Reservoir Flood Map Maximum Flood Outline Extent

Data layer showing individual reservoir flood maps for 225 Large Raised Reservoirs including attributed data. Individual reservoirs may have up to 5 flood maps associated with them, based on separate breach locations. The data shows the maximum extent of flood should the reservoir be breached, although the location of the reservoir can be inferred it is not explicitly shown on the maps. Reservoir flooding is extremely unlikely to happen. There has been no loss of life in the UK from reservoir flooding since 1925. All large reservoirs must be inspected and supervised by reservoir panel engineers. As the enforcement authority for the Reservoirs Act 1975 in Wales, we ensure that reservoirs are inspected regularly and essential safety work is carried out. An online viewable version of this dataset is available here: https://www.naturalresourceswales.gov.uk/our-evidence-and-reports/maps/flood-risk-map/?lang=en

Identifier: NRW_DS116250

Alternative Title

AFA113 Reservoir Flood Map Maximum Flood Outline (Extent)
Map Llifogydd sy’n Amlinellu Maint Eithaf Llifogydd o Gronfeydd Dŵr

Metadata Language: English

Lineage: The Reservoir Flood Map Outline (Extent) shows the largest area that might be flooded if a reservoir were to fail and release the water it holds. Since this is a prediction of a credible worst case scenario, it’s unlikely that any actual flood would be this large. These data are intended for emergency planning only and are not reliable for large scale flood risk assessments. Please note that only flood maps for large reservoirs are displayed. Flood maps are not displayed for smaller reservoirs or for reservoirs commissioned after reservoir mapping began in spring 2009.

Additional Information: https://www.naturalresourceswales.gov.uk/our-evidence-and-reports/maps/flood-risk-map/?lang=en

Dataset Reference Date (Publication): 2020-10-27

Temporal Extent

Begin date: 2013-04-01

End date: 2013-04-01

Topic category

Environment

Owner

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Originator

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Extent

Geographic Extent: Wales (WLS)

Format Type and Description

Geographic Information System Geographic Information System ()

Specification

ESRI GIS Format

Data quality

Quality Scope: Dataset

Conformity: 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
Explanation
Degree: false

Lineage: The Reservoir Flood Map Outline (Extent) shows the largest area that might be flooded if a reservoir were to fail and release the water it holds. Since this is a prediction of a credible worst case scenario, it’s unlikely that any actual flood would be this large. These data are intended for emergency planning only and are not reliable for large scale flood risk assessments. Please note that only flood maps for large reservoirs are displayed. Flood maps are not displayed for smaller reservoirs or for reservoirs commissioned after reservoir mapping began in spring 2009.

Keywords

GEMET - INSPIRE themes, version 1.0

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

Integrated Public Sector Vocabulary

reservoirs

Type: Theme

Citation

Date (Revision): 2013-04-03

Code: geonetwork.thesaurus.external.theme.subjects

Keywords

NRW SMNR Vocabulary

Natural Resources (incl. Features and Processes) (SMNR)
Ecosystem (SMNR)
Sustainable Management of Natural Resources (SMNR)
Flooding (SMNR)
Water Resources (SMNR)
Management Areas (SMNR)
Freshwater and Wetlands (SMNR)
Soil and Land (SMNR)

Type: Theme

Citation

Date (Revision): 2023-12-27

Code: geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords

Code: Latitude and Longitude (EPSG::4326)

Content Information

NRW Profile

Custom Elements

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: Part of this dataset is sensitive and restricted as it contains data exempt from general release under EIR. Sensitive data must be kept confidential; general release is not permitted due to national security reasons.

Use Constraints

Use constraints type: Other restrictions

Attribution Statement

Other constraints: NRW Conditional

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313136323530 XML

Metadata Language: English

Resource type: Dataset

Metadata Date: 2024-05-30T15:37:54.439Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Publishing Body

Access the portal

Full access to the portal and metadata.

Reservoir Flood Map Maximum Flood Outline Extent

Identification

Temporal Extent

Extent

Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Attribution Statement

Metadata

Metadata

Publishing Body