A PDF map that shows the counties and unitary authorities in the United Kingdom as at 1 April 2023. (File Size - 583 KB)

The Development Advice Map (DAM) shows areas at risk of flooding from rivers and the sea for the purposes of land-use planning. The DAM supports Planning Policy Wales and Technical Advice Note (TAN) 15 to guide new development away from areas at risk of flooding wherever possible. Together, they form a precautionary framework to guide planning decisions. The DAM should be considered as a trigger for identifying which development proposals may need to undertake a more detailed assessment of flooding risks and consequences in line with the policy advice set out in TAN15. Zone C (the 1000yr extreme flood outline) was last updated in January 2020. No further updates are planned to the DAM and you are advised to contact Natural Resources Wales (NRW) about the availability of more up-to-date information. Zone B (areas known to have flooded in the past) was originally published in 2004 and revised in 2017. When using the DAM the preview defaults to Zone B only. You will need to use the legend control to switch on the other zones. NRW has developed a new Flood Map for Planning (FMfP) which was published in September 2021. This indicates undefended flood extents over the next 100yrs taking into account the impacts of climate change. This will replace the DAM in June 2023. Although the Flood Map for Planning is not referred to in current planning policy, it can be considered as the most up to date information on flooding risks. Due to technical Issues the Web Services and Map Browser for the Development Advice Map are currently not available. If you wish to browse the data see the NRW Flood Risk Viewer https://maps.cyfoethnaturiolcymru.gov.uk/Html5Viewer/Index.html?configBase=https://maps.cyfoethnaturiolcymru.gov.uk/Geocortex/Essentials/REST/sites/Flood_Risk/viewers/Flood_Risk/virtualdirectory/Resources/Config/Default&layerTheme=2

Various data recorded by Historic England relating to aerial investigation and mapping projects. N.B. This is a dynamic dataset that is constantly evolving, not only with the addition of newly completed projects, but also with the reassessment of some earlier projects. See https://historicengland.org.uk/research/methods/airborne-remote-sensing/aerial-investigation/ for further details of Historic England's work with aerial sources.It's currently not possible to provide download access to the earlier hand drawn projects, which are only available as raster files, but these can be viewed via the Aerial Archaeology Mapping Explorer. We aim to create vector monument polygons for these features as the next phase of the project.More information and help with these the layers Detailed MappingThis layer shows the detailed mapping of archaeological features derived from aerial imagery; this includes photographic imagery from many decades taken specifically for archaeological purposes, as well as other photography taken for other reasons and airborne lidar. The data are symbolised initially based on their physical form i.e. cut/negative (e.g. pit, ditch etc) or built/positive (e.g. mound, bank etc) .

    Field name
    Field alias
    Description
    Mandatory Y/N


    LAYER
    LAYER
    The layer used for mapping
    Y


    PROJECT
    PROJECT
    Project name
    Y

    PERIOD
    PERIOD
    The presumed date/period assigned to the feature (terminology from FISH thesaurus)
    Y


    MONUMENT_TYPE
    MONUMENT_TYPE
    The presumed type/function assigned to the feature (terminology from FISH thesaurus)
    Y


    EVIDENCE_1
    EVIDENCE_1
    The primary evidence for the feature e.g. cropmark, earthwork etc (terminology from FISH thesaurus)
    Y


  SOURCE_1
    SOURCE_1
    The primary source for the feature e.g. aerial photo reference, documentary source etc
    Y


  EVIDENCE_2
    EVIDENCE_2
    Where available the latest evidence for the feature e.g. cropmark, earthwork etc (terminology from FISH thesaurus) N.B. This was the latest evidence seen and does not necessarily represent the current status of the feature.
    N


  SOURCE_2
    SOURCE_2
    Where available the latest source for the feature N.B. This was the latest evidence seen and does not necessarily represent the current status of the feature.
    N


    HE_UID
    HE_UID
    Composite of Unique identifier(s) used by Historic England
    Y

    HER_NO
    HER_NO
    Composite of Unique identifier(s) used by Historic Environment Records
    N

    DHEUID_1
    DHEUID_1
    Primary Unique identifier used by Historic England
    Y

