Modelled centennial flood of the main rivers of Lorraine

The dataset contains the modelled centennial flood envelope of the main rivers of Lorraine. In Lorraine when they were produced. ** Modelled centennial flood: Area exposed to the theoretical flood calculated from the analysis of past floods and which has a per cent chance to occur each year. It can also be said that the centennial flood occurs on average ten times per millennium. On the Moselle stream, the modelled flood of 1947 was represented in the modelled centennial flood layer because its return period is more than 100 years. VERBATIM: The flood zone atlas consists of three types of zoning: (the modelled centennial flood,the surface obtained by the hydrogeomorphological method, historical floods. The latter result from different methods and therefore have a different meaning. Any exploitation or representation of these data must be made knowingly with a distinction between the different zonings. Data produced on the Large Flood Risk Territories (HRT) under the Flood Directive have not been added to previously produced Flood Hazardous Area Atlas (AZI) data. They should be added to supplement the AZI.