This is Ireland's national flood information map viewer created by the OPW (Office of Public Works). It provides access to flood hazard and flood risk information.The map viewer can be accessed by selecting the View Flood Maps button. To take a tour on how to use it, select Help in the app header.

Flood event probabilities are referred to in terms of a percentage Annual Exceedance Probability, or ‘AEP’. This represents the probability of an event of this, or greater, severity occurring in any given year. These probabilities may also be expressed as odds (e.g. 100 to 1) of the event occurring in any given year. They are also commonly referred to in terms of a return period (e.g. the 100-year flood), although this period is not the length of time that will elapse between two such events occurring, as, although unlikely, two very severe events may occur within a short space of time. The following sets out a range of flood event probabilities for which fluvial and coastal flood maps are typically developed; 5% Annual Exceedance Probability which can also be expressed as the 20 Year Return Period and as 20:1 odds of occurrence in any given year. 1% (Medium Probability) Annual Exceedance Probability which can also be expressed as the 100 Year Return Period and as 100:1 odds of occurrence in any given year. 0.1% (Low Probability) Annual Exceedance Probability which can also be expressed as the 1000 Year Return Period and as 1000:1 odds of occurrence in any given year. The Mid-Range Future Scenario extents where generated taking in the potential effects of climate change using an increase in rainfall of 20%. Data has been produced for catchments greater than 5km2 in areas for which flood maps were not produced under the National CFRAM Programme and should be read in this context. River reaches that have been modelled are indicated by the NIFM Modelled River Centrelines dataset. Flooding from other reaches of river may occur, but has not been mapped, and so areas that are not shown as being within a flood extent may therefore be at risk of flooding from unmodelled rivers (as well as from other sources). The purpose of the Flood Maps is not to designate individual properties or point locations at risk of flooding, or to replace a detailed site-specific flood risk assessment. Purpose:The data has been developed to inform a national assessment of flood risk that in turn will inform a review of the Preliminary Flood Risk Assessment required to comply with the requirements of the European Communities (Assessment and Management of Flood Risks) Regulations 2010 to 2015 (the “Regulations”) (implementing Directive 2007/60/EC) for the purposes of establishing a framework for the assessment and management of flood risks, aiming at the reduction of adverse consequences for human health, the environment, cultural heritage and economic activity associated with floods.

Abstract: This data shows the extent of land that might be flooded by the sea (coastal flooding) and the associated flood depths during a theoretical or ‘design’ flood event with an estimated probability of occurrence, rather than information for actual floods that have occurred in the past. This represents the worst case scenario as any flood defences potentially protecting the coastal floodplain are not taken into account. Flood event probabilities are referred to in terms of a percentage Annual Exceedance Probability, or ‘AEP’. This represents the probability of an event of this, or greater, severity occurring in any given year. These probabilities may also be expressed as the chance or odds (e.g. 200 to 1) of the event occurring in any given year. They are also commonly referred to in terms of a return period (e.g. the 200-year flood), although this period is not the length of time that will elapse between two such events occurring, as, although unlikely, two very severe events may occur within a short space of time. The following sets out the range of flood event probabilities for which coastal flood extent maps were developed, expressed in terms of Annual Exceedance Probability (AEP), and identifies their parallels under other forms of expression. 50% AEP can also be expressed as the 2 Year Return Period and as the 2:1 odds of occurrence in any given year. 20% AEP can also be expressed as the 5 Year Return Period and as the 5:1 odds of occurrence in any given year. 10% AEP can also be expressed as the 10 Year Return Period and as the 10:1 odds of occurrence in any given year. 5% AEP can also be expressed as the 20 Year Return Period and as the 20:1 odds of occurrence in any given year. 2% AEP can also be expressed as the 50 Year Return Period and as the 50:1 odds of occurrence in any given year. 1% AEP can also be expressed as the 100 Year Return Period and as the 100:1 odds of occurrence in any given year. 0.5% AEP can also be expressed as the 200 Year Return Period and as the 200:1 odds of occurrence in any given year. 0.1% AEP can also be expressed as the 1000 Year Return Period and as the 1000:1 odds of occurrence in any given year. The Mid-Range Future Scenario (MRFS) maps represent a projected future scenario for the end of century (circa 2100) and include allowances for projected future changes in sea levels and glacial isostatic adjustment (GIA). The maps include an increase of 500mm in sea levels above the current scenario estimations. An allowance of -0.5mm/year for GIA was included for the southern part of the national coastline only (Dublin to Galway and south of this). Flooding from other sources may occur and areas that are not shown as being within a flood extent may therefore be at risk of flooding from other sources. The flood extent and depth maps are suitable for the assessment of flood risk at a strategic scale only, and should not be used to assess the flood hazard and risk associated with individual properties or point locations, or to replace a detailed flood risk assessment. Lineage: The National Coastal Flood Hazard Maps (NCFHM) 2021 are ‘predictive’ flood maps, as they provide predicted flood extent and depth information for a ‘design’ flood event that has an estimated probability of occurrence (e.g. the 0.5% AEP event), rather than information for floods that have occurred in the past. The maps have been produced at a strategic level to provide an overview of coastal flood hazard in Ireland, and minor or local features may not have been included in their preparation. A Digital Terrain Model (DTM) was used to generate the maps, which is a ‘bare-earth’ model of the ground surface with the digital removal of human-made and natural landscape features such as vegetation, buildings and bridges. This methodology can result in some of these human-made features, such as bridges and embankments, being shown within a flood extent, when in reality they do not flood. It should be noted that the flood extent maps indicate the predicted maximum extent of flooding, and flooding in some areas, such as near the edge of the floodplain area, might be very shallow. The predicted depth of flooding at a given location is indicated on the flood depth maps. The flood depth is displayed as a constant depth over grid squares with a 5m resolution, whereas in reality depths may vary within a given grid square. No post-processing of the flood extent and depth map datasets has been undertaken to remove small areas of flooding that are remote and isolated, small islands within the flooded area, etc. Local factors such as flood defence schemes, structures in or around river channels (e.g. bridges), buildings and other local influences, which might affect coastal flooding, have not been accounted for. Detailed explanations of the methods of derivation, data used, etc. is provided in the NCFHM 2021 Flood Mapping Methodology Report. Users of the maps should familiarise themselves fully with the contents of this report in advance of the use of the maps. Purpose: The data has been developed to inform a national assessment of flood risk that in turn will inform a review of the Preliminary Flood Risk Assessment required to comply with the requirements of the European Communities (Assessment and Management of Flood Risks) Regulations 2010 to 2015 (the “Regulations”) (implementing Directive 2007/60/EC) for the purposes of establishing a framework for the assessment and management of flood risks, aiming at the reduction of adverse consequences for human health, the environment, cultural heritage and economic activity associated with floods.