    DHEUID_2
    DHEUID_2
    Secondary Unique identifier used by Historic England. Used where a feature may relate to more than one Historic England record
    N

    DHEUID_3 ~ 5
    DHEUID_3 ~ 5
    Additional Unique identifier used by Historic England. Used where a feature may relate to more than one Historic England record
    N


    HE_URL1
    HE_URL1
    URL link to the relevant Historic England record in Heritage Gateway
    Y

    HE_URL2
    HE_URL2
    URL link to the relevant Historic England record in Heritage Gateway
    N

    HE_URL3 ~ 5
    HE_URL3 ~ 5
    URL link to the relevant Historic England record in Heritage Gateway
    N


    DHERNO_1
    DHERNO_1
    Primary unique identifier used by the relevant Historic Environment Record (HER)
    Y


    DHERNO_2
    DHERNO_2
    Secondary unique identifier used by the relevant Historic Environment Record. Used where a feature may relate to more than one HER record
    N


    DHERNO_3 ~ 5
    DHERNO_3 ~ 5
    Tertiary unique identifier used by the relevant Historic Environment Record. Used where a feature may relate to more than one HER record
    N

    DHERPREF_1
    DHERPREF_1
    Primary alternative unique identifier used by the relevant Historic Environment Record. Some HERs use the same number for both the HER No. and the reference to link to the record; others use different numbers and give them different names e.g MonUID
    Y

    DHERPREF_2
    DHERPREF_2
    Secondary alternative unique identifier used by the relevant Historic Environment Record. Some HERs use the same number for both the HER No. and the reference to link to the record; others use different numbers and give them different names e.g MonUID Used where a feature may relate to more than one HER record
    N

    DHERPREF_3 ~ 5
    DHERPREF_3 ~ 5
    Additional alternative unique identifier used by the relevant Historic Environment Record. Some HERs use the same number for both the HER No. and the reference to link to the record; others use different numbers and give them different names e.g MonUID Used where a feature may relate to more than one HER record
    N


    HER_LINK_1
    HER_LINK_1
    URL link to the relevant Historic Environment Record (HER) record in Heritage Gateway
    Y


    HER_LINK_2
    HER_LINK_2
    URL link to the relevant Historic Environment Record (HER) record in Heritage Gateway
    N


    HER_LINK_3 ~ 5
    HER_LINK_3 ~ 5
    URL link to the relevant Historic Environment Record (HER) record in Heritage Gateway
    N

The data are symbolised initially based on their physical form i.e. cut/negative (e.g. pit, ditch etc) or built/positive (e.g. mound, bank etc)

    Layer name
    Colour (Hex)
    Description

Bank #A50026 Used to outline banks, platforms, mounds and spoil heaps.

Ditch #313695 Used to outline cut features such as ditches, ponds, pits or hollow ways.

    Extent of Feature
    #FDAE61 (Dashes)
    Used to depict the extent of large area features such as airfields, military camps, or major extraction.


    Ridge and Furrow Alignment
    #74ADD1
    Line or arrow(s) (hand drawn not a symbol) depicting the direction of the rigs in a block of ridge and furrow.


    Ridge and Furrow Area
    #74ADD1 (Dots)
    Used to outline a block of ridge and furrow .


    Slope
    #4575B4
     The top of the “T” indicates the top of slope and the body indicates the length and direction of the slope. Used to depict scarps, edges of platforms and other large earthworks.

    Structure
    #F46D43
     Used to outline structures including stone, concrete, metal and timber constructions e.g., buildings, Nissen huts, tents, radio masts, camouflaged airfields, wrecks, fish traps, etc.

You can find instructions on how to create a QGIS style file (.qml) to recreate our mapping symbology in QGIS via our Open Data Downloads page under Aerial Investigation Mapping data.Monument ExtentsThis layer shows the general extent of the monuments, created from multiple sources, primarily aerial imagery, but referring to other sources such as earthwork surveys, documentary evidence and any information available from the relevant Historic Environment Record etc. This differs from the 'Detailed Mapping' layer, which shows the individual features as they appear on the ground.

