Flood hazard maps can show the limits of river floodplains and coastal flooding zones. Mapping is available in different formats from different sources.
British Columbia: https://www2.gov.bc.ca/gov/content/environment/air-land-water/water/drought-flooding-dikes-dams/integrated-flood-hazard-management/flood-hazard-land-use-management/floodplain-mapping/floodplain-maps-by-region
Alberta: https://maps.alberta.ca/FloodHazard/
Saskatchewan: N/A
Manitoba:
- Moose Jaw: http://citymj.maps.arcgis.com/apps/webappviewer/index.html?id=74f84a8667f74d52a5c749264ae929fd
- City of Prince Albert: https://www.citypa.ca/en/city-hall/resources/Documents/Flood-Plain-Mapping-Study-Final-Report-no-password.pdf
Ontario (selected Conservation Authority jurisdictions): http://www.camaps.ca/
Quebec: https://www.cehq.gouv.qc.ca/zones-inond/carte-esri/index.html
New Brunswick: http://www.snb.ca/geonb1/e/DC/catalogue-E.asp
Prince Edward Island: https://atlanticadaptation.ca/en/islandora/object/acasa%3A627
Nova Scotia: http://agrgims.cogs.nscc.ca/CoastalFlooding/map/
Newfoundland and Labrador: https://www.gov.nl.ca/mae/waterres/flooding/frm/
Yukon: N/A
Northwest Territories: N/A