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High Water Mark - National Water Marks - Ungeneralised - 2024

Published by: Tailte Éireann
Category: Government
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The High Water Mark digital dataset is derived from relevant 6 inch and 25 inch Ordnance Maps. The alterations are in accordance with the Boundary Survey Acts Ireland, approved by the Chief Boundary Surveyor and signed off in Privy Council Orders. The dataset also includes changes to HWM brought about by subsequent Maritime Orders. Currently under review. This dataset is provided by Tailte Éireann.

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Resource: Feature Collection

URL: https://data-osi.opendata.arcgis.com/api/download/v1/items/3c9d84ce76c1498d97d8b9a580a365e3/featureCollection?layers=0

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Additional Information

Field Value
Data last updated 22 August 2025
Metadata last updated 22 August 2025
Created 22 August 2025
Format TXT
License Creative Commons Attribution 4.0
Access urlhttps://data-osi.opendata.arcgis.com/api/download/v1/items/3c9d84ce76c1498d97d8b9a580a365e3/featureCollection?layers=0
Download urlhttps://data-osi.opendata.arcgis.com/api/download/v1/items/3c9d84ce76c1498d97d8b9a580a365e3/featureCollection?layers=0
Has viewsTrue
Idc0f49b7a-6693-44c8-bf6f-7b844b5d138d
Mimetypetext/plain
Package idf72809e4-45bc-43dc-9e73-59bba90a5d94
Position6
Stateactive
Superset Dataset
Description
High Value Dataset (HVD) Resource No
Applicable Legislation
    API response formats
      API type
      API access url