    Field name
    Field alias
    Description
    Mandatory Y/N


    LAYER
    LAYER
    The layer used for mapping
    Y

    HE_UID
    HE_UID
    Composite of Unique identifier(s) used by Historic England
    Y

    HER_NO
    HER_NO
    Composite of Unique identifier(s) used by Historic Environement Records
    N


    HE_UID1
    HE_UID1
    Primary Unique identifier used by Historic England
    Y

    HE_UID2
    HE_UID2
    Secondary Unique identifier used by Historic England. Used where a feature may relate to more than one Historic England record
    N

    HE_UID3 ~ 5
    HE-UID3 ~ 5
    Additional Unique identifier used by Historic England. Used where a feature may relate to more than one Historic England record
    N


    HE_URL1
    HE_URL1
    URL link to the relevant Historic England record in Heritage Gateway
    Y

    HE_URL2
    HE_URL2
    URL link to the relevant Historic England record in Heritage Gateway
    N

    HE_URL3 ~ 5
    HE_URL3 ~ 5
    URL link to the relevant Historic England record in Heritage Gateway
    N


    HERNO_1
    HERNO_1
    Primary unique identifier used by the relevant Historic Environment Record (HER)
    Y


    HERNO_2
    HERNO_2
    Secondary unique identifier used by the relevant Historic Environment Record. Used where a feature may relate to more than one HER record
    N


    HERNO_3 ~ 25
    HERNO_3 ~ 25
    Tertiary unique identifier used by the relevant Historic Environment Record. Used where a feature may relate to more than one HER record
    N

    HERPREF_1
    HERPREF_1
    Primary alternative unique identifier used by the relevant Historic Environment Record. Some HERs use the same number for both the HER No. and the reference to link to the record; others use different numbers and give them different names e.g MonUID
    Y

    HERPREF_2
    HERPREF_2
    Secondary alternative unique identifier used by the relevant Historic Environment Record. Some HERs use the same number for both the HER No. and the reference to link to the record; others use different numbers and give them different names e.g MonUID Used where a feature may relate to more than one HER record
    N

    HERPREF_3 ~ 25
    HERPREF_3 ~ 25
    Additional alternative unique identifier used by the relevant Historic Environment Record. Some HERs use the same number for both the HER No. and the reference to link to the record; others use different numbers and give them different names e.g MonUID Used where a feature may relate to more than one HER record
    N


    HER_LINK_1
    HER_LINK_1
    URL link to the relevant Historic Environment Record (HER) record in Heritage Gateway
    Y


    HER_LINK_2
    HER_LINK_2
    URL link to the relevant Historic Environment Record (HER) record in Heritage Gateway
    N


    HER_LINK_3 ~ 25
    HER_LINK_3 ~ 25
    URL link to the relevant Historic Environment Record (HER) record in Heritage Gateway
    N


    PROJECT
    project
    Project name
    Y

Project AreaThis layer shows the extent of the

The Historic Flood Map is a GIS layer showing the maximum extent of individual Recorded Flood Outlines from river, the sea and groundwater springs that meet a set criteria. It shows areas of land that have previously been subject to flooding in England. This excludes flooding from surface water, except in areas where it is impossible to determine whether the source is fluvial or surface water but the dominant source is fluvial.

The majority of records began in 1946 when predecessor bodies to the Environment Agency started collecting detailed information about flooding incidents, although we hold limited details about flooding incidents prior to this date.

If an area is not covered by the Historic Flood Map it does not mean that the area has never flooded, only that we do not currently have records of flooding in this area that meet the criteria for inclusion. It is also possible that the pattern of flooding in this area has changed and that this area would now flood or not flood under different circumstances. Outlines that don’t meet this criteria are stored in the Recorded Flood Outlines dataset.

The Historic Flood Map takes into account the presence of defences, structures, and other infrastructure where they existed at the time of flooding. It will include flood extents that may have been affected by overtopping, breaches or blockages.

Flooding is shown to the land and does not necessarily indicate that properties were flooded internally.

