Low Water Mark – National Water Marks

<div style='text-align:left;'><div><div><p style='font-size:12pt;'><span>The Low</span><span> </span><span>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.</span></p><p><span style='font-size:16px;'>This dataset is provided by Tailte Éireann . </span><br /></p></div></div></div>低潮位标记（Low Water Mark）数字数据集源自相关6英寸及25英寸比例尺军械测绘地图（Ordnance Maps）。其修订工作严格遵循《爱尔兰边界测绘法案》，经首席边界测绘师审核批准，并通过枢密院令正式签署生效。本数据集同时纳入后续海事命令所引发的高水位标记（High Water Mark，HWM）变更内容，当前该数据集尚处于审核阶段。 本数据集由Tailte Éireann提供。