Meteorological drought assessment using SPI and RDI indices in the Ourika Basin, Morocco
The Ourika basin is located on the northern edge of the Marrakech High Atlas, within a semi-arid to sub-humid climate. Its fragile natural environment is exposed to extreme and harsh climatic conditions, such as droughts and floods. The aim of our study is to evaluate and monitor meteorological and...
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EDP Sciences
2025-01-01
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| Series: | E3S Web of Conferences |
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| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/07/e3sconf_errachidia2024_04017.pdf |
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| author | Khrabcha Abdelali Oumou Abdellah Essahlaoui Ali Essahlaoui Narjisse Kassou Amina Mouzoun Ouafae Alitane Abdennabi El Hafyani Mohammed Iharzi Chaimae Van Rompaey Anton |
| author_facet | Khrabcha Abdelali Oumou Abdellah Essahlaoui Ali Essahlaoui Narjisse Kassou Amina Mouzoun Ouafae Alitane Abdennabi El Hafyani Mohammed Iharzi Chaimae Van Rompaey Anton |
| author_sort | Khrabcha Abdelali |
| collection | DOAJ |
| description | The Ourika basin is located on the northern edge of the Marrakech High Atlas, within a semi-arid to sub-humid climate. Its fragile natural environment is exposed to extreme and harsh climatic conditions, such as droughts and floods. The aim of our study is to evaluate and monitor meteorological and hydrological droughts in the Ourika basin during the experimental period from 1980 to 2019. The severity and duration of droughts are estimated using two drought indices: The Standardized Precipitation Index (SPI) and the Reconnaissance Drought Index (RDI). These indices were computed and analyzed using Drinc software. 8 meteorological drought sequences have been identified: 3 episodes were classified as severe droughts (1998-1999, 2004-2005, and 2016-2017), and 5 episodes were classified as moderate droughts, recorded during the years 1980-1981, 1982-1983, 1990-1991, 1994-1995, and 2006-2007. Analysis of hydro-rainfall data over the experimental study period (40 years) reveals disruptions accompanied by a decrease in rainfall and runoff. This indicates that the Ourika basin has generally experienced periods of moderate and severe meteorological and hydrological droughts, with a noticeable trend towards increasing drought conditions. |
| format | Article |
| id | doaj-art-dab622d1d4d94f0194bfdb888659273c |
| institution | Kabale University |
| issn | 2267-1242 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj-art-dab622d1d4d94f0194bfdb888659273c2025-02-05T10:49:24ZengEDP SciencesE3S Web of Conferences2267-12422025-01-016070401710.1051/e3sconf/202560704017e3sconf_errachidia2024_04017Meteorological drought assessment using SPI and RDI indices in the Ourika Basin, MoroccoKhrabcha Abdelali0Oumou Abdellah1Essahlaoui Ali2Essahlaoui Narjisse3Kassou Amina4Mouzoun Ouafae5Alitane Abdennabi6El Hafyani Mohammed7Iharzi Chaimae8Van Rompaey Anton9Laboratory of Geoengineering and Environment, Research Group “Water Sciences and Environment Engineering”, Department of Geology, Faculty of Sciences, Moulay Ismail UniversityLaboratory of Geoengineering and Environment, Research Group “Water Sciences and Environment Engineering”, Department of Geology, Faculty of Sciences, Moulay Ismail UniversityLaboratory of Geoengineering and Environment, Research Group “Water Sciences and Environment Engineering”, Department of Geology, Faculty of Sciences, Moulay Ismail UniversityLaboratory of Geoengineering and Environment, Research Group “Water Sciences and Environment Engineering”, Department of Geology, Faculty of Sciences, Moulay Ismail UniversityGeo-Resource, Geo-Environment and Oasis Geological Heritage Research Group, Engineering Sciences and Techniques Laboratory, Geosciences Department, Faculty of Sciences and Techniques, Moulay Ismail UniversityGeo-Resource, Geo-Environment and Oasis Geological Heritage Research Group, Engineering Sciences and Techniques Laboratory, Geosciences Department, Faculty of Sciences and Techniques, Moulay Ismail UniversityLaboratory of Geoengineering and Environment, Research Group “Water Sciences and Environment Engineering”, Department of Geology, Faculty of Sciences, Moulay Ismail UniversityNational Institute for Scientific and Technological Research in Water, University Ibn Zohr - Agadir · 5 Geography and Tourism Research Group, Department Earth and Environmental Science, KU LeuvenGeo-Resource, Geo-Environment and Oasis Geological Heritage Research Group, Engineering Sciences and Techniques Laboratory, Geosciences Department, Faculty of Sciences and Techniques, Moulay Ismail UniversityNational Institute for Scientific and Technological Research in Water, University Ibn Zohr - Agadir · 5 Geography and Tourism Research Group, Department Earth and Environmental Science, KU LeuvenThe Ourika basin is located on the northern edge of the Marrakech High Atlas, within a semi-arid to sub-humid climate. Its fragile natural environment is exposed to extreme and harsh climatic conditions, such as droughts and floods. The aim of our study is to evaluate and monitor meteorological and hydrological droughts in the Ourika basin during the experimental period from 1980 to 2019. The severity and duration of droughts are estimated using two drought indices: The Standardized Precipitation Index (SPI) and the Reconnaissance Drought Index (RDI). These indices were computed and analyzed using Drinc software. 8 meteorological drought sequences have been identified: 3 episodes were classified as severe droughts (1998-1999, 2004-2005, and 2016-2017), and 5 episodes were classified as moderate droughts, recorded during the years 1980-1981, 1982-1983, 1990-1991, 1994-1995, and 2006-2007. Analysis of hydro-rainfall data over the experimental study period (40 years) reveals disruptions accompanied by a decrease in rainfall and runoff. This indicates that the Ourika basin has generally experienced periods of moderate and severe meteorological and hydrological droughts, with a noticeable trend towards increasing drought conditions.https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/07/e3sconf_errachidia2024_04017.pdfdrought montoringspirdiourika watershed |
| spellingShingle | Khrabcha Abdelali Oumou Abdellah Essahlaoui Ali Essahlaoui Narjisse Kassou Amina Mouzoun Ouafae Alitane Abdennabi El Hafyani Mohammed Iharzi Chaimae Van Rompaey Anton Meteorological drought assessment using SPI and RDI indices in the Ourika Basin, Morocco E3S Web of Conferences drought montoring spi rdi ourika watershed |
| title | Meteorological drought assessment using SPI and RDI indices in the Ourika Basin, Morocco |
| title_full | Meteorological drought assessment using SPI and RDI indices in the Ourika Basin, Morocco |
| title_fullStr | Meteorological drought assessment using SPI and RDI indices in the Ourika Basin, Morocco |
| title_full_unstemmed | Meteorological drought assessment using SPI and RDI indices in the Ourika Basin, Morocco |
| title_short | Meteorological drought assessment using SPI and RDI indices in the Ourika Basin, Morocco |
| title_sort | meteorological drought assessment using spi and rdi indices in the ourika basin morocco |
| topic | drought montoring spi rdi ourika watershed |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/07/e3sconf_errachidia2024_04017.pdf |
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