A free mapping tool that allows you to create a thematic map of London without any specialist GIS skills or software - all you need is Microsoft Excel. Templates are available for London’s Boroughs and Wards. Full instructions are contained within the spreadsheets. Macros The tool works in any version of Excel. But the user MUST ENABLE MACROS, for the features to work. There a some restrictions on functionality in the ward maps in Excel 2003 and earlier - full instructions are included in the spreadsheet. To check whether the macros are enabled in Excel 2003 click Tools, Macro, Security and change the setting to Medium. Then you have to re-start Excel for the changes to take effect. When Excel starts up a prompt will ask if you want to enable macros - click yes. In Excel 2007 and later, it should be set by default to the correct setting, but if it has been changed, click on the Windows Office button in the top corner, then Excel options (at the bottom), Trust Centre, Trust Centre Settings, and make sure it is set to 'Disable all macros with notification'. Then when you open the spreadsheet, a prompt labelled 'Options' will appear at the top for you to enable macros. To create your own thematic borough maps in Excel using the ward map tool as a starting point, read these instructions. You will need to be a confident Excel user, and have access to your boundaries as a picture file from elsewhere. The mapping tools created here are all fully open access with no passwords. Copyright notice: If you publish these maps, a copyright notice must be included within the report saying: "Contains Ordnance Survey data © Crown copyright and database rights." NOTE: Excel 2003 users must 'ungroup' the map for it to work.

This is the record for Limestone Pavement which forms a part of the Habitat Networks (Individual) (England) dataset (link below).

The habitat network maps are developed around 4 distinct habitat components sets and include 4 distinct network zones where action may be undertaken to build greater ecological resilience. The different elements of the maps are described below: Habitat Components; • The location of existing patches of a specific habitat for which the network is developed. This is termed the ‘Primary habitat’ e.g. lowland heathland. The main baseline data used for this is the Priority Habitat Inventories (PHIv2.2). • The location of additional habitat that naturally form mosaics with the primary habitat e.g. habitats that are most likely to form ecological mosaics possibly used by species associated with the primary habitat. This is termed the ‘Associated habitat’. The main baseline data used for this is the Priority Habitat Inventories (PHIv2.2). • The locations where habitat creation or restoration is known to occur, this is primarily sites under relevant agri-environment options. This is termed the ‘Habitat creation’ • Sites where data suggests small fragments of the primary habitat or degraded habitat exists and where restoration may be possible, this is primarily developed from information held within the current PHI v2.2. This is termed the ‘Restorable habitat’.
Network Zones; • Land within close proximity to the existing habitat components that are more likely to be suitable for habitat re-creation for the particular habitat. These areas are primarily based on soils but in many cases has been refined by also using other data such as hydrology, altitude and proximity to the coast. This is termed the ‘Network Enhancement Zone 1’. • Land within close proximity to the existing habitat components that are unlikely to be suitable for habitat re-creation but where other types of habitat may be created or land management may be enhanced including delivery of suitable Green Infrastructure. This is termed the ‘Network Enhancement Zone 2’. • Land immediately adjoining existing habitat patches that are small or have excessive edge to area ratio where habitat creation is likely to help reduce the effects of habitat fragmentation. This is termed the ‘Fragmentation Action Zone’. • Land within relatively close proximity to the Network Enhancement Zones 1 & 2 that are more likely to be suitable for habitat creation for the particular habitat and identifying possible locations for connecting and linking up networks across a landscape. This is termed the ‘Network Expansion Zone’.
Note: For some habitat networks not all of the habitat components or all the action zones are identified either because the data does not exist or the habitat does not lend itself to identifying particular types of action. Further details are outlined in the Habitat Network Mapping Guidance document. The Network boundary is drawn around the 4 habitat components using a variable buffering process with a generalised distance of 500m although 1km was used for Blanket Bog. As the boundary for each habitat network is tightly drawn around the existing patches of habitat this means that at a national scale the habitat network is composed of a series of smaller ‘networks’ that encapsulates one or more clusters of existing habitat patches. These may be considered as ‘network segments’. The Network Expansion Zone has been drawn around these segments to identify areas where additional action may be undertaken to build greater ecological resilience across the wider landscape.

