{"id":211434,"date":"2026-04-07T14:40:56","date_gmt":"2026-04-07T18:40:56","guid":{"rendered":"https:\/\/inrs.ca\/?post_type=topic_post&#038;p=211434"},"modified":"2026-04-07T14:40:59","modified_gmt":"2026-04-07T18:40:59","slug":"our-monthly-science-question-how-can-we-better-prepare-for-flooding","status":"publish","type":"topic_post","link":"https:\/\/inrs.ca\/en\/inrs\/newsroom\/thematic-reports\/our-monthly-science-question\/our-monthly-science-question-how-can-we-better-prepare-for-flooding\/","title":{"rendered":"Our monthly science question: How can we\u00a0better prepare for\u00a0flooding?"},"content":{"rendered":"\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile is-image-fill-element has-background\" style=\"background:linear-gradient(135deg,rgb(238,238,238) 0%,rgb(234,234,234) 100%);grid-template-columns:auto 21%\"><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/inrs.ca\/wp-content\/uploads\/infographie_QSDM-avril2026_EN.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Read the article optimized for mobile devices<\/a><\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/inrs.ca\/wp-content\/uploads\/FINAL-infographie_QSDM-avril2026_FR.pdf\" target=\"_blank\" rel=\" noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"908\" height=\"1024\" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-ENG-908x1024.jpg\" alt=\"\" class=\"wp-image-211441 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-ENG-908x1024.jpg 908w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-ENG-266x300.jpg 266w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-ENG-768x866.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-ENG.jpg 1200w\" sizes=\"auto, (max-width: 908px) 100vw, 908px\" \/><\/a><\/figure><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"556\" class=\"wp-block-cover__image-background wp-image-211440 size-large\" alt=\"How can we better prepare for flooding? \n \nOur monthly science question: a series that demystifies complex topics with simple, effective answers. \" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-1-1024x556.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-1-1024x556.jpg 1024w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-1-300x163.jpg 300w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-1-768x417.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-1-1536x834.jpg 1536w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-1.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#60656d\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-cover is-light\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"555\" class=\"wp-block-cover__image-background wp-image-211439 size-large\" alt=\" \n\nWhy are floods so common in Quebec? \n\nIn Quebec, like in many northern regions where large amounts of snow accumulate, flooding is a recurring issue. Each season brings its own triggers: spring snowmelt, heavy rainfall and flash floods in summer and fall, and ice jams in winter. All these weather\u2011related phenomena can directly and sometimes dramatically increase flood risk. \" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-2-1024x555.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-2-1024x555.jpg 1024w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-2-300x163.jpg 300w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-2-768x416.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-2-1536x833.jpg 1536w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-2.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#99a6bd\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-cover is-light\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"556\" class=\"wp-block-cover__image-background wp-image-211438 size-large\" alt=\" \n\nModelling to better anticipate floods \n\nTo better understand and anticipate these risks, which are becoming more pronounced with climate change, scientists develop different forecasting and analysis tools. That\u2019s exactly the expertise of Professor Alain N. Rousseau at the Institut national de la recherche scientifique (INRS)! As an engineer specializing in hydrological modelling, based at the INRS Eau Terre Environnement Research Centre, he and his team create software tools to predict, manage, and analyze flooding hazards. \" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-3-1024x556.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-3-1024x556.jpg 1024w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-3-300x163.jpg 300w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-3-768x417.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-3-1536x834.jpg 1536w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-3.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#a9abb1\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-cover is-light\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"555\" class=\"wp-block-cover__image-background wp-image-211437 size-large\" alt=\"Two approaches, two perspectives, countless insights \n\nProfessor Rousseau\u2019s work relies on two key complementary methods: \n\n \n\nHydrological forecasting: This method uses weather forecasts as inputs to a mathematical model that predicts river flow rates and identifies potential flood risks. \n\n \n\nFloodplain mapping: Using hydraulic modelling, this approach defines the areas most likely to flood and helps guide land\u2011use planning decisions. \" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-4-1024x555.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-4-1024x555.jpg 1024w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-4-300x163.jpg 300w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-4-768x416.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-4-1536x833.jpg 1536w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-4.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#99acc0\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-cover is-light\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"555\" class=\"wp-block-cover__image-background wp-image-211436 size-large\" alt=\" \n\nWhen methods intersect, preparedness strengthens \n\nBy combining the results of both approaches, scientists can produce detailed flood\u2011hazard maps that show not just where flooding may occur, but also how severe it could be under different rainfall and river\u2011flow forecasts. These maps support public safety authorities in planning and implementing appropriate emergency measures based on local realities. \" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-5-1024x555.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-5-1024x555.jpg 1024w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-5-300x163.jpg 300w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-5-768x416.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-5-1536x833.jpg 1536w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-5.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#918c86\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-cover is-light\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"555\" class=\"wp-block-cover__image-background wp-image-211435 size-large\" alt=\"Supporting municipalities on the ground \n\nA concrete example: Professor Rousseau, along with \u00c9tienne Foulon (engineer\u2011in\u2011training and research associate at INRS) and Michel Leclerc (engineer and INRS associate professor, retired since 2007), recently helped the regional county municipalities (RCM) of Vaudreuil\u2011Soulanges and Argenteuil update their flood\u2011zone maps. \n\nThese maps will help municipalities identify vulnerable sectors, strengthen local resilience, and advise residents on preventive measures for their homes. Highlighting the importance of this work for public safety, the project is funded by the Quebec Ministry of Municipal Affairs and Housing, supporting efforts to prepare for the unpredictable. \" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-6-1024x555.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-6-1024x555.jpg 1024w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-6-300x163.jpg 300w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-6-768x416.jpg 768w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-6-1536x832.jpg 1536w, https:\/\/inrs.ca\/wp-content\/uploads\/QSM-Avril-6.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#b2b9c3\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n<div class=\"content-page-list-ctn\">\n    <h4 class=\"title\"><\/h4>\n    <div class=\"featured-cta-ctn -trio\">\n                    <div class=\"item jsBlockLink\">\n                <div class=\"image\">\n                                            <img decoding=\"async\" src=\"https:\/\/inrs.ca\/wp-content\/uploads\/Rousseau_Alain_D4_4857_web-600x400.jpg\" alt=\"Alain N. Rousseau\">\n                                    <\/div>\n                <div class=\"info\">\n                    <a class=\"link\" href=\"\/en\/research\/professors\/alain-n-rousseau\/\">Alain N. Rousseau<\/a>\n                <\/div>\n            <\/div>\n            <\/div>\n<\/div>","protected":false},"featured_media":211443,"parent":175375,"template":"","class_list":["post-211434","topic_post","type-topic_post","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Our monthly science question: How can we\u00a0better prepare for\u00a0flooding? | INRS<\/title>\n<meta name=\"description\" content=\"Why are floods so common in Quebec? In Quebec, like in many northern regions where large amounts of snow accumulate, flooding is a recurring issue. 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