[en] In arid and semi-arid regions, the hydro-sedimentary processes responsible for reservoir siltation remain insufficiently studied. This study focuses on the Taskourt Dam, one of the major reservoirs in the Marrakech-Safi region in central Morocco. A 450 cm thick sediment core was collected from the reservoir to assess the impact of extreme flood variability on sediment dynamic. A multi-approach analysis was conducted, including sequence analysis, grain-size and bulk and clay mineralogy of the sediments. In addition, hydrological parameters, instantaneous discharge, historical variations in daily water volumes in the reservoir, spillway discharge volumes, and siltation rates were determined through bathymetric surveys. The aim is to identify and evaluate the dynamics of sedimentation evolution within the reservoir. The results highlight two major phases in the siltation history of the Taskourt reservoir. (1) From 2011 to 2016, the siltation rate experienced rapid growth, marked by several major flood events. This intense sedimentary dynamic is illustrated by an accumulation of 418 cm of sediments. The floods of 2014 and 2016 strongly contributed to the intensification of flow energy and to a significant sediment load during this period. (2) From 2017 to 2023, the siltation significantly slowed down, associated with a prolonged drought period. This trend is recorded by a limited sedimentary deposit of 32 cm in thickness. This study provides valuable insights for the development of integrated sediment management strategies, supporting sustainable reservoir operation and effective planning, particularly in similar contexts worldwide.
Research Center/Unit :
Geology - ULiège
Disciplines :
Earth sciences & physical geography
Author, co-author :
Abidare, M’bark ; Laboratory of Georessources, Geoenvironment and Civil Engineering (L3G), Faculty of Sciences and Technology, Cadi Ayyad University, Marrakesh BP549, Morocco
Daoudi, Lahcen ; Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires ; Laboratory of Georessources, Geoenvironment and Civil Engineering (L3G), Faculty of Sciences and Technology, Cadi Ayyad University, Marrakesh BP549, Morocco
Rhoujjati, Ali ; Laboratory of Georessources, Geoenvironment and Civil Engineering (L3G), Faculty of Sciences and Technology, Cadi Ayyad University, Marrakesh BP549, Morocco
Fagel, Nathalie ; Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires
Language :
English
Title :
Multi-Criteria Approach for the Study of Dam Silting Processes in Arid and Semi-Arid Regions: Example of the Assif El-Mal Watershed, Morocco
Ekhtiari M. Zandieh M. Tirkolaee E.B. Optimizing the Dam Site Selection Problem Considering Sustainability Indicators and Uncertainty: An Integrated Decision-Making Approach J. Clean. Prod. 2023 428 139240 10.1016/j.jclepro.2023.139240
ICOLD World Register of Dams: General Synthesis Available online: https://www.icold-cigb.org/GB/world_register/general_synthesis.asp (accessed on 10 June 2025)
Serbaji M.M. Bouaziz M. Weslati O. Soil Water Erosion Modeling in Tunisia Using RUSLE and GIS Integrated Approaches and Geospatial Data Land 2023 12 548 10.3390/land12030548