An index to over 600 ground geophysical surveys carried out in the UK for a variety of projects. A large number of these surveys were done in conjunction with the DTI Mineral Reconnaissance Programme in the 1970's and 80's, and many others were carried out at the request of BGS field mapping groups. Information held describes the survey objective, location of measurements, geophysical methods and equipment used, reports and publications, storage locations of data and results (for analogue and digital data), dates and personnel. There are two datasets; one shows the outline of the survey areas, and the other shows the actual survey lines within each area. This layer is only available at specific zoom levels. Please zoom to a larger scale to interrogate the map.

The intention was not to touch the content of the existing maps, only where there were difficulties with connection at the edges. In the first instance, it was investigated where the drillings are located in those specific problem border strips. Before connecting the different map sheets, the interpretations of the respective boreholes were carefully examined and, if necessary, reinterpreted to make connections possible. Finally, 25 mapping units are distinguished on the resulting map. Each mapping unit is genetically and chronostratigraphically defined. The mapping units form the building blocks of the various profile types. A profile type is thus defined according to a well-defined sequence of the mapping units. However, to keep a profile type card legible, it is desirable to limit the number of units per profile type to eight (Mengling & Vinken, 1975). That maximum number of units has not been reached in any profile type. The original mapping units were defined differently depending on the order holder who performed the mapping (1/50,000), or even from card sheet to card sheet prepared by the same order holder. Some mapping units were named lithostratigraphically, others were defined lithologically. In addition, the various order holders generally used different lithostratigraphic designations for the same mapping unit. With the objective in mind that this overview map is primarily intended for non-geologists, a simple definition of the mapping units has been opted for. The mapping units are therefore defined according to the genesis and age of the deposits. Based on the genesis, four groups are distinguished, namely fluvial deposits (F), aeolian deposits (E), tidal deposits (G) and slope deposits (H). As far as Quaternary chronostratigraphy is concerned, two classifications are followed in Flanders. A first group follows the international classification as established by the International Union of Geological Sciences (IUGS, 2000). The Quaternary begins 1.81 million years ago. However, that determination is based only on the study of marine sediments originating from southern Italy (Aguirre & Pasini, 1985). The maps drawn up by the Catholic University of Leuven follow this classification. A second group follows the Northwest European classification. The Quaternary, more specifically the Pleistocene, was originally defined in northwestern Europe as the period when cold influences clearly left their mark on the deposits (Lyell, 1839). The Quaternary therefore started with a cold phase about 2.6 million years ago. This phase is characterized, among other things, by the disappearance of subtropical plants, by changes in mammals and by the presence of shells and other organisms in the North Sea that today only occur in colder areas. All these changes virtually coincide with the reversal of the Earth's magnetic field, called the Gauss-Matuyama boundary. Based on these elements, the author of this Quaternary geological overview map, as well as geologists in Belgium, the Netherlands, Great Britain and other countries, uses the original definition of the Quaternary. The "Plenary Session of the ICS in Kyoto (1992)" has shown that the strong movement within the group of Quaternary geologists to redefine the lower limit of the Quaternary to the former limit of about 2.6 million years is bearing fruit. A joint group of Quaternary and Neogene specialists is re-examining the problem. Since both classifications are used in Flanders, a chronostratigraphic overview table has been drawn up when this map was drawn up, on which both classifications are presented so that the user always has a guideline to place the information in time.

