URBAN EXPANSION AND ITS IMPACT ON WATER RESOURCES USING REMOTE SENSING AND GIS: CASE OF GREAT TUNIS.

S. SAIDI, S. AMMAR, F. JLASSI, S. BOURI

Abstract


The main objective of this work is to study the effects of urbanization on water resources in the Great Tunis, who knows a huge problem of anarchic urban expansion.

To highlight the spatial and temporal variation in urban areas the classification of satellite images was used for various periods (1987-2013) through remote sensing software. This classification demonstrate a twice increase of urban surface.

Using hydrologic equation and Geographical Information System (GIS) runoff and infiltrated water quantities are calculated in Greater Tunis basin allowed us to estimate the impact of urban expansion.

The application shows that urban expansion caused disturbances on groundwater and essentially changes in water characteristics such as flow, rates and quality and infiltration rates.


Keywords


Great Tunis, Urban Evolution, water resources, GIS, remote sensing.

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References


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