Statutory Main Rivers Map is a spatial (polyline) dataset that defines statutory watercourses in England designated as Main Rivers by the Environment Agency.

Watercourses designated as ‘main river’ are generally the larger arterial watercourses. The Environment Agency has permissive powers, but not a duty, to carry out maintenance, improvement or construction work on designated main rivers.

All other open water courses in England are determined by statute as an ‘ordinary watercourse’. On these watercourses the Lead Local flood Authority or, if within an Internal Drainage District, the Internal Drainage Board have similar permissive powers to maintain and improve.

The Statutory Main River Map Variations dataset defines proposed changes to the Statutory Main River Map.

Statutory Main Rivers Map defines statutory watercourses in England designated as Main Rivers by Environment Agency.

Watercourses designated as ‘main river’ are generally the larger arterial watercourses. The Environment Agency has permissive powers, but not a duty, to carry out maintenance, improvement or construction work on designated main rivers.

All other open water courses in England are determined by statute as an ‘ordinary watercourse’. On these watercourses the Lead Local flood Authority or, if within an Internal Drainage District, the Internal Drainage Board have similar permissive powers to maintain and improve.

The Environment Agency notifies the public and interested parties of our intentions to make a change to the statutory main river map and decides which watercourses are designated as Main Rivers following a legal process to determine and publish changes.

The change, or variation, to the Statutory Main River Map is either a deletion (also known as a demainment) or an addition (also known as an enmainment).

There are two reasons for a change to the Statutory Main River Map - Designation and Factual.

Designation changes are required when we make a decision to lengthen or shorten the section of a river designated as a 'main river'. These changes will determine which risk management authority may carry out maintenance, improvement or construction work on the watercourse. These changes result also in differing legislation applying to the riparian owner and others with an interest.

Factual changes may be required to update the map to represent the real position of the watercourse. They do not involve any changes of authority or management. Typical examples of factual changes are when: a watercourse has changed course naturally, a watercourse has been diverted or a survey of a culvert shows a different alignment.

A change to the Statutory Main River Map goes through the following stages (identified as Status within the data):

• Draft
• Consultation
• Pending Determination
• Determination
• Appeals
• Pending Appeals
• Pending Implementation
• Implemented (Month and Year)

Data shows the location of Priority Habitat Chalk rivers and Streams. Replaces the existing 1:50,000 scale data.Based on Environment Agency Detailed River Network (DRN) version 3. All fields from DRN have been retained. This subset of chalk rivers uses the old 1:50,000 Biodiversity Action Plan (BAP) chalk river data, BGS geology, WWF report "The State of England’s Chalk Streams" and stakeholder knowledge to produce an updated chalk river network for England.Full metadata can be viewed on data.gov.uk (to follow).

This dataset comprises river centrelines, digitised from OS 1:50,000 mapping. It consists of four components: rivers; canals; surface pipes (man-made channels for transporting water such as aqueducts and leats); and miscellaneous channels (including estuary and lake centre-lines and some underground channels). This dataset is a representation of the river network in Great Britain as a set of line segments, i.e. it does not comprise a geometric network.

One of the two datasets that make up the Priority River Habitat Map. Consists of rivers and streams that exhibit a high degree of naturalness. The naturalness classification used to map priority river habitat is based on recent work to review the river SSSI series. It evaluates four main components of habitat integrity: hydrological, physical, physico-chemical (water quality) and biological. An additional classification of the naturalness of headwaters (defined as streams with a catchment area of <10km2 to coincide with WFD typology boundaries) uses land cover data as a surrogate for direct information on river habitat condition (information which is generally lacking on headwaters). Streams and rivers operating under natural processes, free from anthropogenic impact and with a characteristic and dynamic mosaic of small-scale habitats that supports characteristic species assemblages (including priority species), are the best and most sustainable expression of river ecosystems. Key elements are: a natural flow regime; natural nutrient and sediment delivery regimes; minimal physical modifications to the channel, banks and riparian zone; natural longitudinal and lateral hydrological and biological connectivity; an absence of non-native species; low intensity fishery activities. These conditions provide the best defence against climate change, maximising the ability of riverine ecosystems to adapt to changing conditions. They also provide the most valuable and effective transitional links with other priority habitats, including lakes, mires and coastal habitats. In English rivers and streams, high levels of naturalness are rare.Full metadata can be viewed on data.gov.uk.