Introduction

The Strategic Flood Map (Surface Water) map service is a multi layered predictive flood mapping product providing a strategic overview of areas across Northern Ireland that could be affected by surface water flooding. The Strategic Flood Map (Surface Water) includes the following layers of information for present day epoch: • Floods with a medium probability

Purpose of the data

The dataset has been designed to raise awareness among the public, Government Departments, local authorities and other organisations of the likelihood of surface water flooding, thus supporting a more proactive and co-operative approach to flood risk management. By being aware of the land estimated to be at risk of flooding, authorities can develop strategies to better manage flood risk through their planning, flood prevention, and emergency planning functions.

Data Coverage

All of Northern Ireland, with some limited coverage in Republic of Ireland in border areas.

Data Format

OGC (Open Geospatial Consortium) compliant Web Mapping Service in WGS 1984 projection, accessible via secure website (requires authentication by user specific username and password).

Data content

Strategic Surface Water Floodplain (Present Day) o Medium Probability (1 in 200 year rainfall event)

National Coastal Flood Depths 2021 - Mid-Range Future Scenario. Published by Office of Public Works. Available under the license Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 (cc-by-nc-nd).Abstract: This data shows the extent of land that might be flooded by the sea (coastal flooding) and the associated flood depths during a theoretical or ‘design’ flood event with an estimated probability of occurrence, rather than information for actual floods that have occurred in the past. This represents the worst case scenario as any flood defences potentially protecting the coastal floodplain are not taken into account.

Flood event probabilities are referred to in terms of a percentage Annual Exceedance Probability, or ‘AEP’. This represents the probability of an event of this, or greater, severity occurring in any given year. These probabilities may also be expressed as the chance or odds (e.g. 200 to 1) of the event occurring in any given year. They are also commonly referred to in terms of a return period (e.g. the 200-year flood), although this period is not the length of time that will elapse between two such events occurring, as, although unlikely, two very severe events may occur within a short space of time. The following sets out the range of flood event probabilities for which coastal flood extent maps were developed, expressed in terms of Annual Exceedance Probability (AEP), and identifies their parallels under other forms of expression.

