Abstract: This data shows the watercourses forming part of Drainage Districts. Drainage Districts were carried out by the Commissioners of Public Works under a number of drainage and navigation acts from 1842 to the 1930s to improve land for agriculture and to mitigate flooding. Channels and lakes were deepened and widened, weirs removed, embankments constructed, bridges replaced or modified and various other work was carried out. The purpose of the schemes was to improve land for agriculture, by lowering water levels during the growing season to reduce waterlogging on the land beside watercourses known as callows. Local authorities are charged with responsibility to maintain Drainage Districts. The Arterial Drainage Act, 1945 contains a number of provisions for the management of Drainage Districts in Part III and Part VIII of the act. The Act was amended on a number of occasions, e.g. to transpose EU Regulations and Directives such as the EIA, SEA, and Habitats Directives and the Aarhus Convention. Lineage: The original sources for the information displayed in this dataset were the maps and descriptive documents, known as the Award, which were created when these schemes were completed to describe the work carried out. These maps were digitised between 2001-2004 from Ordnance Survey of Ireland 1:10,560 six-inch raster data in Irish Grid. Distortion arises from the historic Cassini map projection used in the original maps. Scale along the central meridian and at right angles to it is accurate, but everywhere else, scale, and therefore mapped objects, are distorted in a north-to-south direction. The amount of distortion on the map increases with distance from the central meridian. In Ireland, the Cassini projection was applied on a county-by-county basis for six-inch mapping, with the central meridian passing through a point near the centre of the county. Therefore, distortion is most evident near county borders, and also in rivers, lakes and streams. Distortion and error inherent in the dataset are amplified during translation and re-projection using Irish Grid and Irish Transverse Mercator. Purpose: This data has been developed to support the maintenance of Drainage Districts carried out under a number of drainage and navigation acts from 1842 to the 1930s. This work was initially carried out by the Commissioners of Public Works to improve land for agricultural purposes. Local authorities are now charged with the responsibility to maintain the Drainage Districts. Maps and descriptive documents, known as the Award, were created when these schemes were completed to describe the work carried out.

This map shows drainage classes of soils across Ireland based on examination of the soil profile. Organic soils, comprising either peat or alluvium, are separated out from four drainage classes across mineral soils; well drained, imperfectly drained, poorly drained or very poorly drained. Made ground in urban areas is also illustrated.