The objective of the priority habitat map in England is to:• help organisations protect the most natural remaining examples of rivers from further impacts on natural processes, and • highlight any aspects of habitat integrity (hydrological, chemical, physical, biological) that could most usefully be improved. The priority river habitat map that has been produced is an English interpretation of the UK definition of priority river habitat, focusing on naturalness as the principal criterion in recognition of the vital importance of natural processes in delivering sustainable riverine habitats and supporting characteristic biodiversity.Full metadata can be viewed on data.gov.uk.

Riparian Shade data from the Environment Agency. Shows relative shading of rivers and streams by vegetation and topography. Areas with least shade are ideal areas for tree planting to provide a benefit to freshwater ecology.Tile Map Service showing national coverage down to sub-catchment scale (ca. 1:18,000)For larger scales, add in the Riparian Shade Detail layer to your map and swap the visible range over at Neighbourhood scale.

Historic Flood Map is a GIS layer showing the maximum extent of all individual Recorded Flood Outlines from river, the sea and groundwater springs and shows areas of land that have previously been subject to flooding in England. 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. This dataset differs from the Recorded Flood Outline dataset in that it contains only those flood outlines that are 'considered and accepted' if the following criteria are met:photographic/video evidence with the location referencedrecorded flood levels with the location referencedevidence that the outline represents the time of peak water level (for example date / time stamped photo)evidence that the source of flooding is from rivers, the sea or groundwater and not surface water/overland runoff. The absence of coverage by the Historic Flood Map 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 under different circumstances. The Historic Flood Map will take into account of 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 shown to the land and does not necessarily indicate that properties were flooded internally. The Historic Flood Map consists of spatial data only.

Two subsets of data derived from national data sets collected by the Environment Agency and Natural Resources Wales (© Environment Agency copyright and database right 2023; Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved) which were supplied under the Open Government Licence https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ The full data sets can be accessed from the Environment Agency's Ecology and Fish Data Explorer (https://environment.data.gov.uk/ecology/explorer/) and NBNAtlas for Natural Resources Wales data (https://registry.nbnatlas.org/public/show/dr2116).Data set 1: england_wales_t1_t2_t3.csvData set for creating maps of macroinvertebrate communities across England and Wales at three time points. Data comprise 13921 rows and seven columns:time = time period when data were collected: t1 = 1991-3, t2 = 2004-6, t3 = 2017-19site = site code, prefixed with 'S'.easting = x-coordinate of each site on the British National Gridnorthing = y-coordinates of each site on the British National GridYear = year the sample was collectedrichness = number of macroinvertebrate families present in the sampleca1.score = measure of macroinvertebrate community composition. Larger values indicate that a higher proportion of pollution-sensitive taxa are present.Data set 2: england_wales_SEM_GWR.csv Data set for running structural equation modelling and geographically-weighted regression analyses to explain macroinvertebrate community composition across England and Wales. Data comprise 3632 rows and 15 columns:Column 1: site = site code, prefixed with 'S'.Columns 2-3 (easting and northing) = x- and y-coordinates of each site on the British National GridColumn 4: year = year the macroinvertebrate sample was collectedColumns 5-9 (pH, temperature, BOD, nitrate, phosphate) are median values in the 12 months prior to an invertebrate sample for: pH, water temperature (degrees Celsius), biochemical oxygen demand (mg l-1), nitrate (mg l-1) and orthophosphate (mg l-1)Columns 10-12 (arable, imp.grass, urban) represent the percentage of the river's catchment covered by three different land cover types (arable agriculture, improved grassland, urban)Column 13 (scaled.med.discharge) is the annual median discharge at a site, divided by the catchment area; units = m3 s-1 km-2)Column 14: richness = number of macroinvertebrate families present in the sampleColumn 15: ca1.score = measure of macroinvertebrate community composition. Larger values indicate that a higher proportion of pollution-sensitive taxa are present.Research results based upon these data are published at https://doi.org/10.1016/j.scitotenv.2024.174369

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

OS Open Rivers is a generalised open water network showing the flow and the locations of rivers, streams, lakes and canals across the whole of Great Britain. The new product is part of the OS Open suite and is designed to be used with other OpenData product sets. It’s mapping that can help you question, visualise and share results quickly and clearly. With OS Open Rivers you can: Understand the water network at a ‘high level’ with generalised geometry and network connectivity.View a network of main rivers, identifying the main river course along its full length.Pin information on the connected network for personal or business use. Take an informed overview of a situation along the network to manage it strategically. Compare and monitor stretches of water. Share information, such as flood alerts and flood risk areas.The currency of this data is 04/2025 The coverage of the map service is GB. The map projection is British National Grid.