50% AEP can also be expressed as the 2 Year Return Period and as the 2:1 odds of occurrence in any given year. 20% AEP can also be expressed as the 5 Year Return Period and as the 5:1 odds of occurrence in any given year. 10% AEP can also be expressed as the 10 Year Return Period and as the 10:1 odds of occurrence in any given year. 5% AEP can also be expressed as the 20 Year Return Period and as the 20:1 odds of occurrence in any given year. 2% AEP can also be expressed as the 50 Year Return Period and as the 50:1 odds of occurrence in any given year. 1% AEP can also be expressed as the 100 Year Return Period and as the 100:1 odds of occurrence in any given year. 0.5% AEP can also be expressed as the 200 Year Return Period and as the 200:1 odds of occurrence in any given year. 0.1% AEP can also be expressed as the 1000 Year Return Period and as the 1000:1 odds of occurrence in any given year.

The Mid-Range Future Scenario (MRFS) maps represent a projected future scenario for the end of century (circa 2100) and include allowances for projected future changes in sea levels and glacial isostatic adjustment (GIA). The maps include an increase of 500mm in sea levels above the current scenario estimations. An allowance of -0.5mm/year for GIA was included for the southern part of the national coastline only (Dublin to Galway and south of this).

Flooding from other sources may occur and areas that are not shown as being within a flood extent may therefore be at risk of flooding from other sources. The flood extent and depth maps are suitable for the assessment of flood risk at a strategic scale only, and should not be used to assess the flood hazard and risk associated with individual properties or point locations, or to replace a detailed flood risk assessment. Lineage: The National Coastal Flood Hazard Maps (NCFHM) 2021 are ‘predictive’ flood maps, as they provide predicted flood extent and depth information for a ‘design’ flood event that has an estimated probability of occurrence (e.g. the 0.5% AEP event), rather than information for floods that have occurred in the past.

The maps have been produced at a strategic level to provide an overview of coastal flood hazard in Ireland, and minor or local features may not have been included in their preparation. A Digital Terrain Model (DTM) was used to generate the maps, which is a ‘bare-earth’ model of the ground surface with the digital removal of human-made and natural landscape features such as vegetation, buildings and bridges. This methodology can result in some of these human-made features, such as bridges and embankments, being shown within a flood extent, when in reality they do not flood.

It should be noted that the flood extent maps indicate the predicted maximum extent of flooding, and flooding in some areas, such as near the edge of the floodplain area, might be very shallow. The predicted depth of flooding at a given location is indicated on the flood depth maps. The flood depth is displayed as a constant depth over grid squares with a 5m resolution, whereas in reality depths may vary within a given grid square.

No post-processing of the flood extent and depth map datasets has been undertaken to remove small areas of flooding that are remote and isolated, small islands within the flooded area, etc. Local factors such as flood defence schemes, structures in or around river channels (e.g. bridges), buildings and other local influences, which might affect coastal flooding, have not been accounted for.

Detailed explanations of the methods of derivation, data used, etc. is provided in the NCFHM 2021 Flood Mapping Methodology Report. Users of the maps should familiarise themselves fully with the contents of this report in advance of the use of the maps.

Purpose: The data has been developed to inform a national assessment of flood risk that in turn will inform a review of the Preliminary Flood Risk Assessment required to comply with the requirements of the European Communities (Assessment and Management of Flood Risks) Regulations 2010 to 2015 (the “Regulations”) (implementing Directive 2007/60/EC) for the purposes of establishing a framework for the assessment and management of flood risks, aiming at the reduction of adverse consequences for human health, the environment, cultural heritage and economic activity associated with floods....

Introduction

The Strategic Flood Map (Coastal) map service is a multi layered predictive flood mapping product providing a strategic overview of areas across Northern Ireland that could be affected by coastal (or sea) flooding. The Strategic Flood Map (Coastal) includes the following layers of information for both present day and climate change epochs: • Floods with a medium probability

Purpose of the data The dataset has been designed to raise awareness among the public, Government Departments, local authorities and other organisations of the likelihood of coastal flooding, thus supporting a more proactive and co-operative approach to flood risk management. By being aware of the land estimated to be at risk of flooding, authorities can develop strategies to better manage flood risk through their planning, flood prevention, and emergency planning functions.

Data Coverage Around the coast of Northern Ireland.

Data Format

OGC (Open Geospatial Consortium) compliant Web Mapping Service in WGS 1984 projection, accessible via secure website (requires authentication by user specific username and password).

Data content

Extreme Sea Level Strategic Coastal Floodplain o Coastline Strategic Coastal Floodplain (Present Day) o Medium Probability Floods (0.5% AEP) Strategic Coastal Floodplain (Climate Change 2030) o Medium Probability Floods (0.5% AEP)

AEP is Annual Exceedance Probability e.g. the 0.5% AEP flood extent shows areas of land with an annual probability of flooding of 0.5% (or 1 in 200 chance) in any year.

