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Click on the Add Layer button to select from a long list of coastal and marine layers to view in the map. Select a layer name to see information about a layer, including metadata and downloadable GIS data if available.
Explore the other tabs for more options.
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 | Even seemingly strong sections of coastline, such as these cliffs on the Dingle Peninsula, are prone to erosion. | | Coastline | | | The coastline of Ireland is a complex environment where land meets sea. Its shape changes over time, influenced by currents, weather, erosion, and human impacts to name a few. |
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 | Information board at Silverstrand, Co. Galway, one of the sites at which bathing water quality is monitored annually. | | Bathing Water Quality (Rep. Ireland) | | | The legislation governing the quality of bathing waters for the 2013 season is set out in the Quality of Bathing Waters Regulations and amendments concerning the quality of bathing water. A total of 136 designated bathing areas were monitored during the bathing season, of which 122 are seawater and nine are freshwater bathing areas on lakes. |
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 | Portrush (Whiterocks), one of the sites at which bathing water quality is monitored annually. | | Bathing Water Quality (Northern Ireland) | | | The Northern Ireland Environment Agency checks the quality of bathing waters on an annual basis. 18 beaches are annually checked for their water quality. |
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 | Sea dunes located 20 nautical miles off the south coast of Co. Wexford are one example of seabed features. | | Bathymetry of Irish Waters: GEBCO Contours | | | The bathymetry around Ireland is diverse, with smooth, shallow sea floor close to the coast, and steep slopes of the continental margin further to the south and west. |
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 | Among details displayed in the OSI / OSNI 1:50,000 Webmap Series are names of channels, such as Bull's Mouth in Blacksod Bay, Co. Mayo. | | Ordnance Survey Basemaps | | | Ordnance Survey of Ireland and Northern Ireland provide base information such as towns, roads, counties and rivers for the Republic and Northern Ireland. In MIDA, the 1:450,000 scale basemap changes to the more detailed 1:50,000 scale basemap as you zoom in to coastal areas. |
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