Priority habitats form part of the UK’s commitment to the International Convention on Biodiversity. Each country who signed up to to the Convention is required to define a range of habitats (and individual species) where action is a priority to protect and restore biodiversity, and then to take the necessary action. The UK’s list of priority habitats includes both river and lake habitats. Existing nationally generated maps of river/stream and lake restoration priorities are now being refined with stakeholders to become a mechanism for highlighting local priorities for different sorts of restoration of natural habitat function – hydrological, physical, chemical and biological. Any site that falls under the UK river and lake priority habitat definitions (which essentially means any river, stream or lake), and therefore warrants specific consideration, can be highlighted as a priority for restoration action, if the action restores natural function. Restoration of natural habitat function of rivers and streams can involve many different practical measures – 21 measures are explicitly itemised within the river and stream restoration priorities layer. These arePhysical RestorationEstablish riparian zone of natural vegetationEstablish at least patchy cover of native riparian treesAllow natural delivery and retention of woody materialRestore natural mire-stream transition zoneRestore natural lateral movement of the channelRemove in-channel structuresRestore natural channel bed levelsRemove flood embankmentsRe-establish alluvial woodlandRestore natural floodplain wetland mosaicHydrological RestorationRestore natural springflows to headwater streamsRestore natural flow regimeRemove land drainageChemical RestorationTarget critical pollution source areas of the catchmentEstablish naturally functioning habitat mosaics on critical areasEstablish effective soil/nutrient conservation regimes on critical areasBiological RestorationStrategic area-based control of non-native speciesReduce intensity of/halt fish stockingHalt fishery-driven removal of non-target native fish speciesReduce/halt in-channel and marginal weed cuttingEliminate heavy grazing of riparian vegetationThis dataset is in the early stages of development and will grow as more partners and stakeholders add their local knowledge. See the Priority Habitat data portal for more information on priority river (including streams) and lake habitats in England, how you can get involved in their protection and restoration, and in particular how you can provide information on the sites you visit to help prioritise conservation action. Other parts of the UK have their own approaches to conserving priority habitats as part of their separate biodiversity strategies.You can also view this data via the Data Display app on the Priority Habitat Data Portal which allows you to easily visualise the different measures being recommended at each site.

The Main River Consultation Area defines the easement associated with the Statutory Main River Map enabling Local Planning Authorities to check when statutory consultation with the Environment Agency is required in line with Town and Country Planning Act 2015.

Statutory Main Rivers Map defines statutory watercourses in England designated as Main Rivers by Environment Agency.

This new GIS layer is showing the 20 metre easements either side of Main Rivers using the Statutory Main River Map Variations including the river itself. A precautionary approach has been taken around structures like culverts, for example when there was a different line shown on our Asset Information Management System compared to the Main River line.

This dataset consists of an interactive map (and supporting guidance) containing background information that informs how we understand flood risk across the South East River Basin District. The map shows the River Basin District, component river basins and the coastline together with layers showing land use and topography.

This dataset together with equivalent datasets for each River Basin District, supports the Preliminary Flood Risk Assessment for England report which has been written to meet the requirements of the Flood Risk Regulations (2009) - to complete an assessment of flood risk and produce supporting maps of river catchments.

The Main River Consultation Area defines the easement associated with the Statutory Main River Map enabling Local Planning Authorities to check when statutory consultation with the Environment Agency is required in line with Town and Country Planning Act 2015. Statutory Main Rivers Map defines statutory watercourses in England designated as Main Rivers by Environment Agency. This new GIS layer is showing the 20 metre easements either side of Main Rivers using the Statutory Main River Map Variations including the river itself. A precautionary approach has been taken around structures like culverts, for example when there was a different line shown on our Asset Information Management System compared to the Main River line. Attribution statement: © Environment Agency copyright and/or database right 2025. All rights reserved.