The habitat network maps seek to apply the best evidence and principles and to use the best available nationally consistent spatial data. The habitat network maps are developed around 4 distinct habitat components sets and include 4 distinct network zones where action may be undertaken to build greater ecological resilience. The different elements of the maps are described below: Habitat Components; • The location of existing patches of a specific habitat for which the network is developed. This is termed the ‘Primary habitat’ e.g. lowland heathland. The main baseline data used for this is the Priority Habitat Inventories (PHIv2.2). • The location of additional habitat that naturally form mosaics with the primary habitat e.g. habitats that are most likely to form ecological mosaics possibly used by species associated with the primary habitat. This is termed the ‘Associated habitat’. The main baseline data used for this is the Priority Habitat Inventories (PHIv2.2). • The locations where habitat creation or restoration is known to occur, this is primarily sites under relevant agri-environment options. This is termed the ‘Habitat creation’ • Sites where data suggests small fragments of the primary habitat or degraded habitat exists and where restoration may be possible, this is primarily developed from information held within the current PHI v2.2. This is termed the ‘Restorable habitat’.
Network Zones; • Land within close proximity to the existing habitat components that are more likely to be suitable for habitat re-creation for the particular habitat. These areas are primarily based on soils but in many cases has been refined by also using other data such as hydrology, altitude and proximity to the coast. This is termed the ‘Network Enhancement Zone 1’. • Land within close proximity to the existing habitat components that are unlikely to be suitable for habitat re-creation but where other types of habitat may be created or land management may be enhanced including delivery of suitable Green Infrastructure. This is termed the ‘Network Enhancement Zone 2’. • Land immediately adjoining existing habitat patches that are small or have excessive edge to area ratio where habitat creation is likely to help reduce the effects of habitat fragmentation. This is termed the ‘Fragmentation Action Zone’. • Land within relatively close proximity to the Network Enhancement Zones 1 & 2 that are more likely to be suitable for habitat creation for the particular habitat and identifying possible locations for connecting and linking up networks across a landscape. This is termed the ‘Network Expansion Zone’.
Note: For some habitat networks not all of the habitat components or all the action zones are identified either because the data does not exist or the habitat does not lend itself to identifying particular types of action. Further details are outlined in the Habitat Network Mapping Guidance document. The Network boundary is drawn around the 4 habitat components using a variable buffering process with a generalised distance of 500m although 1km was used for Blanket Bog. As the boundary for each habitat network is tightly drawn around the existing patches of habitat this means that at a national scale the habitat network is composed of a series of smaller ‘networks’ that encapsulates one or more clusters of existing habitat patches. These may be considered as ‘network segments’. The Network Expansion Zone has been drawn around these segments to identify areas where additional action may be undertaken to build greater ecological resilience across the wider landscape. Attribution statement: © Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right [year].

This dataset is refreshed on a weekly basis from the datasets the team works on daily.Last update date: 18 July 2025.National Highways Operational Highway Boundary (RedLine) maps out the land belonging to the highway for the whole Strategic Road Network (SRN). It comprises two layers; one being the an outline and another showing the registration status / category of land of land that makes up the boundary. Due to the process involved in creating junctions with local highway authority (LHA) roads, land in this dataset may represent LHA highway (owned by National Highways but the responsibility of the LHA to maintain). Surplus land or land held for future projects does not form part of this dataset.The highway boundary is derived from:Ordnance Survey Mastermap Topography,HM Land Registry National Polygon Service (National Highway titles only), andplots researched and digitised during the course of the RedLine Boundary Project.The boundary is split into categories describing the decisions made for particular plots of land. These categories are as follows:Auto-RedLine category is for plots created from an automated process using Ordnance Survey MasterMap Topography as a base. Land is not registered under National Highways' name. For example, but not limited to, unregistered ‘ancient’ highway vested in Highways England, or bridge carrying highways over a rail line.NH Title within RedLine category is for plots created from Land Registry Cadastral parcels whose proprietor is National Highways or a predecessor. Land in this category is within the highway boundary (audited) or meets a certain threshold by the algorithm.NH Title outside RedLine category is for plots created in the same way as above but these areas are thought to be outside the highway boundary. Where the Confidence is Low, land in this category is yet to be audited. Where the Confidence is High, land in this category has been reviewed and audited as outside our operational boundary.National Highways (Technician) Data category is for plots created by National Highways, digitised land parcels relating to highway land that is not registered, not yet registered or un-registerable.Road in Tunnel category, created using tunnel outlines from Ordnance Survey MasterMap Topography data. These represent tunnels on Highways England’s network. Land is not registered under National Highways' name, but land above the tunnel may be in National Highways’ title. Please refer to the definitive land ownership records held at HM Land Registry.The process attribute details how the decision was made for the particular plot of land. These are as follows:Automated category denotes data produced by an automated process. These areas are yet to be audited by the company.Audited category denotes data that has been audited by the company.Technician Data (Awaiting Audit) category denotes data that was created by National Highways but is yet to be audited and confirmed as final.The confidence attribute details how confident you can be in the decision. This attribute is derived from both the decisions made during the building of the underlying automated dataset as well as whether the section has been researched and/or audited by National Highways staff. These are as follows:High category denotes land that has a high probability of being within the RedLine boundary. These areas typically are audited or are features that are close to or on the highway.Moderate category denotes land that is likely to be within the highway boundary but is subject to change once the area has been audited.Low category denotes land that is less likely to be within the highway boundary. These plots typically represent Highways England registered land that the automated process has marked as outside the highway boundary.Please note that this dataset is indicative only. For queries about this dataset please contact the GIS and Research Team.

