MARA GeoPortal
Explore a comprehensive collection of MARA’s data resources including Geographic Information System (GIS) layers, maps and downloadable datasets.
This section provides access to spatial data that includes MAC (Maritime Area Consent) and MUL (Maritime Usage Licences) determinations that may support policy, planning and decision-making functions.
Please Take Note (16th April 2026):
Tailte Eireann’s Ungeneralised 2026 High Water Mark dataset has been released.
A digitised representation of the HWM as defined by the CBS is available at https://arcg.is/1zSran1.
With immediate effect this dataset is to be used for all MAC and MUL applications submitted to MARA.