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. This dataset is currently under review.

Data Resources (6)

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ArcGIS Hub Dataset
ARCGIS GEOSERVICES REST API
ArcGIS GeoService
GEOJSON
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Contact Person OSI Data Contact
Contact Person Email custserv@osi.ie
Contact Person Telephone -
Theme Government
Date released 2022-01-14
Date updated 2022-02-10
Language English
Landing page https://data-osi.opendata.arcgis.com/maps/15a336fda76446b08ec30c9b2937e415_0

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