Strategi is detailed digital map data, ideal for applications requiring an overview of geographical information on England, Scotland and Wales. It is derived from the Ordnance Survey 1:250 000 scale topographic database and provides mapping for applications requiring a regional overview.

Geographical features within Strategi are represented as vector (point and line) data, enabling you to link your business information to relevant features on the map for planning purposes and statistical analysis.

A selection of template maps

Daily maps to show the number of confirmed Foot and Mouth Disease (FMD) cases and Form A (Suspected FMD premises) within each infected area for GB. Attribution statement:

A PDF map of the London boroughs as at December 2017. The map shows the London boroughs split into inner London and outer London. (File Size - 227 KB).

Recorded Flood Outlines is a GIS layer which shows all our records of historic flooding from rivers, the sea, groundwater and surface water. Each individual Recorded Flood Outline contains a consistent list of information about the recorded flood.

Records began in 1946 when predecessor bodies to the Environment Agency started collecting detailed information about flooding incidents, although we may hold limited details about flooding incidents prior to this date.

The absence of coverage by Recorded Flood Outlines for an area does not mean that the area has never flooded, only that we do not currently have records of flooding in this area.

It is also possible that the pattern of flooding in this area has changed and that this area would now flood or not flood under different circumstances.

The Recorded Flood Outlines take into account the presence of defences, structures, and other infrastructure where they existed at the time of flooding. It includes flood extents that may have been affected by overtopping, breaches or blockages.

Any flood extents shown do not necessarily indicate that properties were flooded internally.

A companion dataset Historic Flood Map contains a subset of these Recorded Flood Outlines which satisfy a certain criteria.

The Coastal Overview data layers identifies the lead authority for the management of discrete stretches of the English coast as defined by the Seaward of the Schedule 4 boundary of the Coastal Protection Act 1949. The data are intended as a reference for GIS users and Coastal Engineers with GIS capability to identify the responsible authority or whether the coast is privately owned. The information has been assigned from the following sources, listed in by preference: Shoreline Management Plans 1; Environment Agency’s RACE database; Consultation with Coastal Business User Group and Local Authority Maritime records where possible. A confidence rating is attributed based on where the data has been attributed from and the entry derived from the source data. The following data is intended as a reference document for GIS users and Coastal Engineers with GIS capability to identify the responsible authority and the assigned EA Coastal Engineer so as to effectively manage the coast for erosion and flooding. The product comprises 3 GIS layers that are based on the OS MasterMap Mean High Watermark and consists of the following data layers that are intended to be displayed as with the confidence factor that the information is correct. Coastal Overview Map [Polyline] –details the Lead Authority, EA Contact and other overview information for coast sections; Coastal Overview Map [Point] – shows the start point of the discrete stretch of coast and the lead authority; and Coastal Legislative Layer [Polyline] - represents the predominant risk; flooding or erosion, which are assigned to each section of the coastline. Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved.Contains Ordnance Survey data © Crown copyright and database rights

A series of approximately 3250 navigational charts covering the world. The series is maintained by Admiralty Notices to Mariners issued every week. New editions or new charts are published as required. Two thirds of the series are now available in metric units.

