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Article Open Access February 13, 2026

Integrated GIS and geotechnical assessment of the stability of the Oued Ayda dike (Kesra Siliana, Tunisia)

Arbi Chafai 1,* and Khaled Taghouti 2
1
Department of Geology, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunisia
2
Department of Civil Engineering, Higher Institute of Technological Studies of Siliana, Tunisia
Publihed in: Current Research in Public Health (Volume 5, Issue 1, 2026)
Page(s): 1-10
DOI: 10.31586/wjgg.2026.6264
Received
December 20, 2025
Revised
January 29, 2026
Accepted
February 10, 2026
Published
February 13, 2026
Keywords
Earth dam; GIS; Geotechnical analysis; Slope stability; Oued Ayda; Tunisia
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright: Copyright © The Author(s), 2026. Published by Scientific Publications
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APA Style
Chafai, A. , & Taghouti, K. (2026). Integrated GIS and geotechnical assessment of the stability of the Oued Ayda dike (Kesra Siliana, Tunisia). Current Research in Public Health, 5(1), 1-10. https://doi.org/10.31586/wjgg.2026.6264
ACS Style
Chafai, A. ; Taghouti, K. Integrated GIS and geotechnical assessment of the stability of the Oued Ayda dike (Kesra Siliana, Tunisia). Current Research in Public Health 2026 5(1), 1-10. https://doi.org/10.31586/wjgg.2026.6264
Chicago/Turabian Style
Chafai, Arbi, and Khaled Taghouti. 2026. "Integrated GIS and geotechnical assessment of the stability of the Oued Ayda dike (Kesra Siliana, Tunisia)". Current Research in Public Health 5, no. 1: 1-10. https://doi.org/10.31586/wjgg.2026.6264
AMA Style
Chafai A, Taghouti K. Integrated GIS and geotechnical assessment of the stability of the Oued Ayda dike (Kesra Siliana, Tunisia). Current Research in Public Health. 2026; 5(1):1-10. https://doi.org/10.31586/wjgg.2026.6264 
@Article{crph6264,
AUTHOR = {Chafai, Arbi and Taghouti, Khaled},
TITLE = {Integrated GIS and geotechnical assessment of the stability of the Oued Ayda dike (Kesra Siliana, Tunisia)},
JOURNAL = {Current Research in Public Health},
VOLUME = {5},
YEAR = {2026},
NUMBER = {1},
PAGES = {1-10},
URL = {https://www.scipublications.com/journal/index.php/WJGG/article/view/6264},
ISSN = {2831-5162},
DOI = {10.31586/wjgg.2026.6264},
ABSTRACT = {This study proposes an integrated approach combining geographic information systems (GIS) and geotechnical analyses to assess the stability of the Oued Ayda mountain lake dam, located in the Siliana Governorate, northwestern Tunisia. The mechanical properties of the embankment and foundation materials were integrated into a Mohr-Coulomb geomechanical model, while the pore water pressure distribution was simulated for various representative hydromechanical scenarios: end of construction, normal operation, rapid drainage, and short- and long-term empty reservoir conditions. The stability analysis, performed using the Morgenstern-Price method with the SLOPE/W software (GeoStudio), reveals high safety factors on the upstream side (SF > 3 in the short term and SF ≥ 2 in the long term), indicating good resistance of this slope to hydraulic and mechanical stresses. Conversely, the results show that the downstream slope exhibits significantly lower safety factors, ranging from 1.335 to 1.338 under long-term conditions, particularly during normal operating and rapid drainage scenarios. These reduced values indicate a high vulnerability of this slope to persistent saturation and adverse hydraulic gradients. In conclusion, although the dam exhibits satisfactory overall stability, the downstream slope remains the most vulnerable area of the structure. The results underscore the need for rigorous management of water level fluctuations and suggest reinforcing the drainage system or implementing targeted stabilization measures to ensure the long-term safety and durability of the structure.},
}
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%A Chafai, Arbi
%A Taghouti, Khaled
%D 2026
%J Current Research in Public Health

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%M doi:10.31586/wjgg.2026.6264
%U https://www.scipublications.com/journal/index.php/WJGG/article/view/6264

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AU  - Chafai, Arbi
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AB  - This study proposes an integrated approach combining geographic information systems (GIS) and geotechnical analyses to assess the stability of the Oued Ayda mountain lake dam, located in the Siliana Governorate, northwestern Tunisia. The mechanical properties of the embankment and foundation materials were integrated into a Mohr-Coulomb geomechanical model, while the pore water pressure distribution was simulated for various representative hydromechanical scenarios: end of construction, normal operation, rapid drainage, and short- and long-term empty reservoir conditions. The stability analysis, performed using the Morgenstern-Price method with the SLOPE/W software (GeoStudio), reveals high safety factors on the upstream side (SF > 3 in the short term and SF ≥ 2 in the long term), indicating good resistance of this slope to hydraulic and mechanical stresses. Conversely, the results show that the downstream slope exhibits significantly lower safety factors, ranging from 1.335 to 1.338 under long-term conditions, particularly during normal operating and rapid drainage scenarios. These reduced values indicate a high vulnerability of this slope to persistent saturation and adverse hydraulic gradients. In conclusion, although the dam exhibits satisfactory overall stability, the downstream slope remains the most vulnerable area of the structure. The results underscore the need for rigorous management of water level fluctuations and suggest reinforcing the drainage system or implementing targeted stabilization measures to ensure the long-term safety and durability of the structure.
DO  - Integrated GIS and geotechnical assessment of the stability of the Oued Ayda dike (Kesra Siliana, Tunisia)
TI  - 10.31586/wjgg.2026.6264
ER  -