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• administration
• catchment
• catchment area
• catchments
• catchments all island
• environment
• hydrography
• ie
• river
• river catchments
• water

Theme	Environment
Date released	2012-01-01
Date updated	2023-01-25
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	{"no limitations",https://creativecommons.org/licenses/by/4.0/,license,https://creativecommons.org/licenses/by/4.0/,license}
Update frequency	Other
Language	English
Landing page	https://gis.epa.ie/EPAMaps/default?easting=&northing=&lid=EPA:WATER_CATCHMENTS
Geographic coverage in GeoJSON format	{"type":"Polygon","coordinates":[[[-10.47472, 51.44555],[-10.47472, 55.37999], [-6.01306, 55.37999], [-6.01306, 51.44555], [-10.47472, 51.44555]]]}
Spatial Reference Systems (SRS)	TM65 / Irish Grid (EPSG:29902)
Vertical Extent	{"maxVerticalExtent": "1014", "verticalDomainName": "EPSG Projection 5731 - Malin Head height", "minVerticalExtent": "0"}
Provenance information	Digitisation carried out in 1997 from a 1958 source Data Data Capture:Boundaries shown on 1958 Ordnance Survey map were redrawn onto the Ordnance Survey 1/2 inch maps using map overlays, which were subsequently digitised using a digitising tablet. Thematic Accuracy:Only catchment code and area/perimeter values assigned. Spatial Accuracy:Shared boundaries between catchment areas and (I)RBDs have been updated as a result of field verification processes. Hydrological errors still exist in catchment boundaries not shared with (I)RBDs. Logical Consistency:Project to verify RBD boundaries in the field show the boundaries are not always hydrologically correct. It is Recommended that field verification be undertaken to verify internal catchment boundaries. Sources Used:Rivers and their catchment basins, OSI 1958 Discovery Series, OSI 1/2inch maps
Period of time covered (begin)	1997-01-01
Period of time covered (end)	2012-01-01