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DataMapWales
Flood Alert Areas are geographical areas where it is possible for flooding to occur from rivers or the sea. A single Flood Alert Area may cover the floodplain within the Flood Warning Service Limit of multiple catchments of similar characteristics containing a number of Flood Warning Areas. A Flood Alert Area may also match that of a corresponding Flood Warning Area and warn for the possibility of flooding in that area. In some coastal locations a Flood Alert may be issued for spray or overtopping and be defined by a stretch of coastline. Practical and administrative factors may also influence the exact extent of a Flood Alert Area. An online viewable version of the dataset is available here. Attribution Statement Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.
The Flood and Coastal Erosion Risk Management Programme provides grant funding to Local Authorities to undertake Capital investment to reduce the risks from flooding and/or coastal erosion. Funding is allocated at the start of the financial year for work to be undertaken over that year. This not only includes the construction of new assets but also the preparatory work through business cases prior to construction commencing. Purpose This map sets out the schemes which the Minister for Climate Change and Rural Affairs has allocated funding for in the 2024-25 Budget. These schemes will be delivered by Local Authorities. Data quality The information contained within this map has been provided by the Local Authorities who are responsible for delivering these schemes. In some cases, schematic location may not be exact and may be an approximate location / centre point within the Authority. Minimum scale set as 1:100,000 in map. This is due to the approximate location information given by RMAs. The data shown in this map is accurate as of the 12 March 2024 and could have been subject to change after this date. Funding to progress to construction is subject to completion and agreement of an appropriate business case and obtaining relevant permissions and consents Costs remain estimates until the work has been tendered.
The Flood and Coastal Erosion Risk Management Programme provides grant funding to Local Authorities to undertake capital investment to reduce the risks from flooding and/or coastal erosion. Funding is allocated at the start of the financial year for work to be undertaken over that year. This not only includes the construction of new assets but also the preparatory work through business cases prior to construction commencing. Purpose This map sets out the schemes which the Minister for Climate Change has allocated funding for in the 2023-24 budget. These schemes will be delivered by Local Authorities. Data Quality The data shown in this map is accurate as of the 20 April 2023 and could have been subject to change after this date. The information contained within this map has been provided by the Local Authorities who are responsible for delivering these schemes. Funding to progress to construction is subject to completion and agreement of an appropriate business case and obtaining relevant permissions and consents. Costs remain estimates until the work has been tendered.
The Flood and Coastal Erosion Risk Management Programme provides grant funding to Local Authorities and Natural Resources Wales (NRW) to undertake capital investment to reduce the risks from flooding and/or coastal erosion. Funding is allocated at the start of the financial year for work to be undertaken over that year. This not only includes the construction of new assets but also the preparatory work through business cases prior to construction commencing. Purpose This map sets out the schemes which the Minister for Climate Change and Rural Affairs has allocated funding for in the 2022-23 budget. These schemes will be delivered by Local Authorities and Natural Resources Wales. Data Quality The information contained within this map has been provided by the Local Authorities and NRW who are responsible for delivering these schemes. Funding to progress to construction is subject to completion and agreement of an appropriate business case and obtaining relevant permissions and consents. Costs remain estimates until the work has been tendered. In some cases, schematic location may not be exact and may be an approximate location / centre point within the Authority.
The Flood Map for Planning (FMfP) includes climate change information to show how this will affect flood risk extents for rivers, the sea and surface water and small watercourses over the next century. It shows the potential extent of flooding assuming no defences are in place. It also indicates areas at risk from coastal erosion, areas that have flooded in the past and key information on the location of flood defence infrastructure. The FMfP can be considered as the best available information on flood risk and will replace the Development Advice Map for planning purposes in June 2023. Although it currently has no official status for planning purposes it is a useful data source when considering flood risks. More information on the formal implementation of the new TAN15 and FMfP is set out in the Written Statement from the Welsh Government. The FMfP introduces a new layer called the TAN15 Defended Zone. This shows areas that benefit from risk management authority owned flood defence infrastructure, that have a minimum, Present Day level of protection of: 1% (1 in 100) annual event probability (AEP) for rivers, or 0.5% (1 in 200) annual event probability (AEP) for the sea. Flood defences built after 1 January 2016 must also include design freeboard and an allowance for climate change. TAN15 Defended Zones are created for individual sources of flooding (i.e. Rivers or Sea). There are no TAN15 Defended Zones for Surface Water & Small Watercourses. Attribution Statement Contains Natural Resources Wales information © Natural Resources Wales and database right. All rights reserved. Some features of this information are based on digital spatial data licensed from the UK Centre for Ecology & Hydrology © UKCEH. Defra, Met Office and DARD Rivers Agency © Crown copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right.
