{ "culture": "en-IE", "name": "IE_GSI_Groundwater_Recharge_40K_IE26_ITM", "guid": "3E4C778A-5D6C-4363-82AB-874721A20973", "catalogPath": "", "snippet": "Groundwater is the water that soaks into the ground from rain and is stored beneath the ground. An aquifer is a body of rock and/or sediment that holds groundwater. The Groundwater Recharge map shows where different amounts of rainfall reach the stores of groundwater (the \u2018aquifers\u2019) across the country. \n\nKnowing the location and amount of groundwater recharge is important. It helps us to identify groundwater sources which can be used to supply drinking water. The recharge map also helps us to manage the water supply sustainably. The map can help us to understand where there might be too much groundwater being taken from the ground compared to what seeps down to replenish it. \n\nThe groundwater recharge map also helps us to understand where land drainage is poor and where most surface run-off will take place, as this is the opposite of where most rainwater will soak down.", "description": "

Groundwater is the water that soaks into the ground from rain and is stored beneath the ground. An aquifer is a body of rock and/or sediment that holds groundwater. The process of rain filling up an aquifer is called \u2018recharge\u2019. <\/span><\/span><\/p>

The Groundwater Recharge map shows the amount of rainfall which reaches the stores of groundwater (the \u2018aquifers\u2019) across Ireland. The amount of recharge was calculated over the period 1981-2010 and then averaged to give a yearly amount.<\/span><\/span><\/p>

Geological information is interpreted by hydrogeologists to create the map includes soil drainage, subsoil type, subsoil permeability, subsoil thickness, groundwater vulnerability and aquifers. The amount of rain falling on the land minus how much of that rain is taken up by plants is also a factor that determines how much groundwater recharge there is at a particular location. This is known as the \u2018effective rainfall\u2019.<\/span><\/span><\/p>

Different combinations of the geological factors give 24 hydrogeological scenarios. There is a \u2018recharge coefficient\u2019 for each scenario, which is the percentage of the \u2018effective rainfall\u2019 that may become groundwater recharge. Using ArcGIS software, the data are merged to create areas on a map to show the recharge. Please read the lineage for more detail.<\/span><\/span><\/p>

This map is to the scale 1:40,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 400m.<\/span><\/span><\/p>

It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas). The recharge data is shown as polygons. Each polygon holds information on:<\/span><\/p>

Average Recharge (mm/yr) - average annual recharge to the groundwater aquifer across that polygon<\/span><\/span><\/p>

Recharge Coefficient (%) \u2013 the proportion of effective rainfall that becomes groundwater<\/span><\/p>

Effective Rainfall (mm/yr) \u2013 the rainwater remaining after plants have taken up some of the rainfall<\/span><\/span><\/p>

Recharge Pre Cap (mm/yr) - effective rainfall x recharge coefficient, not limited by maximum recharge capacities<\/span><\/span><\/p>

Recharge Cap Apply \u2013 is there a maximum amount of recharge that the aquifer can accept? (Yes/ No)<\/span><\/span><\/p>

Recharge Maximum Capacity (mm/yr) \u2013 the maximum amount of recharge the aquifer can accept. Only applies to bedrock aquifers of category Ll, Pl, or Pu.<\/span><\/span><\/p>

Average Recharge Range (mm/yr) - Annual Recharge (mm) categorised into a range of values used to style the map. <\/span><\/span><\/p>

Hydrogeological Setting Code - determined by the combinations of different geological layers<\/span><\/span><\/p>

Hydrogeological Setting Description \u2013 the description of the main geological layers that combine to let different amounts of rainfall through to become groundwater<\/span><\/p>

Vulnerability Category \u2013 the code for the groundwater vulnerability<\/span><\/span><\/p>

Vulnerability Description \u2013 the groundwater vulnerability description<\/span><\/span><\/p>

Soil Drainage \u2013 whether the soil is well drained or poorly drained<\/span><\/p>

Subsoil Type (Quaternary Sediment Code) \u2013 the code for the subsoil type<\/span><\/span><\/p>

Subsoil Description (Quaternary Sediment Description) \u2013 description of the subsoil type<\/span><\/p>

Sand/Gravel Subsoil \u2013 whether the subsoil is sand/gravel or not<\/span><\/span><\/p>

Subsoil Permeability Code - the code for the permeability of the subsoil <\/span><\/span><\/p>

Subsoil Permeability Description \u2013 description of the subsoil permeability<\/span><\/p>

Sinking Stream \u2013 indicates the presence of a stream that sinks fully or partially into the ground. Derived from the Groundwater Vulnerability 40K mapping. <\/span><\/span><\/p>

Sand and Gravel Aquifer Category \u2013Sand and Gravel Aquifer Category from Groundwater Resources (Aquifers) 40K mapping<\/span><\/span><\/p>

Sand and Gravel Aquifer Description \u2013Sand and Gravel Aquifer Description from Groundwater Resources (Aquifers) 40K mapping<\/span><\/span><\/p>

Bedrock Aquifer Category \u2013Bedrock Aquifer Category from Groundwater Resources (Aquifers) 100K mapping<\/span><\/span><\/p>

Bedrock Aquifer Description \u2013Bedrock Aquifer Description from Groundwater Resources (Aquifers) 100K mapping<\/span><\/p>

Hydrostratigraphic Rock Unit Group Name\u2013 Rock Unit Groups that have hydrogeological significance<\/span><\/p>

County \u2013 Irish County<\/span><\/span><\/p>

<\/p><\/div><\/div><\/div>", "summary": "Groundwater is the water that soaks into the ground from rain and is stored beneath the ground. An aquifer is a body of rock and/or sediment that holds groundwater. The Groundwater Recharge map shows where different amounts of rainfall reach the stores of groundwater (the \u2018aquifers\u2019) across the country. \n\nKnowing the location and amount of groundwater recharge is important. It helps us to identify groundwater sources which can be used to supply drinking water. The recharge map also helps us to manage the water supply sustainably. The map can help us to understand where there might be too much groundwater being taken from the ground compared to what seeps down to replenish it. \n\nThe groundwater recharge map also helps us to understand where land drainage is poor and where most surface run-off will take place, as this is the opposite of where most rainwater will soak down.", "title": "IE GSI Groundwater Recharge 40K Ireland (ROI) ITM", "tags": [ "Ireland", "IE/GSI", "Geology", "Groundwater", "Recharge" ], "type": "Map Service", "typeKeywords": [ "Data", "Service", "Map Service", "ArcGIS Server" ], "thumbnail": "thumbnail/thumbnail.png", "url": "", "extent": [ [ -10.8790251226923, 51.4039756567101 ], [ -5.8783515590537, 55.3856294343066 ] ], "minScale": 0, "maxScale": 1.7976931348623157E308, "spatialReference": "IRENET95_Irish_Transverse_Mercator", "accessInformation": "Geological Survey Ireland", "licenseInfo": "

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>

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https://creativecommons.org/licenses/by/4.0/legalcode<\/span><\/span><\/a><\/p>

Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application.<\/span><\/span><\/p>

Please use this specific attribution statement: \"<\/span><\/span>Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence<\/span><\/span>\".<\/span><\/span><\/p>

In cases where it is not practical to use the statement users may include a URI or hyperlink to a resource that contains the required attribution statement.<\/span><\/p><\/div><\/div><\/div>" }