Flood Risk Assessment in Limerick
Expert flood risk assessments for planning applications throughout County Limerick. From the Shannon corridor through Limerick City to the estuary and rural catchments, we've completed FRAs for residential, commercial, and agricultural developments across the county.
Get a Quote or call 087 417 3832 or WhatsAppIf we can’t answer, please leave a message or send a WhatsApp — we’ll get back to you.Do I need a Flood Risk Assessment for planning in Limerick?
Yes, if your site is in or near Flood Zone A or B, or Limerick City and County Council has requested flood risk information at Further Information stage. The Limerick Development Plan 2022–2028 and its Strategic Flood Risk Assessment (Volume 4) apply the 2009 Planning System and Flood Risk Management Guidelines, so applications in or near flood zones need a site-specific FRA proportionate to the risk. In Limerick that often means assessing combined tidal and river flooding on the Shannon, tributary flooding on the Maigue, Deel and Mulkear, and karst groundwater flooding.
Flood Risk Assessment for Limerick Planning Applications
If you're submitting a planning application to Limerick City and County Council and your site is in or near a flood zone, you'll need a Flood Risk Assessment that satisfies the requirements of the Limerick Development Plan 2022-2028 and the Planning System and Flood Risk Management Guidelines.
Limerick has some of Ireland's most significant flood risk, dominated by the River Shannon - the country's longest river. The city itself sits at a critical point where the Shannon transitions from freshwater to tidal estuary, creating complex flood dynamics. Tidal flooding in the winter of 2013/14 and record groundwater flooding in the winter of 2015/16 highlighted the county's vulnerability, leading to significant flood relief schemes and heightened scrutiny of development in flood-prone areas.
- River Shannon corridor (Limerick City, Castleconnell, Montpelier)
- Shannon Estuary tidal flooding (Foynes, Askeaton, Pallaskenry)
- River Maigue catchment (Adare, Croom, Bruree)
- River Mulkear (Annacotty, Newport area)
- River Deel (Newcastle West, Rathkeale)
- Urban drainage in Limerick City suburbs
Shannon Flood Risk
The River Shannon presents unique challenges for flood risk assessment in Limerick. The tidal influence extends well upstream into the city, meaning sites can be affected by both fluvial (river) and tidal flooding - sometimes simultaneously. The extensive Shannon CFRAM study provides detailed flood mapping, but many sites require careful analysis of both the 1% AEP fluvial and 0.5% AEP tidal scenarios, plus their combined effects.
For Shannon-adjacent sites, we extract design flood levels from OPW modelling data and assess how proposed development levels compare against both fluvial and tidal design floods with appropriate climate change allowances.
What's Included
Every FRA we complete for Limerick sites includes:
Stage 1, 2 & 3 Assessments
Proper methodology using OPW flood mapping and modelling data. Where data is limited or outdated, we undertake bespoke hydraulic modelling (1D/2D HEC-RAS).
Tidal/Fluvial Analysis
For Shannon-influenced sites: combined assessment of river and tidal flood risk with appropriate joint probability analysis.
FFL Comparison
Your proposed finished floor levels compared against design flood levels plus freeboard.
Development Plan Compliance
Explicit demonstration of compliance with Limerick Development Plan flood risk policies.
Further Information Requests
Received an FI request from Limerick City and County Council asking for flood risk information? We regularly handle urgent FI responses for Limerick sites. Typical turnaround is 7–10 working days - often faster for straightforward sites.
Key Documents for Limerick Flood Risk Assessments
Every FRA we prepare for a Limerick site is assessed against the development plan and Strategic Flood Risk Assessment (SFRA) of the relevant planning authority, the national flood risk guidelines, and the latest OPW flood data:
Limerick City and County Council
- Limerick Development Plan 2022–2028 (as varied)
- Limerick Development Plan 2022–2028 – Volume 4: Strategic Flood Risk Assessment
National guidance and flood data
- The Planning System and Flood Risk Management – Guidelines for Planning Authorities (DoEHLG & OPW, November 2009)
- The Planning System and Flood Risk Management – Technical Appendices (November 2009)
- Circular PL 2/2014 – Flooding Guidelines (revised Section 5.28 on minor development)
- OPW Flood Maps – floodinfo.ie (CFRAM, NIFM and NCFHM flood mapping)
- Geological Survey Ireland – GWFlood groundwater flood maps (historic and predictive)
- Limerick City and County Council – King's Island Flood Relief Scheme
Links open the official source documents. Development plans are periodically varied, so we always check the current version and any variation SFRA when preparing your report.
Limerick Flood Risk Assessment FAQs
Why is flood risk in Limerick City so complex?
Because the Shannon is tidal through the city, sites can flood from the river, the tide, or both at once. The Limerick SFRA records that tidal overtopping in the winter of 2013/14 flooded around 300 homes, mainly in St. Mary's Park and King's Island. A Limerick city FRA should therefore consider the 1% AEP fluvial and 0.5% AEP tidal events and their combination, with climate change allowances.
Is the King's Island Flood Relief Scheme finished?
Limerick City and County Council reports that construction of the King's Island Flood Relief Scheme began in October 2024. Until a scheme is complete, and even afterwards, the 2009 Guidelines require flood zones to be mapped without the benefit of defences, so a site-specific FRA must still address residual risk.
Is groundwater flooding a risk in County Limerick?
In parts of the county, yes. The Limerick SFRA notes that the winter of 2015/16 produced the largest groundwater (karst) flood on record in most areas, and that event underpins Geological Survey Ireland's historic groundwater flood maps. We check the GSI GWFlood data for sites on karst limestone.
Can I get planning permission in Flood Zone A in Limerick?
Possibly. Under the 2009 Guidelines, highly vulnerable development such as housing in Flood Zone A must pass the Development Management Justification Test, and Limerick City and County Council will expect a site-specific FRA to show the development, its occupants and its access are safe without increasing flood risk elsewhere. Minor development such as small extensions, small-scale infill and changes of use is treated differently under Circular PL 2/2014: the Justification Test does not apply, but a commensurate flood risk assessment is still required.
How long does a Flood Risk Assessment take in Limerick?
Typically 7–10 working days from instruction for a Stage 2 assessment, and often faster for straightforward sites. If Limerick City and County Council has issued a Further Information request with a deadline, tell us when you get in touch and we will prioritise it. Stage 3 assessments with hydraulic modelling take longer and are scoped per site.
Need an FRA for a Limerick Site?
Send us your site address and we'll provide a fixed-price quote, typically within 24 hours.
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