The Flood Map for Planning (FMfP) includes climate change information to show how this will affect flood risk extents for rivers, the sea and surface water and small watercourses over the next century. It shows the potential extent of flooding assuming no defences are in place. It also indicates areas at risk from coastal erosion, areas that have flooded in the past and key information on the location of flood defence infrastructure. The FMfP can be considered as the best available information on flood risk and will replace the Development Advice Map for planning purposes when the Welsh Government implements the revised TAN15. Although it currently has no official status for planning purposes it is a useful data source when considering flood risks. The coming into force of the new TAN 15 and the Flood Map for Planning has been suspended due to a further consultation on the TAN. Technical advice note (TAN) 15: development, flooding and coastal erosion | GOV.WALES The Flood Zones within the FMfP shows the undefended risk of flooding from Rivers, the Sea and from Surface Water & Small Watercourses. Flood Zone 3 displays the extent of flooding from: rivers with a 1% (1 in 100) chance or greater of happening in any given year, including an allowance for climate change. the sea with a 0.5% (1 in 200) chance or greater of happening in any given year, including an allowance for climate change. Surface water & small watercourses with a 1% (1 in 100) chance or greater of happening in any given year, including an allowance for climate change. Flood Zone 2 displays the extent of flooding from: Rivers with less than 1% (1 in 100) but greater than or equal to 0.1% (1 in 1,000) chance of happening in any given year, including an allowance for climate change. the Sea with less than 0.5% (1 in 200) but greater than or equal to 0.1% (1 in 1,000) chance of flooding in any given year, including an allowance for climate change. Surface water & small watercourses with less than 1% (1 in 100) but greater than or equal to 0.1% (1 in 1,000) chance of happening in any given year, including an allowance for climate change. The FMfP is displayed in two parts, a Basic View and a Detailed View. In the Basic View the risk of flooding from Rivers and the Sea is shown as a merged layer. In the Detailed View flood risk is separated into individual sources. In both Views Flood Zones for Surface Water & Small Watercourses are shown separately. Attribution Statement: Contains Natural Resources Wales information © Natural Resources Wales and database right. All rights reserved. Some features of this information are based on digital spatial data licensed from the UK Centre for Ecology & Hydrology © UKCEH. Defra, Met Office and DARD Rivers Agency © Crown copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right.
Flood Risk Assessment Wales provides a national assessment of risk flooding from Rivers, the Sea and Surface Water and Small Watercourses (replacing the Risk of Flooding Rivers and Sea, or RoFRS, dataset). The assessment takes into account flood defences and combines new, national-scale modelling with detailed local-scale models to categories risk into 3 bands, labelled ‘High’, ‘Medium’ and ‘Low’ risk. For Rivers and Surface Water and Small Watercourses: ‘High’ risk means that each year, this area has a chance of flooding of greater than 1 in 30 (3.3%) ‘Medium’ risk means that each year, an area has a chance of flooding of between 1 in 100 (1%) and 1 in 30 (3.3%). ‘Low’ risk means that each year, an area has a chance of flooding of between 1 in 1000 (0.1%) and 1 in 100 (1%). For the Sea: ‘High’ risk means that each year, this area has a chance of flooding of greater than 1 in 30 (3.3%) ‘Medium’ risk means that each year, an area has a chance of flooding of between 1 in 200 (0.5%) and 1 in 30 (3.3%). ‘Low’ risk means that each year, an area has a chance of flooding of between 1 in 1000 (0.1%) and 1 in 200 (0.5%) The risk assessment takes into account the effect of flood defences where we have information. Flood defences reduce, but do not completely stop the chance of flooding as they can be overtopped or fail. Flood risk information for each source has been created as ‘onion-skins’, i.e. with no overlapping data between individual risk bands. These risk bands should be combined and displayed a single layer for each flood source. If data is displayed in map form to others, appropriate map scales should be used given the indicative nature of the modelling. It should be shown with a maximum zoom scale of 1:5,000 and that base mapping of 1:10,000 is used to give context. The flood mapping is based on areas at risk of flooding and is not specific to individual properties. NRW doesn’t hold information about an individual property’s construction that might affect whether flooding of a certain depth could enter a property and cause damage. As such, our information has been produced to identify general areas potentially at risk of flooding for further investigation. Spatial resolution of the data: National scale modelling undertaken at 2m grid resolution. Local scale modelling undertaken at different resolutions, typically between 2m – 10m. More information is available in the FRAW (2019) project report and NRWs Understanding your flood risk results webpage (https://naturalresources.wales/flooding/managing-flood-risk/understanding-your-flood-risk-results?lang=en) for more information on our flood risk data and how it should be used. An online version of the map is available here. The Risk Level Under Review identifies locations where our risk assessment is under review over the next 6 months due to the availability of new, local-scale model information. Attribution Statement Contains Natural Resources Wales information © Natural Resources Wales and database right. All rights reserved. Some features of this information are based on digital spatial data licensed from the UK Centre for Ecology & Hydrology © UKCEH. Defra, Met Office and DARD Rivers Agency © Crown copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right.
