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Groundwater Wells and Springs Ireland (ROI) ITM

Category: Science
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A well is a hole dug into the ground usually for the purpose of taking water from the ground but also for monitoring groundwater. Most private wells are used for home and farm water supplies are in rural areas. Springs occur where groundwater comes out at the surface. A borehole is a hole drilled into the ground to gain access to groundwater. The hole is usually deep, narrow and round.

This map shows the location of the dug wells, springs and boreholes in Ireland. Data was collected by GSI drilling or submitted to the GSI from Local Authorities and other state bodies, Private Well Grants, Drillers, Consultants, Group Water Schemes and Academia. The location accuracy is visually portrayed on the GSI webmapping viewer by the size of the circle displaying the record. It is NOT a comprehensive database and many wells and springs are not included in this database. You should not rely only on this database, and should undertake your own site study for wells in the area of interest if needed.

This map is to the scale 1:100,000. This means it should be viewed at that scale. When printed at that scale 1cm on the map relates to a distance of 1km.

It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).

The data is shown as polygons. Each polygon holds information on the location of the borehole (X and Y coordinates), Well ID (well identifier), hole details, location details, yield, abstraction ,drilling details.

Data Resources (5)

WMS
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Data Resource Preview - WMS

Theme Science
Date released 2009-12-18
Date updated 2021-10-22
Dataset conforms to these standards 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.
Rights notes ['Creative Commons Attribution 4.0 International (CC BY 4.0)', '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.\nhttps://creativecommons.org/licenses/by/4.0/\nhttps://creativecommons.org/licenses/by/4.0/legalcode\nUnder the CC-BY Licence, users must acknowledge the source of the Information in their product or application.\nPlease use this specific attribution statement: "Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence".\nIn 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.', 'license']
Update frequency Irregular
Language English
Landing page https://gsi.geodata.gov.ie/portal/apps/webappviewer/index.html?id=d333a8a9b6ab44378411fc0d973db4ef
Geographic coverage in GeoJSON format {"type":"Polygon","coordinates":[[[-11.0, 50.0],[-11.0, 56.0], [-5.0, 56.0], [-5.0, 50.0], [-11.0, 50.0]]]}
Spatial Reference Systems (SRS) Irish Transverse Mercator (ITM, EPSG:2157)
Vertical Extent {"verticalDomainName": "sea level", "minVerticalExtent": "0", "maxVerticalExtent": "-100"}
Provenance information Data sources include but are not limited to: GSI field work and surveys, Local Authorities - Public Water Supplies and Private Well Grants, Group Water Schemes, Consultants, Other State bodies, Academic research. Data have been acquired and processed for the purpose of many projects, mainly County Groundwater Protection Schemes and Water Framework Directive . The level of detail and precision of records in the database is a reflection of the information sources. Location information is manually assessed from site maps or townland names where grid references are not supplied. Well yield data are often estimates while drilling; GSI has made its best attempts to choose data that reflect long-term sustainable yields from these various information sources. This database contains records of boreholes, dug wells, springs, and ground site investigations. Data are derived from GSI drilling, fieldwork and surveys, Local Authorities and other state bodies, Private Well Grants, Drillers, Consultants, Group Water Schemes and Academia. The locations of records have different accuracies depending on the source data. The location accuracy is conveyed graphically in the GSI webmapping by the size of the circle that denotes a record. It is NOT a comprehensive database and many wells and springs are not included in this database. The user should not rely only on this database, and should undertake their own site study for wells in the area of interest if needed. It is important to note that it is NOT a comprehensive database and is not a comprehensive list of all the wells in any one area. Although we try to ensure the information is as reliable as possible, the GSI takes no responsibility for the accuracy of the data or for decisions made on the basis of using the data. Due attention must be paid to the location accuracy given with each well record, which ranges from 10m to more than 1km (townland accuracy). Digital files are updated periodically and users are responsible for obtaining the latest version of the data. There are 31 published data fields (designated in square brackets below, []). Not all records have data associated with all fields and, for many of the records, only some of the fields have values. [GSIName]: GSI's name for borehole/spring/trial pit/dug well. [OrigName]: bh/spring/trial pit/etc. in original study. [SrcName]: name of supply (for public, group scheme supplies, etc.). [Source Type]: Source Type, e.g. borehole, spring, dug well, unknown. [Depth_m]: Depth of hole (metres). [Dpth-Rck_m]: Depth to rock (metres). [DTRConfid]: Confidence in Depth to rock finding - met, presumed, unknown. [DrillDate]: Date well or spring construction commenced [Easting] Easting, six figure Irish National Grid reference. [Northing]: Northing, six figure Irish National Grid Reference. [Loc_Acc]: Spatial accuracy of the Grid Reference, in metres/kilometres. [Townland]: Townland name. [SixInShtNo]: OSi Six Inch sheet number. [County]: County. [SourceUse]: The use to which the source is put, e.g., public supply source, private, etc. [Yield_m3d]: The yield of the source, cubic metres per day. Value given not always the sustainable yield. [YldClass]: The GSI yield class -Boreholes: Excellent (>400m3/d), Good (100-400m3/d), Moderate (40-100m3/d), Poor (<40m3/d) -Springs: High (>2,160m3/d), Intermediate 430-2,160m3/d), Low (<430m3/d) [ProdClass]: The GSI Productivity Class - related to specific capacity. Five classes range from I (best) to V (worst). [Abstr_m3d]: Average reported daily abstraction, cubic metres per day. Correct value when record entered, may have changed since. [Ovrflw_m3d]: Average daily overflow from spring, cubic metres per day. [AbstrDDm]: The typical drawdown in the well, in metres, for the reported daily abstraction. [SC_m3dm]: The specific capacity of the well (cubic metres per day per metre) at the stated daily abstraction rate. [CasngDiamm]: Diameter of casing at top of hole (millimetres). [Wtrstrk1_m]: First reported waterstrike encountered when drilling (metres) [Wtrstrk2_m]: Second reported waterstrike encountered when drilling (metres) [Wtrstrk3_m]: Third reported waterstrike encountered when drilling (metres). [Wtrstrk4_m]: Fourth reported waterstrike encountered when drilling (metres). [Wtrloss1_m]: Depth (metres) at which water loss occurred. [GenComms]: Comments, general [DrillComms] Comments, generally related to drilling conditions. [CasingComs]: Comments, on casing, conditions when drilling, water strikes, losses, quality In 2021, the data structure was reviewed and a new database was created in ArcGIS Enterprise. Using ArcGIS Pro 2.6.3, the dataset was renamed as part of a GSI data standardisation process. A standardised dataset alias was added. A unique id field was added. A new unique identifier was added for each record using an attribute rule. Most fields were renamed and an alias added. Domains were created for relevant fields to ensure attribute integrity for those fields. The attribute values can only be added from pre-defined GSI tables in the form of drop-down values. Attribute rules were set up to automatically insert certain values eg unique identifier. The data was cleaned using a GSI notebook. This checked the attribute values contained valid domain values and a spell check was carried out. Some manual cleaning of obvious errors was also carried out. Metadata was updated to the new GSI standard based on INSPIRE and ISO standards.
Period of time covered (begin) 1901-01-02
Period of time covered (end) 2005-01-01