OPW FRS Benefiting Areas. Published by Office of Public Works. Available under the license Creative Commons Attribution 4.0 (CC-BY-4.0).Abstract: The Office of Public Works (OPW) is responsible for leading and co-ordinating the implementation of localised flood relief schemes to provide flood protection for cities, towns and villages, either directly or in association with relevant Local Authorities. This data outlines the areas benefiting from such flood relief schemes, the date of completion, the design standard and any human intervention that is required. A Benefitting Area is defined as the area that benefits from the implementation of the measures within an Option or Scheme, including improvements to conveyance such as channel widening or deepening, and culvert upgrades.

The OPW has an agreed Memorandum of Understanding (MOU) with Insurance Ireland, the representative body for insurance companies in Ireland. The MOU has a specific focus on agreeing the basis on which information can be provided to the insurance industry on areas benefitting from flood relief schemes completed by the OPW. Under the terms of the MOU, Insurance Ireland requires the OPW to provide it with data on OPW completed flood defence schemes which shows the design, extent and nature of the protections offered by these works. The OPW requires that insurers, who are party to the agreement, take full account of the information provided by the OPW when assessing exposure to flood risk for private dwellings and small businesses.

Lineage: Fluvial and coastal flood maps are developed using hydrodynamic modelling, based on calculated design river flows and extreme sea levels, surveyed channel cross-sections, in-bank / bank-side / coastal structures, Digital Terrain Models, and other relevant datasets (e.g. land use, data on past floods for model calibration, etc.). Typically, these models are run as undefended and defended scenarios to establish the areas defended or benefitting from a Flood Relief Scheme. However, the process may vary for particular schemes or maps and the Technical Hydrology and Hydraulics Reports for each Flood Relief Scheme sets out further technical details on the derivation of the flood maps and associated data.

June 2025 Clare River (Claregalway) Flood Relief Scheme data added.

Purpose: The data has been developed to inform the implementation of Flood Relief Schemes (FRS) to provide flood protection for cities, towns and villages and to describe the FRS characteristics and benefits. This includes a planned programme of prioritised, feasible works in accordance with the National Flood Risk Policy (2004) and to achieve the objectives of the Flood Risk Management Plans developed under the European Communities (Assessment and Management of Flood Risks) Regulations 2010 to 2015 (the “Regulations”) (implementing Directive 2007/60/EC)....

In response to the serious flooding of winter 2015/2016 specifically related to turloughs, the Programme for a Partnership Government (2016) stated that resources would be provided for "studies into individual problematic (prone to flooding) Turlough systems, if requested by a local authority or another relevant State agency". Geological Survey Ireland (GSI), a division of the Department of the Environment, Climate and Communications (DECC), and the leading national authority on groundwater science, delivered on this commitment by initiating a new three-year project (GWFlood) to investigate the drivers and extent of karst groundwater flooding in Ireland. The remit of this project was to advance understanding of karst groundwater flooding in Ireland, address the deficit of data available, and enable local and national authorities to make scientifically informed decisions regarding groundwater flood risk management in karst areas. To achieve this, the GSI in collaboration with Trinity College Dublin (TCD) initially and later with the Institute of Technology Carlow (ITC), developed a monitoring, mapping and modelling programme to address the knowledge gap regarding karst groundwater systems. This report describes the implementation of a turlough monitoring network and the methodology used to produce the historic and predictive groundwater flood maps.

Abstract: This dataset provides the coordinate points of the 60 forecast location points for Period 10 of the Tidal and Storm Surge Forecasting Service for the Coast of Ireland. The coordinates are provided in the following coordinate reference systems ; Irish Grid (ING); Irish Transverse Mercator (ITM); World Geodetic System 1984 (WGS 84). The Tidal and Storm Surge Forecasting Service is intended to provide information for Local Authorities, and other relevant stakeholders, to enable them to make informed decisions on the management of coastal flood risk. Three forecasts are produced daily, two morning forecasts looking 72 and 144 hours ahead and an evening forecast looking 72 hours ahead. The locations of the forecast points are intended to give good geographic coverage of all areas of the Irish coastline, whilst ensuring adequate coverage in densely populated areas which may potentially be at risk from coastal flooding.

Lineage: This data provides the coordinate points of the 60 forecast location points for Period 10 of the Tidal and Storm Surge Forecasting Service for the Coast of Ireland. Period 10 covers the period from 2017 to 2022. Previous versions of this data exist for periods 1-9 and the number and locations of the forecast points have been updated based on model developments and coverage needs since the initial development in 2009.

