Flood risk perception and evacuation maps
in Paris, France metropolitan area


These maps show flood risk perceptions and evacuation behavior vary across the Paris metropolitan area in France at county, municipal, tract and 200 meter grid levels.

The maps are based on estimates derived from a dedicated 2018 large survey (n = 2,976) following a quota sampling with three stratified spatial categories (county, municipality, exposure) and three social categories (age, gender, education) across all flood exposure levels (none, indirect, direct). Geographical data is based on the INSEE 2018 delineations, municipalities, tracts, 200m grid . The estimates are derived from a statistical model using multilevel regression with post-stratification (MRP) along with demographic and geographic population characteristics.

Questions asked

  • Is it possible to rely on flood forecasts ?
  • In your neighborhood, are floods difficult to predict ?
  • Do you worry about flooding ?
  • Is your home in a flood risk zone ?
  • Is your home more exposed to flooding than the rest of the Paris metropolitan region ?
  • In your neighborhood, are floods difficult to prevent and control ?
  • In the event of a flood, would you assess your household as well prepared ?
  • If you received an official evacuation instruction, but you couldn’t see any floodwater, would you leave ?
  • In the event of a flood, would you go outside to get your car ?
  • Consider the event of a flood where the water is not visible yet and you experience no effects. However, if 1 in 3 families on your street had already left (33%) would you spontaneously evacuate without being instructed to do so ?
  • Respondents refusing to evacuate is not a direct question, but an indicator of responses where no evacuation question was answered with a “yes” under any scenario or circumstance.

    • This project was funded by the French National Agency for Research (ANR), the Institut Universitaire de France , the Mobile Lives Forum and CY Cery Paris University

    source : survey "Paris-IDF 2018"
    Representation of values at the municipal level for all the variables

    Representation of values at the scale of the Iris for all the variables

    Representation of values at grid scale for all variables