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The use of the NDWI in monitoring and assessing water resources: the case of Moulay Youssef Dam reservoir.

IWRA World Water Congress 2025 Marrakech Morocco
Water Security and Water-Related Risks
Author(s): Pr. Abdelilah Khanniba, Moulay El Mustapha El Berjaoui
Pr. Abdelilah Khanniba, Moulay El Mustapha El Berjaoui Institution(s): Higher School of Education and Training, Hassan First University, Berrechid
Poster: PDF

Abstract

Conclusion

  • Critical Capacity Loss: This study confirms that the Moulay Youssef Dam has reached an advanced stage of siltation
  • Methodological Efficacy: Landsat and NDWI offer a cost-effective, accurate alternative to traditional hydrographic surveys.
  • Water Security Threat: The current sedimentation rate poses a direct threat to irrigation sectors perimeter and the hydroelectric production capabilities.


Recommendations: Towards Integrated Management

To mitigate these risks, an Integrated River Basin Management (IRBM) approach is urgently required:

  • Upstream Conservation: Implementation of aggressive biological and mechanical erosion control measures (reforestation, check dams) in the Oued Tassaout headwaters to reduce sediment yield.
  • Downstream Protection: Dredging and maintenance of the Timinoutine compensation dam to prevent total clogging and ensure the continuity of water supply to irrigation canals.
  • Continuous Monitoring: Institutionalizing the use of Remote Sensing and GIS for real-time monitoring of water resources to support data-driven decision-making.