Gourfi A. Daoudi L. Ben Daoud N. Fagel N. Clay Minerals in Soils and Sediment as Tracers of Provenance: The Case Study of the N’fis Watershed, Morocco Soil Use Manag. 2024 40 e12925 10.1111/sum.12925
Cerdà A. Morera A.G. Bodí M.B. Soil and Water Losses from New Citrus Orchards Growing on Sloped Soils in the Western Mediterranean Basin Earth Surf. Process. Landf. 2009 34 1822 1830 10.1002/esp.1889
Oudchaira S. Rhoujjati A. Hanich L. EL Hachimi M.L. Evaluating Soil Loss and Sediment Yield for Sustainable Management of the Hassan II Dam within Morocco’s Upper Moulouya Watershed Using RUSLE Model and GIS Environ. Earth Sci. 2024 83 210 10.1007/s12665-024-11518-0
Bammou Y. Benzougagh B. Bensaid A. Igmoullan B. Al-Quraishi A.M.F. Mapping of Current and Future Soil Erosion Risk in a Semi-Arid Context (Haouz Plain—Marrakech) Based on CMIP6 Climate Models, the Analytical Hierarchy Process (AHP) and RUSLE Model. Earth Syst. Environ. 2024 10 1501 1514 10.1007/s40808-023-01845-9
Lamane H. Mouhir L. Zouahri A. Baghdad B. El Bilali A. Moussadek R. Modeling Soil Erosion and Sediment Yield under Climate Change: A Comparison of RUSLE and MUSLE Integrated with SDR Using Variable Soil Data Resolutions Model. Earth Syst. Environ. 2025 11 343 10.1007/s40808-025-02544-3
Bammou Y. Benzougagh B. Igmoullan B. Al-Quraishi A.M.F. Ghaib F.A. Kader S. Assessing Soil Erosion Vulnerability in Semi-Arid Haouz Plain, Marrakech, Morocco: Land Cover, Socio-Spatial Mutations, and Climatic Variations Natural Resources Deterioration in MENA Region: Land Degradation, Soil Erosion, and Desertification Springer Berlin/Heidelberg, Germany 2024 113 133 10.1007/978-3-031-58315-5_7
Mosaid H. Barakat A. Bouras E.H. Ismaili M. El Garnaoui M. Abdelrahman K. Kahal A.Y. Dam Siltation in the Mediterranean Region Under Climate Change: A Case Study of Ahmed El Hansali Dam, Morocco Water 2024 16 3108 10.3390/w16213108
Benzougagh B. Al-Quraishi A.M.F. Bammou Y. Kader S. El Brahimi M. Sadkaoui D. Ladel L. Spectral Angle Mapper Approach (SAM) for Land Degradation Mapping: A Case Study of the Oued Lahdar Watershed in the Pre-Rif Region (Morocco) Natural Resources Deterioration in MENA Region: Land Degradation, Soil Erosion, and Desertification Springer Berlin/Heidelberg, Germany 2024 15 35 10.1007/978-3-031-58315-5_2
Salhi A. Benabdelouahab S. Heggy E. Soil Erosion Susceptibility Maps and Raster Dataset for the Hydrological Basins of North Africa Sci. Data 2025 12 65 10.1038/s41597-025-04406-0
Gourfi A. Daoudi L. Shi Z. The Assessment of Soil Erosion Risk, Sediment Yield and Their Controlling Factors on a Large Scale: Example of Morocco J. Afr. Earth Sci. 2018 147 281 299 10.1016/j.jafrearsci.2018.06.028
Arrebei N. Sabir M. Naimi M. Chikhaoui M. Raclot D. Reconstitution Des Données Historiques et Diagnostic de l’état Actuel Des Aménagements Antiérosifs Dans Le Bassin Versant Nekor Rev. Mar. Sci. Agron. Vét. 2019 7 267 272
Lamane H. Moussadek R. Baghdad B. Mouhir L. Briak H. Laghlimi M. Zouahri A. Soil Water Erosion Assessment in Morocco through Modeling and Fingerprinting Applications: A Review Heliyon 2022 8 e10209 10.1016/j.heliyon.2022.e10209