Purpose: The Tidal and Storm Surge Forecasting Service for the Coast of Ireland is intended to provide information for Local Authorities and other relevant stakeholders to enable them to make informed decisions on the management of coastal flood risk. Three forecasts are produced daily, two morning forecasts looking 72 and 144 hours ahead and an evening forecast looking 72 hours ahead. Forecasts are provided at 60 forecasting points, 18 National Points around the coast of Ireland and five more detailed local forecasting areas at Dundalk Bay, Wexford Harbour, Cork Harbour, Shannon Estuary and Galway Bay.

Abstract: This dataset represents the baseline position of the coastline in 2000 in areas considered to be vulnerable to erosion. Lineage: An erosion ‘baseline’ was derived from the visible vegetation line shown on the Ordnance Survey Ireland (OSi) year 2000 aerial photography, or where appropriate, the cliff top line, and this was used as the basis for generating the 2030 and 2050 erosion maps. Purpose: This data provides information required to inform policy in the management of risks associated with coastal flooding and coastal erosion. This is particularly relevant for local authorities in relation to the proper planning and development of coastal areas. The Irish Coastal Protection Strategy Study (ICPSS) is a national study that was commissioned in 2003 with the objective of providing information to support decision making about how best to manage risks associated with coastal flooding and coastal erosion. The Study was completed in 2013 and provides strategic current scenario and future scenario (up to 2100) coastal flood hazard maps and strategic coastal erosion maps for the national coastline.

Contains five Environment Agency Coastal Flood Boundaries: Extreme Sea Levels, Extreme Sea Levels Estuary, Gauge Data, Estuary Intervals and Surge Shapes. Full description has been given below for the Extreme Sea Levels layer and the Extreme Sea Levels Estuary layer. Links are provided to the remaining three layers. Extreme Sea levels:This metadata record is for AfA product AfA 010. Extreme Sea Level values is part of Coastal Design/Extreme Sea Levels,a GIS dataset and supporting information providing design / extreme sea level and typical surge information around the coastline of the UK, including England, Wales, Scotland, Northern Ireland, Isle of Man and Jersey. The information is relevant under present day (year 2018) conditions and does not account for future changes due to climate change, such as sea level rise. This is a specialist dataset which informs on work commenced around the coast ranging from coastal flood modelling, scheme design, strategic planning and flood risk assessments.Extreme Sea Level values describes the extreme sea levels for 16 different annual probabilities of exceedance. Confidence levels relating to the 5% and 95% lower and upper bounds of confidence are included. Mean High Water Spring (MHWS) and Highest Astronomical Tide (HAT) predicted tide levels are also included in the dataset for some sites but may not be used for navigational purposes.This 2018 update to the Coastal Design Sea Levels dataset was carried out in partnership for the UK Coastal Flood Forecasting partnership, which includes the Environment Agency (EA), Scottish Environment Protection Agency (SEPA), Natural Resources Wales (NRW) and the Department for Infrastructure Northern Ireland (DfINI).Extreme Sea Levels Estuary:This metadata record is for AfA product AfA 010. Extreme Sea Levels Estuary values is part of Coastal Design/Extreme Sea Levels,a GIS dataset and supporting information providing design / extreme sea level and typical surge information around the coastline of the UK, including England, Wales, Scotland, Northern Ireland, Isle of Man and Jersey. The information is relevant under present day (year 2018) conditions and does not account for future changes due to climate change, such as sea level rise. This is a specialist dataset which informs on work commenced around the coast ranging from coastal flood modelling, scheme design, strategic planning and flood risk assessments.Extreme Sea Level values describes the extreme sea levels for 16 different annual probabilities of exceedance. Confidence levels relating to the 5% and 95% lower and upper bounds of confidence are included. Mean High Water Spring (MHWS) and Highest Astronomical Tide (HAT) predicted tide levels are also included in the dataset for some sites but may not be used for navigational purposes. This dataset provides level this level information for sites in estuaries, tidal rivers and harbours. Levels for open coastal areas are provided separately in Extreme Sea Levels.This 2018 update to the Coastal Design Sea Levels dataset was carried out in partnership for the UK Coastal Flood Forecasting partnership, which includes the Environment Agency (EA), Scottish Environment Protection Agency (SEPA), Natural Resources Wales (NRW) and the Department for Infrastructure Northern Ireland (DfINI).Gauge Data: https://environment.data.gov.uk/arcgis/rest/services/EA/CoastalDesignSeaLevels/MapServer/2Surge Shape data: https://environment.data.gov.uk/arcgis/rest/services/EA/CoastalDesignSeaLevels/MapServer/4Estuary intervals: https://environment.data.gov.uk/arcgis/rest/services/EA/CoastalDesignSeaLevels/MapServer/3

The 'Climate Just' Map Tool shows the geography of England’s vulnerability to climate change at a neighbourhood scale.

