Hydrogeology of Sierra Leone

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Africa Groundwater Atlas >> Hydrogeology by country >> Hydrogeology of Sierra Leone

Most of the textual information on this page was taken from the chapter on Sierra Leone in the report ‘Groundwater in North and West Africa’ (UN 1988). This information is outdated. If you have more recent information on the hydrogeology of Sierra Leone, please get in touch.

Compilers

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

Geographical Setting

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

General

Estimated Population in 2013* XXX
Rural Population (% of total) (2013)* XXX%
Total Surface Area* XXX sq km
Agricultural Land (% of total area) (2012)* XXX%
Capital City XXX
Region XXX
Border Countries XXX
Annual Freshwater Withdrawal (2013)* XXX Million cubic metres
Annual Freshwater Withdrawal for Agriculture (2013)* XXX%
Annual Freshwater Withdrawal for Domestic Use (2013)* XXX%
Annual Freshwater Withdrawal for Industry (2013)* XXX%
Rural Population with Access to Improved Water Source (2012)* XXX%
Urban Population with Access to Improved Water Source (2012)* XXX%

* Source: World Bank


Climate


Average monthly precipitation for Sierra Leone showing minimum and maximum (light blue), 25th and 75th percentile (blue), and median (dark blue) rainfall Average monthly temperature for Sierra Leone 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 Sierra Leone (For more information on the datasets used in the map see the surface water resources section)

Soil

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

Land cover

Land Cover Map of Sierra Leone (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 Sierra Leone. More information is available in the report UN (1988) (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).

Sierra Leone 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 Sierra Leone. More information is available in the report UN (1988) (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).

Sierra Leone 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 Sierra Leone. It, and others, can be accessed through the Africa Groundwater Literature Archive

United Nations. 1988. Groundwater in North and West Africa: Sierra Leone. United Nations Department of Technical Cooperation for Development and Economic Commission for Africa. Department of Technical Cooperation for Development and Economic Commission for Africa, Natural Resources/Water Series No. 18.


Return to the index pages

Africa Groundwater Atlas >> Hydrogeology by country >> Hydrogeology of Sierra Leone