In areas where the United Kingdom is, or until recently has been, the responsible hydrographic authority - i.e. Home Waters, some Commonwealth countries, British colonies, and certain areas like the Gulf, Red Sea and parts of the eastern Mediterranean - the Admiralty charts afford detailed cover of all waters, ports and harbours. These make up about 30 per cent of the total series. Modern charts in these areas usually have a source data diagram showing the sources from which the chart was compiled. The quantity and quality of the sources vary due to age and the part of the world the chart depicts. The other 70 per cent are derived from information on foreign charts, and the Admiralty versions are designed to provide charts for ocean passage and landfall, and approach and entry to the major ports.

The series contains charts on many different scales, but can be divided very broadly as follows:

Route planning 1:10 million Ocean planning 1:3.5 million Coast approach or landfall identification 1:1 million Coasting 1:300,000 to 1:200,000 Intricate or congested coastal waters 1:150,000 to 1:75,000 Port approach 1:50,000 or larger Terminal installation 1:12,500 or larger

Charts on scales smaller than 1:50,000, except in polar regions, are on Mercator projection. Since 1978 all charts on 1:50,000 and larger have been produced on Transverse Mercator projection. Prior to 1978 larger scale charts were on a modified polyconic projection referred to as 'gnomonic', not to be confused with the true Gnomonic projection.

Most of the detail shown on a chart consists of hydrographic information - soundings (selected spot depths) in metres (on older charts in fathoms or feet) reduced to a stated vertical datum; depth contours; dredged channels; and the nature of the seabed and foreshore. Features which present hazards to navigation, fishing and other marine operations are also shown. These include underwater rocks and reefs; wrecks and obstructions; submarine cables and pipelines and offshore installations. Shallow water areas are usually highlighted with pale blue tint(s). Also shown are aids established to assist the navigator - buoys, beacons, lights, fog signals and radio position finding and reporting services; and information about traffic separation schemes, anchorages, tides, tidal streams and magnetic variation. Outline coastal topography is shown especially objects of use as fixing marks. As a base for navigation the chart carries compass roses, scales, horizontal datum information, graduation (and sometimes land map grids), conversion tables and tables of tidal and tidal stream rates.

This dataset is now retired and replaced with the following:

Reservoir Flood Extents - Fluvial Contribution (National) https://environment.data.gov.uk/dataset/db114020-465a-412b-b289-be393d995a75 Reservoir Flood Extents - Wet Day (National) https://environment.data.gov.uk/dataset/d81646cf-37e5-4e71-bbcf-b7d5b9ca3a1c Reservoir Flood Extents - Dry Day (National) https://environment.data.gov.uk/dataset/c66ee97f-49d2-454e-9a19-d48a47bd22ad

This is the simplified version of the outline Reservoir Flood Map Outline (Speed) as shown on the gov.uk Flood Risk website. This is one of 3 available "Risk of Flooding from Reservoirs" Web Mapping Services; Maximum Flood Depth, Maximum Flood Extent, Maximum Flood Speed.

. Simplified in this context refers to the fact that unlike the detailed product, individual reservoir flood map speeds are not shown separately, and one merged outline shows the maximum flood speeds for all reservoir flooding scenarios together.

This is a data layer showing a combined reservoir flood map for 2,092 Large Raised Reservoirs including attributed data. The data shows the maximum speed of flooding should reservoirs be breached, and although the location of each reservoir can be inferred they are not explicitly shown on the maps. The Reservoir Flood Map Maximum Flood Outline (Speed) in its simplified form is referred to externally as Risk of Flooding from Reservoirs – Maximum Flood Speed.

The Reservoir Flood Map Outline (Speed) shows the maximum flood speeds that might be expected 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 flooding would create speeds this high. 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.

Information Warning: Only the Maximum extent, velocity and depth categories are available under the standard OGL terms when supplied as a WMS. This excludes the underlying data. Attribution statement: © Environment Agency copyright and/or database right 2019. All rights reserved.

The map based index includes outlines for some 8,000 opencast coal prospecting sites dating from the 1940s until the mid 1990s. The index leads to information on the records of some 1 million boreholes (additional to those shown in the Borehole Records layer) drilled during site exploration and also the accompanying plans and other data, all filed in 3,618 boxes. The sites include those that have been drilled and not worked and also those that have been exploited. The original data, hardcopy maps, were received from the Coal Authority in 2001.