Romero-Díaz A. Alonso-Sarriá F. Martínez-Lloris M. Erosion Rates Obtained from Check-Dam Sedimentation (SE Spain). A Multi-Method Comparison Catena 2007 71 172 178 10.1016/j.catena.2006.05.011
Verstraeten G. Prosser I.P. Modelling the Impact of Land-Use Change and Farm Dam Construction on Hillslope Sediment Delivery to Rivers at the Regional Scale Geomorphology 2008 98 199 212 10.1016/j.geomorph.2006.12.026
Zhao G. Klik A. Mu X. Wang F. Gao P. Sun W. Sediment Yield Estimation in a Small Watershed on the Northern Loess Plateau, China Geomorphology 2015 241 343 352 10.1016/j.geomorph.2015.04.020
Gourfi A. Daoudi L. Rhoujjati A. Benkaddour A. Fagel N. Use of Bathymetry and Clay Mineralogy of Reservoir Sediment to Reconstruct the Recent Changes in Sediment Yields from a Mountain Catchment in the Western High Atlas Region, Morocco Catena 2020 191 104560 10.1016/j.catena.2020.104560
Zhao G. Mu X. Han M. An Z. Gao P. Sun W. Xu W. Sediment Yield and Sources in Dam-Controlled Watersheds on the Northern Loess Plateau Catena 2017 149 110 119 10.1016/j.catena.2016.09.010
Bussi G. Rodríguez-Lloveras X. Francés F. Benito G. Sánchez-Moya Y. Sopeña A. Sediment Yield Model Implementation Based on Check Dam Infill Stratigraphy in a Semiarid Mediterranean Catchment Hydrol. Earth Syst. Sci. 2013 17 3339 3354 10.5194/hess-17-3339-2013
Brignone G. Romero M. de Vries M.V.W. Ito E. Shapley M. Piovano E.L. Do Ice-Dam Rupture Events Leave a Distinctive Signature in Proglacial Lake Sediments? Quat. Res. 2024 123 70 82 10.1017/qua.2024.39
Kotti F. Dezileau L. Mahé G. Habaieb H. Bentkaya M. Dieulin C. Amrouni O. Etude de l’impact Des Barrages Sur La Réduction Des Transports Sédimentaires Jusqu’à La Mer Par Approche Paléohydrologique Dans La Basse Vallée de La Medjerda Proc. Int. Assoc. Hydrol. Sci. 2018 377 67 76 10.5194/piahs-377-67-2018
Chalaux-Clergue T. Foucher A. Chaboche P.A. Hayashi S. Tsuji H. Wakiyama Y. Huon S. Vandromme R. Cerdan O. Nakao A. et al. Impacts of Farmland Decontamination on 137Cs Transfers in Rivers after Fukushima Nuclear Accident: Evidence from a Retrospective Sediment Core Study Sci. Total Environ. 2024 947 174546 10.1016/j.scitotenv.2024.174546
Sabatier P. Moernaut J. Bertrand S. Van Daele M. Kremer K. Chaumillon E. Arnaud F. A Review of Event Deposits in Lake Sediments Quaternary 2022 5 34 10.3390/quat5030034
Wei Y. He Z. Li Y. Jiao J. Zhao G. Mu X. Sediment Yield Deduction from Check–Dams Deposition in the Weathered Sandstone Watershed on the North Loess Plateau, China Land Degrad. Dev. 2017 28 217 231 10.1002/ldr.2628
Kämpf L. Brauer A. Swierczynski T. Czymzik M. Mueller P. Dulski P. Processes of Flood-Triggered Detrital Layer Deposition in the Varved Lake Mondsee Sediment Record Revealed by a Dual Calibration Approach J. Quat. Sci. 2014 29 475 486 10.1002/jqs.2721
Salma K. Ahmed A. Abdellah A. Saloua A. Karima I. Contribution of GIS and Remote Sensing for the Mapping, Analysis and Forecasting of Susceptible Areas to Erosion in the Assif El Mal Watershed Indian J. Environ. Prot. 2023 43 41 47
