Lahnik O. auteur aut IRD Tramblay Yves auteur aut IRD Hanich L. auteur aut IRD Andersson J. C. M. auteur aut IRD Lguensat Redouane auteur aut IRD Isberg K. auteur aut IRD Ben Ahmed A. auteur aut IRD Dahn J. auteur aut IRD Sultan Benjamin auteur aut IRD text journalArticle eng text/pdf reformatted digital access Study Region: Morocco, North Africa. This study examines 36 mountainous basins that supply most of the country's surface water. Study Focus: This study aims to evaluate the potential impacts of climate change on discharge in Morocco. Two hydrological models, World Wide HYPE and GR4J-CemaNeige, were used in combination with outputs from nine bias-corrected regional climate models. Future discharge was projected under the high-emission RCP8.5 scenario for the mid-century (2040-2060) and late-century (2070-2100). By implementing a state-of-the-art modeling approach on numerous representative sites, the study provides a robust framework for assessing changes in hydrological processes and water availability. New Hydrological Insights for the Region: This research identifies critical changes in snow dynamics, with peak snow storage projected to decrease by over 50 % due to rising temperatures. Consequently, the contribution of snowmelt to discharge will significantly diminish. These snow-related shifts are heading to an average reduction in discharge of-55 % by the late century (2070-2100). This reduction is primarily driven by significant decreases in precipitation (up to-43 %) combined with substantial increases in potential evapotranspiration (up to +38 %). Additionally, hydrological droughts are expected to become more frequent and prolonged, underscoring the urgent need for adaptive water management strategies specifically designed to address basin-specific characteristics. specialized Climate change impacts Hydrological modeling Mountainous region Drought analysis Streamflow projection MAROC 062 021 020 59 102371 [22 p.] 2025 https://www.documentation.ird.fr/hor/fdi:010093424 10.1016/j.ejrh.2025.102371 [F B010093424] https://www.documentation.ird.fr/hor/fdi:010093424 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2025-05/010093424.pdf IRD - Base Horizon / Pleins textes 2025-05-14 2025-05-14 fdi:010093424 fre