The Climate Just Map Tool shows which places may be most disadvantaged through climate impacts. It aims to raise awareness about how social vulnerability combined with exposure to hazards, like flooding and heat, may lead to uneven impacts in different neighbourhoods, causing climate disadvantage.

Climate Just Map Tool includes maps on:

• Flooding (river/coastal and surface water)
• Heat
• Fuel poverty.

The flood and heat analysis for England is based on an assessment of social vulnerability in 2011 carried out by the University of Manchester. This has been combined with national datasets on exposure to flooding, using Environment Agency data, and exposure to heat, using UKCP09 data.

Data is available at Middle Super Output Area (MSOA) level across England. Summaries of numbers of MSOAs are shown in the file named Climate Just-LA_summaries_vulnerability_disadvantage_Dec2014.xls

Indicators include:

Climate Just-Flood disadvantage_2011_Dec2014.xlsx

Fluvial flood disadvantage index
Pluvial flood disadvantage index (1 in 30 years)
Pluvial flood disadvantage index (1 in 100 years)
Pluvial flood disadvantage index (1 in 1000 years)

Climate Just-Flood_hazard_exposure_2011_Dec2014.xlsx

Percentage of area at moderate and significant risk of fluvial flooding
Percentage of area at risk of surface water flooding (1 in 30 years)
Percentage of area at risk of surface water flooding (1 in 100 years)
Percentage of area at risk of surface water flooding (1 in 1000 years)

Climate Just-SSVI_indices_2011_Dec2014.xlsx

Sensitivity - flood and heat
Ability to prepare - flood
Ability to respond - flood
Ability to recover - flood
Enhanced exposure - flood
Ability to prepare - heat
Ability to respond - heat
Ability to recover - heat
Enhanced exposure - heat
Socio-spatial vulnerability index - flood
Socio-spatial vulnerability index - heat

Climate Just-SSVI_indicators_2011_Dec2014.xlsx

% children < 5 years old
% people > 75 years old
% people with long term ill-health/disability (activities limited a little or a lot)
% households with at least one person with long term ill-health/disability (activities limited a little or a lot)
% unemployed
% in low income occupations (routine & semi-routine)
% long term unemployed / never worked
% households with no adults in employment and dependent children
Average weekly household net income estimate (equivalised after housing costs) (Pounds)
% all pensioner households
% households rented from social landlords
% households rented from private landlords
% born outside UK and Ireland
Flood experience (% area associated with past events)
Insurance availability (% area with 1 in 75 chance of flooding)
% people with % unemployed
% in low income occupations (routine & semi-routine)
% long term unemployed / never worked
% households with no adults in employment and dependent children
Average weekly household net income estimate (equivalised after housing costs) (Pounds)
% all pensioner households
% born outside UK and Ireland
Flood experience (% area associated with past events)
Insurance availability (% area with 1 in 75 chance of flooding)
% single pensioner households
% lone parent household with dependent children
% people who do not provide unpaid care
% disabled (activities limited a lot)
% households with no car
Crime score (IMD)
% area not road
Density of retail units (count /km2)
% change in number of local VAT-based units
% people with % not home workers
% unemployed
% in low income occupations (routine & semi-routine)
% long term unemployed / never worked
% households with no adults in employment and dependent children
Average weekly household net income estimate (Pounds)
% all pensioner households
% born outside UK and Ireland
Insurance availability (% area with 1 in 75 chance of flooding)
% single pensioner households
% lone parent household with dependent children
% people who do not provide unpaid care
% disabled (activities limited a lot)
% households with no car
Travel time to nearest GP by walk/public transport (mins - representative time)
% of at risk population (no car) outside of 15 minutes by walk/public transport to nearest GP
Number of GPs within 15 minutes by walk/public transport
Number of GPs within 15 minutes by car
Travel time to nearest hospital by walk/public transport (mins - representative time)
Travel time to nearest hospital by car (mins - representative time)
% of at risk population outside of 30 minutes by walk/PT to nearest hospital
Number of hospitals within 30 minutes by walk/public transport
Number of hospitals within 30 minutes by car
% people with % not home workers
Change in median house price 2004-09 (Pounds)
% area not green space
Area of domestic buildings per area of domestic gardens (m2 per m2)
% area not blue space
Distance to coast (m)
Elevation (m)
% households with the lowest floor level: Basement or semi-basement
% households with the lowest floor level: ground floor
% households with the lowest floor level: fifth floor or higher

The European Environment Agency, as lead authority under the Copernicus Land Monitoring Service, co-ordinate the development of high resolution “local component” or “hot spot monitoring” datasets. Comparable data is produced across Europe using earth observation methods developed in partnership with private industry. The Environmental Protection Agency, as members of the European network EIONET, provides data quality assessments and disseminates the data for Ireland.

