Our flood mapping tool specifically for Ireland enables underwriters, planners and others to make better decisions and improve control over losses.

At a Glance

  • Detailed visualisations of potential flood risks throughout the Republic of Ireland
  • Covers 100% of properties in Ireland with building-level precision
  • Models all major sources of flooding
  • Major urban areas modelled on LiDAR
  • Enhanced approaches for resolving off-floodplain risks
  • Full range of return periods
  • Flexible delivery and integration to enhance your flood risk strategy
River Shannon, flood outline
Republic of Ireland Floodmap of the river Shannon, flood outline (in blue).

Floods are a natural and inescapable part of life in the Republic of Ireland. They might be caused by overflowing rivers, coastal storms and blocked or overworked drainage systems. The subsequent risk to property can be particularly acute in urban areas. Our Ireland FloodMap addresses this complexity by being the first to use the highest-level topographical data, LiDAR, and the most current hydrological science provided by the OPW’s Flood Studies Update.

Clear presentation of flood risk scenarios

Covering 100% of the country, Ireland FloodMap equips insurers with accurate, detailed and easy-to-understand flood information for all major sources of flooding – river, tidal, and surface water (pluvial). It enables you to quickly present flood risk scenarios to customers, brokers or underwriting teams visually, or by means of a flood risk score.

Flexible licensing options and industry-leading support

Ireland FloodMap is available with highly flexible and cost-effective licensing options. Our team of flood risk specialists are always on hand to advise you on how to get the most from the data, support you on deep-dive site analyses, and help you with integration.

Ireland FloodMap is regularly validated and calibrated using actual flood events in Ireland.


  • Visualisations of potential flood risks make it easy to identify potential flooding issues
  • Helps insurers, government agencies, property developers and emergency response services make better decisions around flood risk
  • Assists in planning best responses to floods
  • Helps you optimise pricing and improve loss ratios
  • Increases confidence in your portfolio management
  • Allows you to quickly assess new underwriting opportunities

Click to view the technical details

Key features

Industry-leading hydrological and 2D hydraulic modelling

Uses highly accurate Ordnance Survey Ireland (OSI) LiDAR data in urban areas of Dublin, Limerick, Galway and Cork

Includes the latest Flood Studies Update data for more accurate rainfall depths and flood flows

Flood sources

  • Fluvial (river)
  • Tidal (sea/estuary/coastal)
  • Pluvial (flash/surface water)

Layers available

  • Depths (maximum depth experienced during flood in metres)
  • Velocities (maximum velocity experienced during flood in metres per second)


Nominal vertical accuracy:

  • OSI LiDAR: +/- 0.15m (RMSE)


  • National best practice: river flow; rainfall; storm-surge peak
  • Office of Public Works (OPW) Flood Studies Update (FSU)


  • Full shallow water wave 2D modelling using Flowroute-i™, which allows for complex floodplain dynamics
  • Infiltration: spatially and temporarily variable
  • Building level precision – 2m (urban) and 5m (rural) horizontal grid postings


  • 100% coverage of Republic of Ireland

Modelled return periods

  • Full range from 1 in 30 years to 1 in 1,000 years

Update frequency

  • Annual/after major events validation
  • Regularly validated and calibrated against actual flood events in Ireland

Delivery formats

  • GIS layers: Shapefiles or Raster (floating point/classified depths/average annual loss)
  • Integrated with all GIS-compatible systems and third-party underwriting platforms, including Experian, LexisNexis, Spatial Key and Touchstone
  • Flat files to integrate within your systems
  • Physical/PDF maps


  • Flexible licensing depending on requirements
  • Regional scale pricing also available eg urban areas only can be taken separately
  • Annual subscription and transactional ‘per hit’ pricing models available

Uses 2m precision Ordnance Survey Ireland (OSI) LiDAR data in urban areas of Dublin, Limerick, Galway and Cork.

Mark Nunns

Get in Touch

To get a quote or to discuss what you need, contact Mark Nunns

Call me on 0203 857 8543   or Email at mark.nunns@ambientalrisk.com

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