c6aa305d-9ffb-452e-9304-15683bb564e2 Large Raised Reservoir register (Locations and undertakers) 2026-05-07 Natural Resources Wales inlandWaters 51.37973173445827 53.41033723495585 -5.281155808232745 -2.701744724718854 en This dataset contains details of Large Raised Reservoirs in Wales. Natural Resources Wales (NRW) collects and maintains data on all reservoirs designed or capable of holding more than 10,000 cubic metres of water above the natural level of any part of the land adjoining them defined as 'large raised reservoirs' under the Reservoirs Act 1975. Two types of reservoir are maintained within the register: - Impounding; or - Non-Impounding. This dataset is an extract from NRW’s Cronfeydd/Reservoir Database. It contains information on the location, undertakers and engineers of the reservoirs. 'Undertaker' is the legal term used to identify who manages and controls the use of the reservoir and is responsible for maintaining compliance with the law. The undertaker is the person, people or company that uses a reservoir for a particular purpose. If there is no use, the owners or lessees are the undertakers. The undertaker may be different from the owner. If several people or organisations manage and control the reservoir, there can be more than one undertaker. This data is collected as part of the Reservoirs Act Public Register. Attribution statement: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. 2026-05-07 OGC:WFS https://datamap.gov.wales/geoserver/ows OGC WFS: geonode Service OGC:WMS https://datamap.gov.wales/geoserver/ows OGC WMS: geonode Service WWW:DOWNLOAD-1.0-http--download /static/geonode/img/missing_thumb.png?v=6d8287f7 Large Raised Reservoir register (Locations and undertakers) (Thumbnail Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetLegendGraphic&format=image/png&WIDTH=20&HEIGHT=20&LAYER=geonode:nrw_large_raised_reservoirs_location_and_undertakers&STYLE=point&version=1.3.0&sld_version=1.1.0&legend_options=fontAntiAliasing:true;fontSize:12;forceLabels:on Large Raised Reservoir register (Locations and undertakers) (Legend Format) WWW:LINK-1.0-http--link https://datamap.gov.wales/layers/geonode:nrw_large_raised_reservoirs_location_and_undertakers Web address (URL) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&outputFormat=json&srs=EPSG%3A27700&srsName=EPSG%3A27700 Large Raised Reservoir register (Locations and undertakers) (GeoJSON Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&outputFormat=excel&srs=EPSG%3A27700 Large Raised Reservoir register (Locations and undertakers) (Excel Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&outputFormat=csv&srs=EPSG%3A27700 Large Raised Reservoir register (Locations and undertakers) (CSV Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&outputFormat=text%2Fxml%3B+subtype%3Dgml%2F3.1.1&srs=EPSG%3A27700 Large Raised Reservoir register (Locations and undertakers) (GML 3.1.1 Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&outputFormat=gml2&srs=EPSG%3A27700 Large Raised Reservoir register (Locations and undertakers) (GML 2.0 Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&outputFormat=dxf&srs=EPSG%3A27700 Large Raised Reservoir register (Locations and undertakers) (DXF Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&outputFormat=gpkg&srs=EPSG%3A27700 Large Raised Reservoir register (Locations and undertakers) (OGC Geopackage Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&outputFormat=SHAPE-ZIP&srs=EPSG%3A27700&format_options=charset%3AUTF-8 Large Raised Reservoir register (Locations and undertakers) (Zipped Shapefile Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&format=image%2Fpng&height=550&width=420&srs=EPSG%3A27700&bbox=181800.0%2C169191.0%2C351300.03125%2C390641.03125 Large Raised Reservoir register (Locations and undertakers) (PNG Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&format=application%2Fpdf&height=550&width=420&srs=EPSG%3A27700&bbox=181800.0%2C169191.0%2C351300.03125%2C390641.03125 Large Raised Reservoir register (Locations and undertakers) (PDF Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Anrw_large_raised_reservoirs_location_and_undertakers&format=image%2Fjpeg&height=550&width=420&srs=EPSG%3A27700&bbox=181800.0%2C169191.0%2C351300.03125%2C390641.03125 Large Raised Reservoir register (Locations and undertakers) (JPEG Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/download/3505 Large Raised Reservoir register (Locations and undertakers) (Original dataset Format) CEOS IDN DIF 9.7