Floodplain Maps

The outcome of Part 1 of the Flood Management Plan process is updated floodplain mapping. The maps demonstrate flood conditions under a major flood event on the Chemainus River combined with a significant coastal flooding event. Two types of maps have been created:

How to use the maps:

  • Both types of maps provide important information about the floodplain. The Flood Hazard Maps are often of more interest to community members.
  • Start with the Index Sheet of the maps you'd like to view for an overview of the floodplain and to read the notes that explain the maps.
  • Based on the Index Sheet, select the map for the area you are most interested in viewing (Sheets 1 - 4) and open that map.
  • Use the legend to interpret the flood event outputs in your area of interest. You can zoom in and pan around the map.
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