthly temperature for the Republic of the Congo showing minimum and maximum (orange), 25th and 75th percentile (red), and median (black) temperature Quarterly precipitation over the period 1950-2012 Monthly precipitation (blue) over the period 2000-2012 compared with the long term monthly average (red)

For further detail on the climate datasets used see the climate resources section.

Surface water


Surface Water Map of the Republic of the Congo (For more information on the datasets used in the map see the surface water resources section)

Soil

Soil Map of the Republic of the Congo (For map key and more information on the datasets used in the map see the soil resources section)

Land cover

File:Republic of Congo LandCover.png
Land Cover Map of the Republic of the Congo (For map key and more information on the datasets used in the map see the land cover resources section)


Geology

This section provides a summary of the geology of the Republic of the Congo. More information is available in the report Groundwater in Eastern, Central and Southern Africa: Congo (1989) (see References section, below).

The geology map shows a simplified version of the geology at a national scale (see the Geology resources page for more details).

Republic of Congo Geology.png
Geological Environments
Key Formations Period Lithology Structure
Geological Environment 1
Name of formation1 Time period Description Structure
Geological Environment 2
Geological Environment 3


Hydrogeology

This section provides a summary of the hydrogeology of the main aquifers in the Republic of the Congo. More information is available in the report Groundwater in Eastern, Central and Southern Africa: Congo (1989) (see References section, below).

The hydrogeology map shows a simplified version of the type and productivity of the main aquifers at a national scale (see the Aquifer properties resource page for more details).

Republic of Congo Hydrogeology.png Hydrogeology Key.png


Unconsolidated

Named Aquifers Period General Description Water quality

Sedimentary - Intergranular Flow

Named Aquifers Period General Description Water quality

Sedimentary - Intergranular & Fracture Flow

Named Aquifers Period General Description Water quality

Sedimentary - Fracture Flow

Named Aquifers Period General Description Water quality

Basement

Named Aquifers Period General Description Water quality


Groundwater Status

Groundwater quantity

Groundwater quality

Groundwater use and management

Groundwater use

Groundwater management

Groundwater monitoring

Transboundary aquifers

For further information about transboundary aquifers, please see the Transboundary aquifers resources page


References

The following report provides more information on the geology and hydrogeology of the Republic of the Congo. It can also be accessed through the Africa Groundwater Literature Archive United Nations. 1989. Groundwater in Eastern, Central and Southern Africa: Congo. United Nations Department of Technical Cooperation for Development, Natural Resources/Water Series No.19

Return to the index pages

Africa Groundwater Atlas >> Hydrogeology by country >> Hydrogeology of the Republic of the Congo