​
Geological Survey Ireland maintains online datasets of subsoils (Quaternary) mapping that are reliable and accessible. We would encourage you to use these data which can be found here, under the ‘Geology’ tab.

​

​
Geological Survey Ireland continues to populate and develop our national geotechnical database and viewer with site investigation data submitted voluntarily by industry. The current database holding is over 7500 reports with 134,000 boreholes; 31,000 of which are digitised which can be accessed through downloads from our Geotechnical Map Viewer. We would encourage the use of this database as part of any baseline geological assessment of the proposed development as it can provide invaluable baseline data for the region or vicinity of proposed development areas. Selected subsets of the data can also be produced for specific projects upon request. This information may be beneficial and cost saving for any site-specific investigations that may be designed as part of the project.

​

​These data are of particular use for developments were baseline studies for large areas are being undertaken such as route options, regional constraints studies and so on.

​​Our 3D models can help stakeholders visualize, understand and characterise geology, for deposit and resource mapping, for flooding and for urban geology applications including basement impact assessment, Sustainable Drainage Systems (SuDS), and subsurface management. Our 3D models offer a key element of geotechnical risk management by identifying areas requiring further site investigation.