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snippet: An aquifer is an underground body of water bearing rock or unconsolidated materials (gravel or sand) from which groundwater can be extracted in useful amounts. There are two main types of aquifer in Ireland – bedrock aquifers, and sand and gravel aquifers (<5%) . In bedrock aquifers the groundwater is stored in and travels through fractures, joints and other weaknesses in the rock. In sand and gravel aquifers groundwater is stored and flows between the sand and gravel grains. Different aquifers have differing abilities to store and transmit water. GSI aquifer categories can be used to define the relative value of aquifers in Ireland. GSI Aquifer classes are divided into three main groups based on their resource potential, and further subdivided based on the type of openings through which groundwater flows. There are nine aquifer categories in total.
summary: An aquifer is an underground body of water bearing rock or unconsolidated materials (gravel or sand) from which groundwater can be extracted in useful amounts. There are two main types of aquifer in Ireland – bedrock aquifers, and sand and gravel aquifers (<5%) . In bedrock aquifers the groundwater is stored in and travels through fractures, joints and other weaknesses in the rock. In sand and gravel aquifers groundwater is stored and flows between the sand and gravel grains. Different aquifers have differing abilities to store and transmit water. GSI aquifer categories can be used to define the relative value of aquifers in Ireland. GSI Aquifer classes are divided into three main groups based on their resource potential, and further subdivided based on the type of openings through which groundwater flows. There are nine aquifer categories in total.
accessInformation: Contains Irish Public Sector Data (Geological Survey) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence
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description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="font-size:10pt">This is a polygon dataset containing nine Bedrock Aquifer classes.</SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN /></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>1) Regionally Important Aquifers:</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Regionally important aquifers are capable of supplying regionally important abstractions (e.g. large public water supplies), or excellent yields (&gt;400 m3/d). Bedrock aquifer units generally have a continuous area of &gt;25 km2 and groundwater predominantly flows through fractures, fissures, joints or conduits. Regionally important sand/gravel aquifers are &gt;10 km2, and groundwater flows between the sand and gravel grains.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>This group is subdivided into the following types:</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Rk Regionally Important Karstified Bedrock Aquifer </SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Rf Regionally Important Fissured Bedrock Aquifer </SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Rg Regionally Important Sand/Gravel Aquifer</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Regionally important karstified aquifers may be further subdivided based on the whether groundwater flows mainly through conduits (Rkc) or more diffusely through solutionally-enlarged fissures (Rkd).</SPAN></SPAN></P><P /><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>2) Locally Important Aquifers:</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Locally important aquifers are capable of supplying locally important abstractions (e.g. smaller public water supplies, group schemes), or good yields (100-400 m3/d). In the bedrock aquifers, groundwater predominantly flows through fractures, fissures, joints or conduits. Locally important sand/gravel aquifers are typically &gt;1 km2, and groundwater flows between the sand and gravel grains.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>This group is subdivided into the following types:</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Lm Locally Important Bedrock Aquifer, Generally Moderately Productive </SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Ll Locally Important Bedrock Aquifer, Moderately Productive only in Local Zones </SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Lk Locally Important Karstified Bedrock Aquifer </SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Lg Locally Important Sand/Gravel Aquifer</SPAN></SPAN></P><P /><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>3) Poor Aquifers:</SPAN></SPAN></P><P /><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>These bedrock aquifers are capable of supplying small abstractions (e.g. domestic supplies, small group schemes), or moderate to low yields (&lt;100 m3/d). Groundwater predominantly flows through a limited and poorly-connected network of fractures, fissures and joints.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>This group is subdivided into the following types:</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Pl Poor Bedrock Aquifer, Generally Unproductive except in Local Zones </SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN><SPAN>Pu Poor Bedrock Aquifer, Generally Unproductive</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN /></P></DIV></DIV></DIV>
licenseInfo: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Data that is produced directly by the Geological Survey Ireland (GSI) is free for use under the conditions of Creative Commons Attribution 4.0 International license. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>https://creativecommons.org/licenses/by/4.0/legalcode</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application. </SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>Please use this specific attribution statement: "Contains Irish Public Sector Data (Geological Survey) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence". </SPAN></P></DIV></DIV></DIV>
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title: IRL_27936500_ATL_REF.GFRS.Aquifer_Bedrock
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tags: ["Bedrock","Aquifer","Rg","Lg","Water","Framework","Directive","WFD","Groundwater","GSI","Geological","Survey","Ireland","Geology","Hydrogeology"]
culture: en-US
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minScale: 150000000
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