This dataset consists of an interactive map (and supporting guidance) containing background information that informs how we understand flood risk across the Humber River Basin District. The map shows the River Basin District, component river basins and the coastline together with layers showing land use and topography.

This dataset together with equivalent datasets for each River Basin District, supports the Preliminary Flood Risk Assessment for England report which has been written to meet the requirements of the Flood Risk Regulations (2009) - to complete an assessment of flood risk and produce supporting maps of river catchments. Attribution statement: © Environment Agency copyright and/or database right 2018. All rights reserved. © Crown copyright and database rights 2018 Ordnance Survey 100024198 © Bluesky International Ltd/Getmapping PLC. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, British Antarctic Survey and British Geological Survey. © NERC (Centre for Ecology & Hydrology; British Antarctic Survey; British Geological Survey).
Contains public sector information licensed under the Open Government Licence v3.0.

SUMMARY Public transport stops across England, as of 04/02/2021. The type of stop, whether it is active or inactive, as well as notes provided by the recorder are given. The raw data, which includes more information than is provided in this version of the dataset, can be accessed here: National public transport access nodes - GOV.UK (www.gov.uk)

DATA SOURCE National Public Transport Access Nodes © Department for Transport. Contains public sector information licensed under the Open Government Licence v3.0. Available from: National public transport access nodes - GOV.UK (www.gov.uk). Data edited for publishing by Ribble Rivers Trust.

COPYRIGHT NOTICE© Department for Transport. Contains public sector information licensed under the Open Government Licence v3.0.CaBA HEALTH & WELLBEING EVIDENCE BASEThis dataset forms part of the wider CaBA Health and Wellbeing Evidence Base.

PLEASE NOTE: This dataset has been retired. It has been superseded by https://environment.data.gov.uk/dataset/04532375-a198-476e-985e-0579a0a11b47. Links to this data will be removed after April 2025. We encourage users to download this Flood Zones dataset if you would like to retain a comparison ability beyond this date.

The Flood Map for Planning (Rivers and Sea) includes several layers of information. This dataset covers Flood Zone 3. It is our best estimate of the areas of land at risk of flooding, when the presence of flood defences are ignored and covers land with a 1 in 100 (1%) or greater chance of flooding each year from Rivers; or with a 1 in 200 (0.5%) or greater chance of flooding each year from the Sea.

This dataset is designed to support flood risk assessments in line with Planning Practice Guidance; and raise awareness of the likelihood of flooding to encourage people living and working in areas prone to flooding to find out more and take appropriate action.

The information provided is largely based on modelled data and is therefore indicative rather than specific.

Locations may also be at risk from other sources of flooding, such as high groundwater levels, overland run off from heavy rain, or failure of infrastructure such as sewers and storm drains.

The information indicates the flood risk to areas of land and is not sufficiently detailed to show whether an individual property is at risk of flooding, therefore properties may not always face the same chance of flooding as the areas that surround them. This is because we do not hold details about properties and their floor levels.

Information on flood depth, speed or volume of flow is not included.

This dataset consists of an interactive map (and supporting guidance) containing background information that informs how we understand flood risk across the Thames River Basin District. The map shows the River Basin District, component river basins and the coastline together with layers showing land use and topography.

This dataset together with equivalent datasets for each River Basin District, supports the Preliminary Flood Risk Assessment for England report which has been written to meet the requirements of the Flood Risk Regulations (2009) - to complete an assessment of flood risk and produce supporting maps of river catchments. Attribution statement: Open Government Licence

© Environment Agency copyright and/or database right 2018. All rights reserved. © Crown copyright and database rights 2018 Ordnance Survey 100024198 © Bluesky International Ltd/Getmapping PLC. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, British Antarctic Survey and British Geological Survey. © NERC (Centre for Ecology & Hydrology; British Antarctic Survey; British Geological Survey).
Contains public sector information licensed under the Open Government Licence v3.0.

Public Rights of Way - collated 2020 - Additional authorities 2022 Available via individual Local Authority websites – there is a collation of links on rowmaps: Maps, KML and GPX showing rights of way: www.rowmaps.com/ Open Government Licence (nationalarchives.gov.uk)