Weit A. Mourier B. Fretaud T. Winiarski T. Combined Usage of Geophysical Methods in Continental Water Bodies, Their Benefits and Challenging Issues: A Special Focus on Sediment Deposits in Dam Reservoirs J. Appl. Geophys. 2023 213 105036 10.1016/j.jappgeo.2023.105036
Heiri O. Lotter A.F. Lemcke G. Loss on Ignition as a Method for Estimating Organic and Carbonate Content in Sediments: Reproducibility and Comparability of Results J. Paleolimnol. 2001 25 101 110 10.1023/A:1008119611481
Moore D.M. Reynolds R.C. Jr. X-Ray Diffraction and the Identification and Analysis of Clay Minerals 2nd ed. Oxford University Press New York, NY, USA 1997
Cook H.E. Johnson P.D. Matti J.C. Zemmels I. Methods of Sample Preparation and X-Ray Diffraction Data Analysis, X-Ray Mineralogy Laboratory, Deep Sea Drilling Project, University of California, Riverside Initial Reports of the Deep Sea Drilling Project U.S. Government Publishing Office Washington, DC, USA 1975 Volume 28
Moore D.M. Reynolds R.C. Jr. X-Ray Diffraction and the Identification and Analysis of Clay Minerals Oxford University Press New York, NY, USA 1989 Volume 38
Fagel N. Boski T. Likhoshway L. Oberhaensli H. Late Quaternary Clay Mineral Record in Central Lake Baikal (Academician Ridge, Siberia) Palaeogeogr. Palaeoclimatol. Palaeoecol. 2003 193 159 179 10.1016/S0031-0182(02)00633-8
Khalid H.W. Khalil R.M.Z. Qureshi M.A. The Egyptian Journal of Remote Sensing and Space Sciences Evaluating Spectral Indices for Water Bodies Extraction in Western Tibetan Plateau Egypt. J. Remote Sens. Sp. Sci. 2021 24 619 634 10.1016/j.ejrs.2021.09.003
Houmma I.H. Hadri A. Boudhar A. Karaoui I. Oussaoui S. El Khalki E.M. Chehbouni A. Kinnard C. Analysis of the Propagation Characteristics of Meteorological Drought to Hydrological Drought and Their Joint Effects on Low-Flow Drought Variability in the Oum Er Rbia Watershed, Morocco Remote Sens. 2025 17 281 10.3390/rs17020281
Benzougagh B. Meshram S.G. El Fellah B. Mastere M. Dridri A. Sadkaoui D. Mimich K. Khedher K.M. Combined Use of Sentinel-2 and Landsat-8 to Monitor Water Surface Area and Evaluated Drought Risk Severity Using Google Earth Engine Earth Sci. Inform. 2022 15 929 940 10.1007/s12145-021-00761-9
Mathewos M. Wosoro D. Wondrade N. Quantification of Soil Erosion and Sediment Yield Using the RUSLE Model in Boyo Watershed, Central Rift Valley Basin of Ethiopia Heliyon 2024 10 e31246 10.1016/j.heliyon.2024.e31246 38803885
Alebachew E.D. Abiye W. Dengiz O. Turan İ.D. Soil Erosion Estimation and Risk Assessment Based on RUSLE in Google Earth Engine (GEE) in Turkiye Ann. GIS 2025 31 123 141 10.1080/19475683.2025.2452262
Renard K. Foster G. Weesies G. McCool D. Yoder D. Predicting Soil Erosion by Water: A Guide to Conservation Planning with the Revised Universal Soil Loss Equation (RUSLE) United States Department of Agriculture, Agricultural Research Service Washington, DC, USA 1997 Volume 703
Wischmeier W.H. Smith D.D. Predicting Rainfall Erosion Losses: A Guide to Conservation Planning United States Department of Agriculture, Science and Education Administration Washington, DC, USA 1978
Sharpley A.N. Williams J.R. Erosion/Productivity Impact Calculator: 1. Model Documentation (EPIC) United States Department of Agriculture, Agricultural Research Service Washington, DC, USA 1990
