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Flood Risk Assessment under Climate Change: The Petite Nation River Watershed

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Type de ressource
Article de revue
Auteurs/contributeurs
  • Oubennaceur, Khalid (Auteur)
  • Chokmani, Karem (Auteur)
  • Gauthier, Yves (Auteur)
  • Ratte-Fortin, Claudie (Auteur)
  • Homayouni, Saeid (Auteur)
  • Toussaint, Jean-Patrick (Auteur)
Titre
Flood Risk Assessment under Climate Change: The Petite Nation River Watershed
Résumé
In Canada, climate change is expected to increase the extreme precipitation events by magnitude and frequency, leading to more intense and frequent river flooding. In this study, we attempt to map the flood hazard and damage under projected climate scenarios (2050 and 2080). The study was performed in the two most populated municipalities of the Petite Nation River Watershed, located in southern Quebec (Canada). The methodology follows a modelling approach, in which climate projections are derived from the Hydroclimatic Atlas of Southern Quebec following two representative concentration pathways (RCPs) scenarios, i.e., RCP 4.5 and RCP 8.5. These projections are used to predict future river flows. A frequency analysis was carried out with historical data of the peak flow (period 1969–2018) to derive different return periods (2, 20, and 100 years), which were then fed into the GARI tool (Gestion et Analyse du Risque d’Inondation). This tool is used to simulate flood hazard maps and to quantify future flood risk changes. Projected flood hazard (extent and depth) and damage maps were produced for the two municipalities under current and for future scenarios. The results indicate that the flood frequencies are expected to show a minor decrease in peak flows in the basin at the time horizons, 2050 and 2080. In addition, the depth and inundation areas will not significantly change for two time horizons, but instead show a minor decrease. Similarly, the projected flood damage changes in monetary losses are projected to decrease in the future. The results of this study allow one to identify present and future flood hazards and vulnerabilities, and should help decision-makers and the public to better understand the significance of climate change on flood risk in the Petite Nation River watershed.
Publication
Climate
Volume
9
Numéro
8
Pages
125
Date
2021-08-05
Abrév. de revue
Climate
Langue
en
DOI
10.3390/cli9080125
ISSN
2225-1154
Titre abrégé
Flood Risk Assessment under Climate Change
URL
https://www.mdpi.com/2225-1154/9/8/125
Consulté le
2024-06-04 20 h 47
Catalogue de bibl.
DOI.org (Crossref)
Autorisations
https://creativecommons.org/licenses/by/4.0/
Référence
Oubennaceur, K., Chokmani, K., Gauthier, Y., Ratte-Fortin, C., Homayouni, S., & Toussaint, J.-P. (2021). Flood Risk Assessment under Climate Change: The Petite Nation River Watershed. Climate, 9(8), 125. https://doi.org/10.3390/cli9080125
Secteurs et disciplines
  • Nature et Technologie
Types d'événements extrêmes
  • Inondations et crues
Types d'inondations
  • Fluviales
Lien vers cette notice
https://bibliographies.uqam.ca/riisq/bibliographie/6VFUGC6Q

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