An integrated approach for impact assessement of water harvesting techniques in dry areas: the case of oued Oum Zessar watershed (Tunisia)

M. Ouessar, M. Sghaier, F. Mahdhi, F. Abdeli, J. de Graaff, H. Chaieb, H. Yahyaoui, D. Gabriels

Research output: Contribution to journalArticleAcademicpeer-review

26 Citations (Scopus)

Abstract

In the arid regions of Tunisia, considerable investments are being made to maintain the old water harvesting techniques and introduce new ones to capture the scarce amount of rainwater (100 mm to 230 mm annually) for agricultural and domestic purposes. However, no detailed assessment of the multiple effects and the costs and benefits of these techniques have been made so far. This paper summarizes the results of an in depth investigation of the multiple impacts (runoff mobilization, ground water recharge, agro-socio-economic impacts) of the water harvesting works undertaken in the watershed of oued Oum Zessar (southeastern Tunisia). The importance of interdisciplinary and integrated approaches was revealed through this detailed impact assessment and economic evaluation. In fact, the profitability of the water harvesting works depends largely on the criteria chosen. However, further refinements are needed to better include all possible impacts (positive and negative) that occur as a result of the installation of the water harvesting structures
Original languageEnglish
Pages (from-to)127-140
JournalEnvironmental Monitoring and Assessment
Volume99
Issue number1-3
DOIs
Publication statusPublished - 2004

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