For more information on this dataset please go to https://gis.epa.ie/geonetwork/srv/eng/catalog.search#/metadata/2cd0c5e9-83b2-49a9-8c3e-79675ffd18bfSIS SOIL:The new Irish Soil Information System concludes a 5 year programme, supported by the Irish Environmental Protection Agency (STRIVE Research Programme 2007-2013) and Teagasc, to develop a new 1:250,000 scale national soil map (https://soils.teagasc.ie). The Irish Soil Information System adopted a unique methodology combining digital soil mapping techniques with traditional soil survey application. Developing earlier work conducted by An Foras Talúntais, the project generated soil-landscape models for previously surveyed counties. These soil-landscape (‘soilscape’) models formed the basis for training statistical ‘inference engines’ for predicting soil mapping units, checked during field survey. 213 soil series are identified, each with differing characteristics, having contrasting environmental and agronomic responses. Properties were recorded in a database able to satisfy national and EU policy requirements. The Irish soil map and related soil property data will also serve public interest, providing the means to learn online about Irish soil resources. Use the Symbology layer file 'SOIL_SISNationalSoil.lyr' based on Value Field 'Association_Unit'. SIS SOIL DRAINAGE:In Ireland, soil drainage category is considered to have a predominant influence on soil processes (Schulte et al., 2012). The maritime climate of Ireland drives wet soil conditions, such that excess soil moisture in combination with heavy textured soils is considered a key constraint in relation to achieving productivity and environmental targets. Both soil moisture content and the rate at which water drains from the soil are critical indicators of soil physical quality and the overall functional capacity of soil. Therefore, a natural extension to the Irish Soil Information System included the development of an indicative soil drainage map for Ireland. The soil subgroup map was used to develop the indicative drainage map, based on diagnostic criteria relating to the subgroup categorization. Use the Symbology layer file 'SOIL_SISSoilDrainage.lyr' based on Value Field 'Drainage'. SIS SOIL DEPTH: Soil depth is a measure of the thickness of the soil cover and reflects the relationship between parent material and length of soil forming processes. Soil depth determines the potential rooting depth of plants and any restrictions within the soil that may hinder rooting depth. Plants derive nearly 80 per cent of their water needs from the upper part of the soil solum, i.e. where the root system is denser. The rooting depths depend on plant physiology, type of soil and water availability. Generally, vegetables (beans, tomatoes, potatoes, parsnip, carrots, leek, broccoli, etc.) are shallow rooted, about 50–60 cm; fruit trees and some other plants have medium rooting depths, 70–120 cm and other crops such as barley, wheat, oats, and maize may have deeper roots. Furthermore, rooting depths vary according to the age of the plants. The exact soil depth is difficult to define accurately due to its high variability across the landscape. The effective soil depth can be reduced by the presence of bedrock or impermeable layers. Use the Symbology layer file 'SOIL_SISSoilDepth.lyr' based on Valued Field 'Depth'. SIS SOIL TEXTURE:Soil texture is an important soil characteristic that influences processes such as water infiltration rates, rootability, gas exchanges, leaching, chemical activity, susceptibility to erosion and water holding capacity. The soil textural class is determined by the percentage of sand, silt, and clay. Soil texture also influences how much water is available to the plant; clay soils have a greater water holding capacity than sandy soils. Use the Symbology layer file 'SOIL_SISSoilTexture.lyr' based on Value Field 'Texture'. SIS SOIL SOC:In the previous national soil survey conducted by An Foras Taluntais, 14 counties were described in detail with soil profile descriptions provided for the representative soil series found within a county. Soil samples were taken at each soil horizon to a depth of 1 meter and analyses performed for a range of measurements, including soil organic carbon, texture, cation exchange capacity, pH; however in most cases no bulk density measurements were taken. This meant that while soil organic carbon concentrations were available this could not be related to a stock for a given soil series. In 2012/2013, 246 profile pits were sampled and analysed as part of the Irish Soil Information System project to fill in gaps in the description of representative profile data for Ireland. Use the Symbology layer file 'SOIL_SISSoilSOC.lyr' based on Value Field 'SOC'.

Register and Map of Sustainable Urban Drainage Systems (SUDs) completed in Dublin City Council area This database contains location and description information for Sustainable Urban Drainage Systems (SUDs) installed as per final drainage drawings referenced to planning applications granted by Dublin City Council between 2005-09. 'SUDs is a sustainable approach to rainwater management that mimics natural hydrological processes to reduce stormwater runoff and add amenity value. Typical SUDs installations included in register include attenuation tank, permeable paving, detention pond, swales, green roof, infilatration trences/soakaways, filter drains, permeable paving, filter drain etc. For further information on SUDs see www.irishsuds.com.'Information fields include location address, landuse (as granted), national grid co-ordinates, planning application reference, status (planning, under construction or constructed), previous landuse, ownership, maintained by (public or private), area (permeable and impermeable surfaces), type of device, reason for installation, physical features (shape, size etc), outflow limit (limit of flow off site in litres/second), ecological features (plant life) and water quality.'Spatial co-ordinatesfor each SUDs are given in Irish Grid and an overall GIS Map shows the distribution of SUDs installations across Dublin City. Spatial Projection: IG, MapInfo

For each watercourse with a drainage basin ≥ 500 km2 the main drain class should be indicated.This dataset is provided by Tailte Éireann – National Mapping Division

For each watercourse with a drainage basin ≥ 500 km2 the main drain class should be indicated.

