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| Titel |
A Methodology to Assess and Evaluate Rainwater Harvesting Techniques in (Semi-)Arid Regions |
| VerfasserIn |
Ali Ammar, Michel Riksen, Mohamed Ouessar, Coen Ritsema |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250102071
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| Publikation (Nr.) |
 EGU/EGU2015-1350.pdf |
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| Zusammenfassung |
| Arid and semi-arid regions around the world are generally facing water scarcity problems
due to lack of precipitation and unpredictable rainfall patterns. For thousands of
years rainwater harvesting (RWH) techniques have been applied to cope with water
scarcity. Many researchers have presented and applied different methodologies for
determining suitable sites and techniques for RWH. However, there is still little
attention given to evaluation of the performance of RWH structures. The aim of this
research was to design a scientifically-based and generally applicable methodology to
evaluate and assess the performance of existing RWH techniques in (semi-) arid
regions. The methodology takes engineering, biophysical, and socio-economic criteria
into account to assess the performance of RWH using the Analytical Hierarchy
Process (AHP) supported by Geographic Information System (GIS). The Oum Zessar
watershed in south-eastern Tunisia is used as a case study site to test this evaluation tool.
The performance of 58 RWH locations (14 jessour and 44 tabias) in three main
sub-catchments of Oum Zessar watershed were assessed and evaluated. Based on
the criteria selected, 60performance, 36received good performance scores. The
results very accurately represent the real performance of each site. This integrated
methodology, which is highly flexible, saves time and costs, and is easy to adapt in different
regions, provides a scientifically based analytical tool to support designers and
decision makers aiming to improve the performance of existing and new RWH sites. |
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