315ac636-2179-4232-bb1b-3ed32f1d97ac Data Analyst Environmental Protection Agency Scientific Officer +353-53-9160600 +353-53-9160601 PO Box 3000 Johnstown Castle Estate Wexford Co. Wexford Ireland gis@edenireland.ie http://gis.epa.ie 2023-09-11T10:50:41.757Z ISDI Metadata Profile 1.2 EPSG Geodetic Parameter Dataset EPSG 2009-11-25 http://www.opengis.net/def/crs/EPSG/0/29902 GSI Groundwater Vulnerability GE.Acquifer.IE.GeologicalSurveyIreland.GroundwaterVulnerability 2012-01-12T00:00:00 2014-01-10T00:00:00 2024-01-25T00:00:00 GE.IE.EPA.GEOL.VECTOR.SDE.GEOL_Vulnerability_SG_Susceptibility_Vulnerability Groundwater Vulnerability is a term used to represent the intrinsic geological and hydrogeological characteristics that determine the ease with which groundwater may be contaminated by human activities. Groundwater vulnerability maps are based on the type and thicknesses of subsoils (sands, gravels, glacial tills (or boulder clays), peat, lake and alluvial silts and clays), and the presence of karst features. Groundwater is most at risk where the subsoils are absent or thin and, in areas of karstic limestone, where surface streams sink underground at swallow holes. All land area is assigned one of the following groundwater vulnerability categories: Rock near surface or karst (X) Extreme (E) High (H) Moderate (M) Low (L). Indicates the likelihood of groundwater contamination. Aids land-use management. Helps in the choice of preventative measures and enables developments, which have a significant potential to contaminate, to be located in areas of lower vulnerability. Helps to ensure that a groundwater protection scheme is not unnecessarily restrictive on human economic activity. Risk assessment tool: measure of the likelihood of groundwater contamination occurring. GIS Team Environmental Protection Agency Data Manager +353-53-9160600 +353-53-9160601 PO Box 3000 Johnstown Castle Estate Wexford Co. Wexford Ireland gis@epa.ie water geology GEMET - Concepts, version 2.4 GEMET 2010-01-13 Geology GemetInspireTheme GEMET 2008-12-05 waterbody groundwater vulnerability Environmental Protection Agency EPA 2014-06-23 IE ISO 3166 ISO 1974-12-31 Data is for public use under Creative Commons CC-By 4.0 https://creativecommons.org/licenses/by/4.0/ 50000 environment -10.47472 -6.01306 51.44555 55.37999 2012-01-12T00:00:00 2012-01-12T00:00:00 0 1014 An Ordnance Datum or OD is a vertical datum used by an ordnance survey as the basis for deriving altitudes on maps. A spot height may be expressed as AOD for "above ordnance datum". Usually mean sea level (MSL) is used for the datum. Malin Ordnance Datum Derivation of vertical height or depth (in metres) In the Republic of Ireland, OD for the Ordnance Survey of Ireland is Malin Ordnance Datum: the Mean Sea Level (MSL) at Portmoor Pier, Malin Head, County Donegal, between 1960 and 1969. 5731 EPSG Projection 5731 - Malin Head height Metres Derivation of Altitude OD based on Mean Sea Level, Malin Head 1960-1969 ESRI Shapefile 10.x GIS Team Environmental Protection Agency Data Manager +353-53-9160600 +353-53-9160601 PO Box 3000 Johnstown Castle Estate Wexford Co. Wexford Ireland gis@epa.ie https://www.gsi.ie/en-ie/data-and-maps/Pages/default.aspx WWW:LINK-1.0-http--link Data Information INSPIRE Data Specification on Geology INSPIRE Data Specifications v3.0 2014-04-17 The INSPIRE Directive or INSPIRE lays down a general framework for a Spatial Data Infrastructure (SDI) for the purposes of European Community environmental policies and policies or activities which may have an impact on the environment. false COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services INSPIRE Interoperability Regulation 2010-12-08 Level of conformance with the COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services false Application of the data: Local details are generalised to fit the original mapping and interpretation scale of 1:50,000. Evaluation of specific sites and circumstances will normally require further and more detailed assessments, and will often require site investigations. ?Sources of Information: GSI 1:10,560 Geology Field Sheets Teagasc/EPA 1:40,000 Subsoil Map GSI 1:50,000 Depth to Bedrock Map from county GWPSs and NDP-funded national mapping programme GSI 1:50,000 Subsoil Permeability Map from county GWPSs and NDP-funded national mapping programme GSI Groundwater Section Well Database GSI Bedrock Section Core Hole database GSI Quaternary/Geotechnical Section Borehole Data GSI groundwater vulnerability drilling programme Data on site investigations procured from consultants ?Vulnerability map creation technique: Created using tools built though ArcGIS model builder. On a county by county basis. Depth to bedrock layer and subsoil permeability layer are combined and the vulnerability category is calculated for each resulting combination using the groundwater vulnerabilty matrix http://www.gsi.ie/Programmes/Groundwater/Projects/Protection+Schemes+Guidelines.htm#categories National Vulnerability map is created by combining all county vulnerability maps.