Appendices
Including SEA, AA and SFRA
Submission from the Office of Public Works (submission 140)
Issues / Recommendations / Observations
Chief Executive’s Response & Recommendation
or for making decisions on planning applications. Where more accurate predictive flood mapping is not available, they may indicate where flooding may be an issue. Irish Coastal Protection Strategy Study (ICPSS) The ICPSS maps are included with the PFRA in Table 3 of the SFRA and it is stated that “These indicative national coastal flood maps are included in the Draft PFRA Maps”. The PFRA flood maps are indicative mapping, while the ICPSS maps are strategic, predictive hazard mapping. It is recommended that the ICPSS mapping should be included separately in the list of flood zone data. It should be noted that the flood maps prepared under the ICPSS include maps for two potential future scenarios taking account of different degrees of climate impact. While future scenario mapping from the National CFRAM Programme have been included, the ICPSS future scenario maps have been omitted. GSI Datasets Maps have been produced for each settlement demonstrating the GSI ground-water data available, historical data and predictive mapping. No description of these datasets have been included in Table 2 Historical Flood Risk Indicators or Table 3 Predictive Flood Risk Indicators of the SFRA.
The SFRA will be updated to include the ICPSS mapping separately in the list of flood zone data. The future scenario mapping from the ICPSS will be included at a wider-City level in the SFRA Appendix. Recommendation: Update the SFRA to include the ICPSS mapping separately in the list of flood zone data, and include the future scenario mapping from the ICPSS at a wider- City level in the SFRA Appendix.
It is recommended to include a description of historical groundwater flooding in the SFRA, Tables 2 and 3. Recommendation: (i) Include the following description of historical groundwater flooding in the SFRA, Table 2: “Historic groundwater flood map: The historic groundwater flood map is a national-scale flood map presenting the maximum historic observed extent of karst groundwater flooding. The map is primarily based on the winter 2015/2016 flood event, which in most areas represented the largest groundwater flood event on record. The map
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