The Riparian Zones 2012 Green Linear Elements (GLE) dataset aims to map ecologically significant, structural landscape elements which act as important dispersion vectors of biodiversity. Riparian zones represent transitional areas occurring between land and freshwater ecosystems, characterised by distinctive hydrology, soil and biotic conditions and strongly influenced by the stream water. They provide a wide range of riparian functions (e.g. chemical filtration, flood control, bank stabilization, aquatic life and riparian wildlife support, etc.) and ecosystem services.

Green Linear Elements within the riparian zone comprise hedgerows and lines of trees and offer a wide range of ecosystem services, they are linked to both landscape richness and fragmentation of habitats, with a direct potential for restoration and protection. The GLE product aims to provides reliable and detailed geospatial information on the occurrence and spatial distribution of small linear vegetation features such as hedgerows, scrub and tree rows. Like the Riparian Land Use Land Cover dataset it provides data for areas identified within riparian areas that lie within a dynamic buffer of a Strahler Level 3 Rivers and above. Some further context is provided in this paper here.

Abstract: The Office of Public Works (OPW) is responsible for leading and co-ordinating the implementation of localised flood relief schemes to provide flood protection for cities, towns and villages, either directly or in association with relevant Local Authorities. This data outlines the areas benefiting from such flood relief schemes, the date of completion, the design standard and any human intervention that is required. A Benefitting Area is defined as the area that benefits from the implementation of the measures within an Option or Scheme, including improvements to conveyance such as channel widening or deepening, and culvert upgrades. The OPW has an agreed Memorandum of Understanding (MOU) with Insurance Ireland, the representative body for insurance companies in Ireland. The MOU has a specific focus on agreeing the basis on which information can be provided to the insurance industry on areas benefitting from flood relief schemes completed by the OPW. Under the terms of the MOU, Insurance Ireland requires the OPW to provide it with data on OPW completed flood defence schemes which shows the design, extent and nature of the protections offered by these works. The OPW requires that insurers, who are party to the agreement, take full account of the information provided by the OPW when assessing exposure to flood risk for private dwellings and small businesses. Lineage: Fluvial and coastal flood maps are developed using hydrodynamic modelling, based on calculated design river flows and extreme sea levels, surveyed channel cross-sections, in-bank / bank-side / coastal structures, Digital Terrain Models, and other relevant datasets (e.g. land use, data on past floods for model calibration, etc.). Typically, these models are run as undefended and defended scenarios to establish the areas defended or benefitting from a Flood Relief Scheme. However, the process may vary for particular schemes or maps and the Technical Hydrology and Hydraulics Reports for each Flood Relief Scheme sets out further technical details on the derivation of the flood maps and associated data. June 2025 Clare River (Claregalway) Flood Relief Scheme data added. Purpose: The data has been developed to inform the implementation of Flood Relief Schemes (FRS) to provide flood protection for cities, towns and villages and to describe the FRS characteristics and benefits. This includes a planned programme of prioritised, feasible works in accordance with the National Flood Risk Policy (2004) and to achieve the objectives of the Flood Risk Management Plans developed under the European Communities (Assessment and Management of Flood Risks) Regulations 2010 to 2015 (the “Regulations”) (implementing Directive 2007/60/EC).

Abstract: This dataset represents the future likely position of the coastline in 2050 in areas considered to be vulnerable to erosion. Lineage: A comparison of the best available current and historical mapping and aerial photography was used to estimate the annual rate of change in the coastline position and hence to predict the likely future position of the coastline in 2050. The rate of coastline change (annual erosion rate) for future years was assumed to be the same as in the past. An erosion ‘baseline’ was derived from the visible vegetation line shown on the Ordnance Survey Ireland (OSi) year 2000 aerial photography, or where appropriate, the cliff top line, and this was used as the basis for generating the 2050 erosion maps. The erosion maps have been produced for existing conditions only and do not include for projected future changes in climate such as sea level rise, increased storm frequency or associated variations in erosion rates. The ICPSS erosion hazard mapping is for strategic purposes, and minor or local features may not have been included in their preparation. Therefore, the maps should not be used to assess the erosion hazard and risk associated with individual properties or point locations, or to replace a detailed local erosion hazard and risk assessment. It was not possible to eliminate the effect of existing coastal defence structures from the erosion hazard and risk assessment. Consequently, there will be areas where no erosion line is shown that are at risk from erosion, should present defences fail or not be maintained in the future. Equally, there may be an erosion line shown in areas that are now adequately defended by coastal protection structure that were introduced during or after the assessment period. Purpose: This data provides information required to inform policy in the management of risks associated with coastal flooding and coastal erosion. This is particularly relevant for local authorities in relation to the proper planning and development of coastal areas. The Irish Coastal Protection Strategy Study (ICPSS) is a national study that was commissioned in 2003 with the objective of providing information to support decision making about how best to manage risks associated with coastal flooding and coastal erosion. The Study was completed in 2013 and provides strategic current scenario and future scenario (up to 2100) coastal flood hazard maps and strategic coastal erosion maps for the national coastline.

