Fingal East Meath Flood Risk Assessment and Management Study

Flood mapping

Flood maps are one of the main outputs of the study and have been prepared in a number of different formats, each designed for various end uses, and representing both current and future flood risk. The flood maps have been generated from the outputs of the hydraulic computer models which provide data on water levels, flows, depths and velocities. The maps have been produced for 19 rivers in the study area and for the Fingal and Meath coastline and provide valuable graphical information on flooding within the study area.

The maps are being used within the study to identify areas of significant flood risk and to inform the development of flood risk management options. These flood maps can also be used to:

raise awareness of flood risks to property and life;
increase recognition of flood risk areas;
aid emergency response planning and action; and
inform spatial planning and development management within the floodplain and support the implementation of the Guidelines on the Planning System and Flood Risk Management.

Information on the main mapping formats being produced for the FEM FRAMS study is provided below:

Flood extent maps illustrate the estimated area inundated by a particular flood event;
Flood depth maps illustrate the estimated flood depths for areas inundated by a particular flood event;
Flood velocity maps show the speed of the flood water for areas inundated for a particular flood event; and
Flood hazard maps show the harm or danger which may be experienced by people in areas inundated for a particular flood event
Flood zone maps show the different classifications of land zonings for development and are used in conjunction with the Guidelines on the Planning System and Flood Risk Management

The flood maps will be available on the OPW flood hazard mapping website, www.floodmaps.ie, once the project has been completed. Draft flood maps for consultation can be downloaded from the following link.