SIS SOIL:The new Irish Soil Information System concludes a 5 year programme, supported by the Irish Environmental Protection Agency (STRIVE Research Programme 2007-2013) and Teagasc, to develop a new 1:250,000 scale national soil map (http://soils.teagasc.ie). The Irish Soil Information System adopted a unique methodology combining digital soil mapping techniques with traditional soil survey application. Developing earlier work conducted by An Foras Talúntais, the project generated soil-landscape models for previously surveyed counties. These soil-landscape (‘soilscape’) models formed the basis for training statistical ‘inference engines’ for predicting soil mapping units, checked during field survey. 213 soil series are identified, each with differing characteristics, having contrasting environmental and agronomic responses. Properties were recorded in a database able to satisfy national and EU policy requirements. The Irish soil map and related soil property data will also serve public interest, providing the means to learn online about Irish soil resources. Use the Symbology layer file 'SOIL_SISNationalSoil.lyr' based on Value Field 'Association_Unit'. SIS SOIL DRAINAGE:In Ireland, soil drainage category is considered to have a predominant influence on soil processes (Schulte et al., 2012). The maritime climate of Ireland drives wet soil conditions, such that excess soil moisture in combination with heavy textured soils is considered a key constraint in relation to achieving productivity and environmental targets. Both soil moisture content and the rate at which water drains from the soil are critical indicators of soil physical quality and the overall functional capacity of soil. Therefore, a natural extension to the Irish Soil Information System included the development of an indicative soil drainage map for Ireland. The soil subgroup map was used to develop the indicative drainage map, based on diagnostic criteria relating to the subgroup categorization. Use the Symbology layer file 'SOIL_SISSoilDrainage.lyr' based on Value Field 'Drainage'. SIS SOIL DEPTH: Soil depth is a measure of the thickness of the soil cover and reflects the relationship between parent material and length of soil forming processes. Soil depth determines the potential rooting depth of plants and any restrictions within the soil that may hinder rooting depth. Plants derive nearly 80 per cent of their water needs from the upper part of the soil solum, i.e. where the root system is denser. The rooting depths depend on plant physiology, type of soil and water availability. Generally, vegetables (beans, tomatoes, potatoes, parsnip, carrots, leek, broccoli, etc.) are shallow rooted, about 50–60 cm; fruit trees and some other plants have medium rooting depths, 70–120 cm and other crops such as barley, wheat, oats, and maize may have deeper roots. Furthermore, rooting depths vary according to the age of the plants. The exact soil depth is difficult to define accurately due to its high variability across the landscape. The effective soil depth can be reduced by the presence of bedrock or impermeable layers. Use the Symbology layer file 'SOIL_SISSoilDepth.lyr' based on Valued Field 'Depth'. SIS SOIL TEXTURE:Soil texture is an important soil characteristic that influences processes such as water infiltration rates, rootability, gas exchanges, leaching, chemical activity, susceptibility to erosion and water holding capacity. The soil textural class is determined by the percentage of sand, silt, and clay. Soil texture also influences how much water is available to the plant; clay soils have a greater water holding capacity than sandy soils. Use the Symbology layer file 'SOIL_SISSoilTexture.lyr' based on Value Field 'Texture'. SIS SOIL SOC:In the previous national soil survey conducted by An Foras Taluntais, 14 counties were described in detail with soil profile descriptions provided for the representative soil series found within a county. Soil samples were taken at each soil horizon to a depth of 1 meter and analyses performed for a range of measurements, including soil organic carbon, texture, cation exchange capacity, pH; however in most cases no bulk density measurements were taken. This meant that while soil organic carbon concentrations were available this could not be related to a stock for a given soil series. In 2012/2013, 246 profile pits were sampled and analysed as part of the Irish Soil Information System project to fill in gaps in the description of representative profile data for Ireland. Use the Symbology layer file 'SOIL_SISSoilSOC.lyr' based on Value Field 'SOC'.