Ben Daoud N. Daoudi L. Rachdane M. Gourfi A. Saidi M.E. Suitability of Satellite-Based Rainfall Products for Estimating Rainfall Erosivity in Areas with Contrasted Climate and Terrain Properties: Example of West-Central Morocco J. Earth Syst. Sci. 2024 133 78 10.1007/s12040-024-02287-2
van der Knijff J.M. Jones R.J.A. Montanarella L. Soil Erosion Risk Assessment in Europe EUR 19022 European Soil Bureau Ispra, Italy 2000
Elmouden A. Alahiane N. El Faskaoui M. El Morjani Z.E.A. Dams Siltation and Soil Erosion in the Souss-Massa River Basin Handbook of Environmental Chemistry Springer Berlin/Heidelberg, Germany 2017 Volume 53 95 120 9783319511290
Williams J.R. Berndt H.D. Sediment Yield Computed with Universal Equation ASCE J. Hydraul. Div. 1972 98 2087 2098 10.1061/JYCEAJ.0003498
Rachdane M. Saidi M.E. El Khalki E.M. Hadri A. Boughdadi S. Nehmadou M. Ahbari A. Tramblay Y. Unraveling Flood Dynamics at Sub-Daily Time Scales in Semi-Arid to Arid Basins in South Morocco Nat. Hazards 2024 121 5413 5433 10.1007/s11069-024-07022-0
Farquharson F.A.K. Meigh J.R. Sutcliffe J.V. Regional Flood Frequency Analysis in Arid and Semi-Arid Areas J. Hydrol. 1992 138 487 501 10.1016/0022-1694(92)90132-F
Tramblay Y. Villarini G. Zhang W. Observed Changes in Flood Hazard in Africa Environ. Res. Lett. 2020 15 1040b5 10.1088/1748-9326/abb90b
Zhang Q. Gu X. Singh V.P. Xiao M. Flood Frequency Analysis with Consideration of Hydrological Alterations: Changing Properties, Causes and Implications J. Hydrol. 2014 519 803 813 10.1016/j.jhydrol.2014.08.011
Tramblay Y. El Khalki E.M. Khedimallah A. Sadaoui M. Benaabidate L. Boulmaiz T. Boutaghane H. Dakhlaoui H. Hanich L. Ludwig W. et al. Regional Flood Frequency Analysis in North Africa J. Hydrol. 2024 630 130678 10.1016/j.jhydrol.2024.130678
Ben Slimane A. Raclot D. Evrard O. Sanaa M. Lefèvre I. Ahmadi M. Tounsi M. Rumpel C. Ben Mammou A. Le Bissonnais Y. Fingerprinting Sediment Sources in the Outlet Reservoir of a Hilly Cultivated Catchment in Tunisia J. Soils Sediments 2013 13 801 815 10.1007/s11368-012-0642-6
Valero-Garcés B.L. Navas A. Machín J. Walling D. Sediment Sources and Siltation in Mountain Reservoirs: A Case Study from the Central Spanish Pyrenees Geomorphology 1999 28 23 41 10.1016/S0169-555X(98)00096-8
Wang W. Fang N. Shi Z. Lu X. Prevalent Sediment Source Shift after Revegetation in the Loess Plateau of China: Implications from Sediment Fingerprinting in a Small Catchment Land Degrad. Dev. 2018 29 3963 3973 10.1002/ldr.3144
ABHT Gestion Des Phénomènes Extrêmes (Inondations) Available online: https://abht.ma/activites/gestion-des-phenomenes-extremes/inondations/ (accessed on 16 January 2025)
FloodList More Heavy Rain in Morocco Prompts High Level Flood Warnings Available online: https://floodlist.com/africa/heavy-rain-morocco-prompts-high-level-flood-warnings (accessed on 20 January 2025)
Rosburg T.T. Nelson P.A. Sholtes J.S. Bledsoe B.P. The Effect of Flow Data Resolution on Sediment Yield Estimation and Channel Design J. Hydrol. 2016 538 429 439 10.1016/j.jhydrol.2016.04.040
