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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Assessment of water quality and quantity changes in ras jbel and guenniche aquifers (north-eastern t...
Assessment of water quality and quantity changes in ras jbel and guenniche aquifers (north-eastern tunisia) due to artificial recharge
In the aquifer of Metline-Ras Jbel-Raf Raf and the aquifer of Guenniche (North Eastern Tunisia), groundwater plays an
important role for social and economical development. Water in both aquifers is the sole drinking and irrigation source for
local residents. However, with the rapid increase in population, the extraction of groundwater is reaching its maximum
capacity. This intensive exploitation has considerably lowered the water table in and around the water catchments.
Groundwater salinization and degradation is usually observed through sampling of pumping wells. One supply
augmentation practice, that is already being applied in north-eastern Tunisia, is artificial groundwater recharge using
freshwater from SECADENORD. The purpose was to artificially replenish the overexploited aquifers, and thereby partially
restore the water table levels while maintaining production capacity. The impact of artificial recharge on the quality and the
quantity of both aquifers water then becomes a more pressing concern. Field measurements of piezometric levels and
physicochemical parameters, along with hydrochemistry analysis of groundwater were carried out in both Ras Jbel and
Guenniche aquifers during four campaigns before and after artificial recharge. Results of field and laboratory analyses
showed variations of chemical compositions across the study areas. A drop in piezometric level is be remedied by artificial
recharge of groundwater. Artificial recharge decreases also the high degrees of salinities in both aquifers.
File Size : 173,288 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 28/08/2015
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