This dataset provides an estimate of extreme water levels around the coast of Ireland for a range of Annual Exceedance Probabilities (AEPs). Extreme water level estimates are provided for present day sea levels as well as the Mid-Range Future Scenario (MRFS), High End Future Scenario (HEFS), High+ End Future Scenario (H+EFS) and High++ End Future Scenario (H++EFS) which represent a 0.5m, 1.0m, 1.5m and 2.0m increase in sea level, respectively. Users of this data should refer to the Irish Coastal Wave and Water Level Modelling Study 2018 Phase 1 Technical Report that can be found on https://www.floodinfo.ie/publications/.Purpose: Phase 1 of the Irish Coastal Wave and Water Level Modelling Study (ICWWS) 2018 provides an estimate of extreme water levels around the coast of Ireland for a range of Annual Exceedance Probabilities (AEPs). Extreme water level estimates are provided for present day sea levels as well as the Mid-Range Future Scenario (MRFS), High End Future Scenario (HEFS), High+ End Future Scenario (H+EFS) and High++ End Future Scenario (H++EFS) which represent a 0.5m, 1.0m, 1.5m and 2.0m increase in sea level respectively. This data is an update of the extreme water level estimation undertaken as part of the Irish Coastal Protection Strategy Study (ICPSS) between 2004 and 2013.This data has been provided by the Office of Public Works (https://www.floodinfo.ie/).https://data.gov.ie/dataset/arterial-drainage-scheme-channels?package_type=datasetContact Email: floodinfo@opw.ie

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 ‘recharge’. The Groundwater Recharge map shows the amount of rainfall which reaches the stores of groundwater (the ‘aquifers’) across Ireland. The amount of recharge was calculated over the period 1981-2010 and then averaged to give a yearly amount.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 ‘effective rainfall’.Different combinations of the geological factors give 24 hydrogeological scenarios. There is a ‘recharge coefficient’ for each scenario, which is the percentage of the ‘effective rainfall’ 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.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 recharge data is shown as polygons. Each polygon holds information on:Average Recharge (mm/yr) - average annual recharge to the groundwater aquifer across that polygonRecharge Coefficient (%) – the proportion of effective rainfall that becomes groundwaterEffective Rainfall (mm/yr) – the rainwater remaining after plants have taken up some of the rainfallRecharge Pre Cap (mm/yr) - effective rainfall x recharge coefficient, not limited by maximum recharge capacitiesRecharge Cap Apply – is there a maximum amount of recharge that the aquifer can accept? (Yes/ No)Recharge Maximum Capacity (mm/yr) – the maximum amount of recharge the aquifer can accept. Only applies to bedrock aquifers of category Ll, Pl, or Pu.Average Recharge Range (mm/yr) - Annual Recharge (mm) categorised into a range of values used to style the map. Hydrogeological Setting Code - determined by the combinations of different geological layersHydrogeological Setting Description – the description of the main geological layers that combine to let different amounts of rainfall through to become groundwaterVulnerability Category – the code for the groundwater vulnerabilityVulnerability Description – the groundwater vulnerability descriptionSoil Drainage – whether the soil is well drained or poorly drainedSubsoil Type (Quaternary Sediment Code) – the code for the subsoil typeSubsoil Description (Quaternary Sediment Description) – description of the subsoil typeSand/Gravel Subsoil – whether the subsoil is sand/gravel or notSubsoil Permeability Code - the code for the permeability of the subsoil Subsoil Permeability Description – description of the subsoil permeabilitySinking Stream – indicates the presence of a stream that sinks fully or partially into the ground. Derived from the Groundwater Vulnerability 40K mapping. Sand and Gravel Aquifer Category –Sand and Gravel Aquifer Category from Groundwater Resources (Aquifers) 40K mappingSand and Gravel Aquifer Description –Sand and Gravel Aquifer Description from Groundwater Resources (Aquifers) 40K mappingBedrock Aquifer Category –Bedrock Aquifer Category from Groundwater Resources (Aquifers) 100K mappingBedrock Aquifer Description –Bedrock Aquifer Description from Groundwater Resources (Aquifers) 100K mappingHydrostratigraphic Rock Unit Group Name– Rock Unit Groups that have hydrogeological significanceCounty – Irish County