This spatial Flood Warning Areas dataset are geographical areas where NRW expect flooding to occur and where NRW provide a Flood Warning Service. Flood Warning Areas generally contain properties that are expected to flood from rivers or the sea. Specifically, Flood Warning Areas define locations within the Flood Warning Service Limit that represent a discrete community at risk of flooding. A discrete community is a recognised and named geographical community, which can be an urban area, a significant suburb of a large city or a village or a hamlet. The purpose of Flood Warnings is to alert people that flooding is expected and they should take action to protect themselves and their property. An online viewable version of this dataset is available here. Attribution Statement Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.
This layer shows the SAF_01a area for ports, harbours and marinas applying at the date of the publication of the Marine planning technical statement: safeguarding policy for ports and shipping. The SAF_01a area is based on the boundaries for Statutory Harbour Authority (SHA) jurisdictions in Wales. Anchorage and pilot boarding areas within SHA boundaries are included in the SAF_01a area. Shipping activity outside of SHA boundaries, including anchorage and pilot boarding areas, is safeguarded through Policy SAF_01b. The Harbour Areas, Anchorage, and Pilot Boarding Areas layers, from which this layer was derived, can be viewed on the Wales Marine Planning Portal under the Sectors category, then Ports and Shipping subcategory. The SAF_01a policy also applies to ports, harbours and marinas outside of SHA boundaries. As the boundaries of ports outside SHAs are not known, these are not reflected on the map of the SAF_01a area, and proposals will need to liaise directly with individual ports regarding precise boundaries.The location and ownership of ports can be viewed on the Ports in Wales layer on the Wales Marine Planning Portal, which can be found under the Sectors category, then Ports and Shipping subcategory.
This layer shows the focus area for policy SAF_01b area for safeguarding recreational boating activity (i.e. the areas which are most significant for sector activity), which applies at the date of the publication of the Marine Planning Techincal Technical Statement: Safeguarding policy for recreation boating in March 2023. The focus area for policy SAF_01b for safeguarding recreational boating activity (i.e. the areas which are most significant for sector activity) was derived from the RYA UK Coastal Atlas of Recreational Boating (2019). The RYA Coastal Atlas layers can be found on the Wales Marine Planning Portal under the Sectors category, then Tourism and Recreation subcategory. For context and to provide a more complete picture of recreational boating activity, we recommend viewing the SAF_01b Area together with the original RYA Coastal Atlas layers. The RYA dataset utilises AIS data from recreational vessels for May to September of 2014 and 2017 to determine the intensity of boating activity in coastal waters around the UK. Within the Welsh Marine Plan Area, relative intensity ranges from 0.3 to 3.4 on a logarithmic scale. The focus area was identified based on a minimum intensity of 1 on this scale, indicating areas of medium to high intensity boating activity. To provide a more complete picture of recreational boating activity, the focus area for policy SAF_01b for recreational Boating also includes General Boating Areas as defined in the RYA Atlas. Small, isolated patches of apparent boating activity were removed from the focus area for policy SAF_01b. Boundaries of the focus area were simplified to help ensure that the main recreational boating areas were represented while allowing a clear area to be defined.
This layer shows the focus area (i.e. the areas which are most significant for sector activity) for policy SAF_01b for shipping activity, which applies at the date of the publication of the Marine planning technical statement: safeguarding policy for ports and shipping. The focus area is derived from data on vessel movement density and areas relating to shipping activity, outside of Statutory Harbour Authority (SHA) boundaries. Data on shipping density was extracted from Automatic Information System (AIS) data. The focus area is based on a threshold of at least 600 vessel transits per 1km2 hexagonal cell per annum. Although below the threshold, the route from Milford Haven to Falmouth was also included in the focus area. Small, isolated areas (< 1km2) of apparent shipping activity were removed from the focus area. As SHAs are safeguarded under SAF_01a, shipping activity within SHA boundaries was also removed from the focus area. Focus area boundaries were simplified to ensure that the main shipping areas are represented whilst allowing us to define a clear area. Data on shipping-related area was derived from UK Hydrographic Office, OceanWise and Natural Resource Wales datasets, and includes anchorages, pilot boarding areas, navigation dredging and disposal areas, and traffic separation schemes. These datasets can be viewed on the Wales Marine Planning Portal, under the Sectors category, then Ports & Shipping subcategory.
These map layers provide information on the location of spawning and nursery areas of several forage fish species in Welsh and surrounding waters, including the Irish and Celtic Seas and the western English Channel. These layers are provided for eleven fish species that are prey to marine mammals and seabirds: herring, sprat, sardine, anchovy, sandeel, horse mackerel, mackerel and garfish as well as the gadoid species poor cod, whiting and cod. Using survey data from 2008 to 2020, hotspot maps were created for adults and juveniles of each of the species, for two periods of the year (Quarter 1 and Quarter 4). A full description of the hotspot methodology used can be found in Campanella and van der Kooij (2021). Source: Cefas Includes Crown copyright, Cefas 2023.