2050 Erosion Line (ICPSS 2010 - 2014) - Current Scenario. Published by Office of Public Works. Available under the license Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 (cc-by-nc-nd).Abstract: This dataset represents the future likely position of the coastline in 2050 in areas considered to be vulnerable to erosion.

Lineage: A comparison of the best available current and historical mapping and aerial photography was used to estimate the annual rate of change in the coastline position and hence to predict the likely future position of the coastline in 2050. The rate of coastline change (annual erosion rate) for future years was assumed to be the same as in the past.

An erosion ‘baseline’ was derived from the visible vegetation line shown on the Ordnance Survey Ireland (OSi) year 2000 aerial photography, or where appropriate, the cliff top line, and this was used as the basis for generating the 2050 erosion maps.

The erosion maps have been produced for existing conditions only and do not include for projected future changes in climate such as sea level rise, increased storm frequency or associated variations in erosion rates.

The ICPSS erosion hazard mapping is for strategic purposes, and minor or local features may not have been included in their preparation. Therefore, the maps should not be used to assess the erosion hazard and risk associated with individual properties or point locations, or to replace a detailed local erosion hazard and risk assessment. It was not possible to eliminate the effect of existing coastal defence structures from the erosion hazard and risk assessment. Consequently, there will be areas where no erosion line is shown that are at risk from erosion, should present defences fail or not be maintained in the future. Equally, there may be an erosion line shown in areas that are now adequately defended by coastal protection structure that were introduced during or after the assessment period.

Purpose: This data provides information required to inform policy in the management of risks associated with coastal flooding and coastal erosion. This is particularly relevant for local authorities in relation to the proper planning and development of coastal areas. The Irish Coastal Protection Strategy Study (ICPSS) is a national study that was commissioned in 2003 with the objective of providing information to support decision making about how best to manage risks associated with coastal flooding and coastal erosion. The Study was completed in 2013 and provides strategic current scenario and future scenario (up to 2100) coastal flood hazard maps and strategic coastal erosion maps for the national coastline....

Abstract: This dataset represents the baseline position of the coastline in 2000 in areas considered to be vulnerable to erosion. Lineage: An erosion ‘baseline’ was derived from the visible vegetation line shown on the Ordnance Survey Ireland (OSi) year 2000 aerial photography, or where appropriate, the cliff top line, and this was used as the basis for generating the 2030 and 2050 erosion maps. Purpose: This data provides information required to inform policy in the management of risks associated with coastal flooding and coastal erosion. This is particularly relevant for local authorities in relation to the proper planning and development of coastal areas. The Irish Coastal Protection Strategy Study (ICPSS) is a national study that was commissioned in 2003 with the objective of providing information to support decision making about how best to manage risks associated with coastal flooding and coastal erosion. The Study was completed in 2013 and provides strategic current scenario and future scenario (up to 2100) coastal flood hazard maps and strategic coastal erosion maps for the national coastline.

2000 Vegetation Line (ICPSS 2010-2014 Baseline). Published by Office of Public Works. Available under the license Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 (cc-by-nc-nd).Abstract: This dataset represents the baseline position of the coastline in 2000 in areas considered to be vulnerable to erosion.

Lineage: An erosion ‘baseline’ was derived from the visible vegetation line shown on the Ordnance Survey Ireland (OSi) year 2000 aerial photography, or where appropriate, the cliff top line, and this was used as the basis for generating the 2030 and 2050 erosion maps.

Purpose: This data provides information required to inform policy in the management of risks associated with coastal flooding and coastal erosion. This is particularly relevant for local authorities in relation to the proper planning and development of coastal areas. The Irish Coastal Protection Strategy Study (ICPSS) is a national study that was commissioned in 2003 with the objective of providing information to support decision making about how best to manage risks associated with coastal flooding and coastal erosion. The Study was completed in 2013 and provides strategic current scenario and future scenario (up to 2100) coastal flood hazard maps and strategic coastal erosion maps for the national coastline....