Flood Risk Assessment under Climate Change: The Petite Nation River Watershed
نویسندگان
چکیده
In Canada, climate change is expected to increase the extreme precipitation events by magnitude and frequency, leading more intense frequent river flooding. this study, we attempt map flood hazard damage under projected scenarios (2050 2080). The study was performed in two most populated municipalities of Petite Nation River Watershed, located southern Quebec (Canada). methodology follows a modelling approach, which projections are derived from Hydroclimatic Atlas Southern following representative concentration pathways (RCPs) scenarios, i.e., RCP 4.5 8.5. These used predict future flows. A frequency analysis carried out with historical data peak flow (period 1969–2018) derive different return periods (2, 20, 100 years), were then fed into GARI tool (Gestion et Analyse du Risque d’Inondation). This simulate maps quantify risk changes. Projected (extent depth) produced for current scenarios. results indicate that frequencies show minor decrease flows basin at time horizons, 2050 2080. addition, depth inundation areas will not significantly but instead decrease. Similarly, changes monetary losses future. allow one identify present hazards vulnerabilities, should help decision-makers public better understand significance on watershed.
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ژورنال
عنوان ژورنال: Climate
سال: 2021
ISSN: ['2225-1154']
DOI: https://doi.org/10.3390/cli9080125