Flood mapping produces maps identifying areas at risk of flooding under various scenarios (100-year floods, 200-year floods, etc.). These maps are essential for land use planning, building code application, emergency planning, and insurance. The federal government, through Natural Resources Canada and partnerships with provinces, supports flood mapping by providing technical guidance, funding, and data. Many Canadian communities lack current flood maps—mapping programs were discontinued in the 1990s, and existing maps don't reflect changed conditions from climate change and development. Renewed federal investment in flood mapping recognizes the critical need for accurate risk information. Flood maps inform development restrictions in floodplains, identify properties needing flood-proofing, support insurance pricing, and help emergency planners prepare evacuation routes and shelter locations. Updated mapping is a foundation for effective flood risk management.