Councils are currently carrying out Strategic Flood Risk Assessments of their functional areas as part a review of planning policy, mapping flood extents for 1 in 100 year floods (1% chance of flooding each year) and 1 in 1000 year floods (0.1% chance of flooding each year). Ring your planning department to find out whether one has been completed or one is currently being carried out as part of a Development Plan or Local Area Plan review process. If it’s done you should be able to check out the related maps and see if the property is within a flood zone.
The OPW are doing flood risk assessments for the major river basins, the Lee is done and a few others are underway, these are using very detailed survey datasets so are more robust and reliable but less extensive than the local authority ones. These will be done over the next several years to comply with an EU Floods Directive.
The OPW also have maps of flood incidents on their website but these are based on point data rather than polygon data and are of limited use. There was talk of the OPW using a model to generate a nationwide preliminary flood risk dataset based on topography, but not sure what stage this is at
Thanks a million folks. Plenty here to follow up - floodmaps.ie is already throwing up some interesting facts. I’ll ring the local planning dept. and an insurance company and see if I can get a more information.
This advice is not as flippant as it seems.
If you are west of the Shannon there are turloughs, underground rivers all over the place.
In winter they become overground lakes for a few weeks months, in very wet winters they become very large lakes. See Galway flooding 2009, much of this was due to overflow from turloughs
Check if there is an river nearby, wait for heavy rainfall, if near coast add in very high tide.
If east of the Shannon, in a flat plain like the curragh water from a nearby river can travel far once the banks have been breached.
If site is at the same level as or several feet below level of nearby river you might get wet.
Also try ringing an insurance company, see what quotes for flood insurance are like, if they refuse to offer it in that area make sure you are atop a large hill.
I like hills, good for exercise, tend to not get flooded