Mulder T. Chapron E. Flood Deposits in Continental and Marine Environments: Character and Significance Sediment Transfer from Shelf to Deep Water—Revisiting the Delivery System American Association of Petroleum Geologists Tulsa, OK, USA 2021 10.1306/13271348st613436
Benkirane M. Gourfi A. Millares A. Laftouhi N.E. Khabba S. How Can Flash Flood, Snowmelt, Topography, and Land Use Changes Affect Soil Erosion and Reservoir Sedimentation in a Semi-Arid Mountainous Watershed Located in the Moroccan High Atlas? Proceedings of the 39th IAHR World Congress Granada, Spain 9–24 June 2022 SS-1 10.3850/IAHR-39WC252171192022SS368
Bammou Y. Benzougagh B. Abdessalam O. Brahim I. Kader S. Spalevic V. Sestras P. Ercişli S. Machine Learning Models for Gully Erosion Susceptibility Assessment in the Tensift Catchment, Haouz Plain, Morocco for Sustainable Development J. Afr. Earth Sci. 2024 213 105229 10.1016/j.jafrearsci.2024.105229
Ouaba M. El Khalki E.M. Saidi M.E. Alam M.J. Bin Estimation of Flood Discharge in Ungauged Basin Using GPM-IMERG Satellite-Based Precipitation Dataset in a Moroccan Arid Zone Earth Syst. Environ. 2022 6 541 556 10.1007/s41748-022-00296-z
El Khalki E. Tramblay Y. Massari C. Brocca L. Simonneaux V. Gascoin S. El Mehdi Saidi M. Challenges in Flood Modeling over Data-Scarce Regions: How to Exploit Globally Available Soil Moisture Products to Estimate Antecedent Soil Wetness Conditions in Morocco Nat. Hazards Earth Syst. Sci. 2020 20 2591 2607 10.5194/nhess-20-2591-2020
Li X. Wei X. Analysis of the Relationship between Soil Erosion Risk and Surplus Floodwater during Flood Season J. Hydrol. Eng. 2014 19 1294 1311 10.1061/(ASCE)HE.1943-5584.0000912
Hilgert S. Sotiri K. Fuchs S. Review of Methods of Sediment Detection in Reservoirs Int. J. Sediment Res. 2024 39 28 43 10.1016/j.ijsrc.2023.12.004
Chamley H. Clay Sedimentology Springer Nature Durham, NC, USA 1989 623
Omdi F.E. Daoudi L. Fagel N. Origin and Distribution of Clay Minerals of Soils in Semi-Arid Zones: Example of Ksob Watershed (Western High Atlas, Morocco) Appl. Clay Sci. 2018 163 81 91 10.1016/j.clay.2018.07.013
Deng Z. Huang D. He Q. Chassagne C. Review of the Action of Organic Matter on Mineral Sediment Flocculation Front. Earth Sci. 2022 10 965919 10.3389/feart.2022.965919
Xue B. Huang L. Li X. Lu J. Gao R. Kamran M. Effect of Clay Mineralogy and Soil Organic Carbon in Aggregates under Straw Incorporation Agronomy 2022 12 534 10.3390/agronomy12020534
Marzougui A. Ben Mammou A. Quantification et Étude Géotechnique Des Alluvions Déposées Dans La Retenue Du Barrage Joumine (Nord de La Tunisie) Rev. Française Géotech. 2008 125 29 40 10.1051/geotech/2008125029
Cabral P. Ramalho F.L. Gomes S. Rocha H.M. Becegato V.A. Paulino A.T. Evaluation of Sediment Deposition Processes in Hydroelectric Plant: Case Study of Espora Reservoir, Brazil Water 2026 18 94 10.3390/w18010094
Zhang J. Yang M. Zhang F. Tang Y. Wang X. Wang Y. Revealing Soil Erosion Characteristics Using Deposited Sediment Sources in a Complex Small Catchment in the Wind-Water Erosion Crisscross Region of the Chinese Loess Plateau Geoderma 2020 379 114634 10.1016/j.geoderma.2020.114634
