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Service Description: Subsoil is the layer of soil under the topsoil and on top of the bedrock. The ease with which water can pass through the subsoil is known as the ‘permeability’.
The subsoil permeability affects how easily rainwater can soak down into the ground and fill up the groundwater resource (aquifer). An aquifer is a body of rock and/or sediment that holds groundwater.
The Subsoil Permeability map shows how permeable the subsoils are in Ireland. The map shows the subsoil permeability category at any point on the land surface as long as the subsoil is greater than 3 metres thick. There are three categories: ‘High’, ‘Moderate’ or ‘Low’.
Geologists map and record information on the subsoils above the bedrock. They find out how deep the subsoil is and how permeable it is. They use information from quarries, deep pits and from boreholes (a deep narrow round hole drilled in the ground).
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.
It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).
The Subsoil Permeability data are shown as polygons. Each polygon holds information on the Subsoil Permeability Code and the Subsoil Permeability Description.
Map Name: IE GSI Subsoil Permeability 40k Ireland (ROI) ITM
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Description: Subsoil is the layer of soil under the topsoil and on top of the bedrock. The ease with which water can pass through the subsoil is known as the ‘permeability’.The subsoil permeability affects how easily rainwater can soak down into the ground and fill up the groundwater resource (aquifer). An aquifer is a body of rock and/or sediment that holds groundwater.The Subsoil Permeability map shows how permeable the subsoils are in Ireland. The map shows the subsoil permeability category at any point on the land surface as long as the subsoil is greater than 3 metres thick. There are three categories: ‘High’, ‘Moderate’ or ‘Low’.Geologists map and record information on the subsoils above the bedrock. They find out how deep the subsoil is and how permeable it is. They use information from quarries, deep pits and from boreholes (a deep narrow round hole drilled in the ground).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.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The Subsoil Permeability data are shown as polygons. Each polygon holds information on the Subsoil Permeability Code and the Subsoil Permeability Description.
Service Item Id: 0f82ba87612045ccba28a2f202a01d52
Copyright Text: Geological Survey Ireland
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Document Info:
Title: IE GSI Subsoil Permeability 40k Ireland (ROI) ITM
Author:
Comments: Subsoil is the layer of soil under the topsoil and on top of the bedrock. The ease with which water can pass through the subsoil is known as the ‘permeability’.The subsoil permeability affects how easily rainwater can soak down into the ground and fill up the groundwater resource (aquifer). An aquifer is a body of rock and/or sediment that holds groundwater.The Subsoil Permeability map shows how permeable the subsoils are in Ireland. The map shows the subsoil permeability category at any point on the land surface as long as the subsoil is greater than 3 metres thick. There are three categories: ‘High’, ‘Moderate’ or ‘Low’.Geologists map and record information on the subsoils above the bedrock. They find out how deep the subsoil is and how permeable it is. They use information from quarries, deep pits and from boreholes (a deep narrow round hole drilled in the ground).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.It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).The Subsoil Permeability data are shown as polygons. Each polygon holds information on the Subsoil Permeability Code and the Subsoil Permeability Description.
Subject: Groundwater is the water that soaks into the ground from rain and can be stored beneath the ground. Groundwater is used to supply drinking water and needs to be protected. It is mainly protected by layers of subsoils, sands or peats. Knowing how easy it is for rainwater (which may contain pollutants) to soak down through the subsoils is important. The ease with which water can pass through the subsoils is known as the ‘permeability’.
Subsoil permeability along with the subsoil depth, tells us how well protected the groundwater is and how vulnerable the groundwater is to pollution. Knowing this helps people to plan and carry out activities on the land in a way that keeps our groundwater safe to drink.
The permeability of subsoil also affects how easily rainwater can soak down into the ground and fill up the groundwater resource (aquifer). An aquifer is a body of rock and/or sediment that holds groundwater. Subsoil permeability is used to create the groundwater recharge map which shows where different amounts of rainfall reach the stores of groundwater (aquifers) across the country. Knowing the location and amount of groundwater recharge is important. It helps us to identify groundwater sources which can be used to supply drinking water. It also helps us to manage the water supply sustainably. The recharge 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.
Category:
Keywords: Ireland,IE/GSI,Geology,hydrogeology,groundwater,Soil,Subsoil,Permeability
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