Mapping Catalogue

The table below provides a summary of the map layers which are available on the system. See here for attribution statements.

Attribution text is shown for the purposes of including these layers within the GDMS website for online viewing only. For use of map extracts (e.g. screenshots), refer to the terms and conditions of the website.

Dataset Name Source of Dataset   Dataset last updated     Date of upload to the system Version Type Zoom level visibility Licence type Attribution Comments
NH reference datasets                          
Areas Derived from HAPMS road sections   09/04/2019     28/04/2021     Static -      
Counties Ordnance Survey         05/05/2021     Static -   Ordnance Survey  
DBFOs National Highways   05/01/2019     28/04/2021     Static -      
Highway Boundary (Red Line Boundary) National Highways   09/08/2021     17/11/2021     Static 11 Open Government Licence Environment Agency Avaliable at: https://data.gov.uk/dataset/d92af767-a3d8-4860-b7da-d5edf596f90e
Marker Posts National Highways         16/07/2025     Static 16     Based on the Marker Post datasets held on HAGDMS/HADDMS
Regions Derived from amalgamation of NH Areas   09/04/2019     28/04/2021     Static -      
Roundabouts Ordnance Survey         06/05/2021     Static 14   Ordnance Survey  
Structures (IAM-IS) IAM-IS   25/04/2025     16/07/2025     Static 14      
Approved diversion routes National Highways   23/08/2021     17/11/2021     Static 11 Open Government    Avaliable at: https://data.gov.uk/dataset/01e2a489-6901-4cbc-84f3-09df7653464c
IAM-IS (Maintenance sections) IAM-IS         17/11/2021     Dynamic 8      
Local Authority Boundary           05/05/2021     Static - Open Government License    
Historical Mapping                          
Pre 1900 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1910 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1920 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1930 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1940 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1950 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1960 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1970 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1980 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 1990 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Pre 2000 Landmark Information Group Limited         23/04/2021     WMS - Bespoke Landmark Licence Landmark Information Group Limited  
Geotechnics (GAD)                          
OS Slope Areas Ordnance Survey         05/05/2021     Static 14   Ordnance Survey  
OS Slope Lines Ordnance Survey         05/05/2021     Static 14   Ordnance Survey  
Rock Slope Hazard Index National Highways         29/04/2021     Static 14      
Shrink Swell Potential - Cutting/ At Grade National Highways         06/05/2021     Static 14      
Shrink Swell Potential - Embankment/ Bunds National Highways         06/05/2021     Static 14      
Strategic Earthwork Rating (2020) National Highways         05/05/2021     Static 14      
Canal and River Trust                          
Canal Centreline Canal & River Trust   01/04/2012     30/04/2021     Static 14   Canal & River Trust  
Outfall/Discharge Point Canal & River Trust   01/05/2015     30/04/2021     Static 14   Canal & River Trust  
Environment Agency                          
Aquifer Designation Map (Bedrock Geology) British Geological Survey   24/05/2016     22/04/2021     Static 12   British Geological Survey  
Aquifer Designation Map (Superficial Deposits) British Geological Survey   24/05/2016     22/04/2021     Static 12   British Geological Survey  
Authorised landfill site boundaries Environment Agency   13/11/2020     22/04/2021     Static 12 Environment Agency Conditional Licence Environment Agency  
Inventory of Closed mining waste facilities Environment Agency   07/09/2020     28/04/2021     Static 13 Open Government Licence Environment Agency  
Flood Alert Areas Environment Agency   25/02/2021     22/04/2021     Static 12 Open Government Licence Environment Agency  
Flood Warning Areas Environment Agency   25/02/2021     22/04/2021     Static 12 Open Government Licence Environment Agency  
Groundwater Source Protection Zones Environment Agency   23/12/2020     28/04/2021     Static 13 Open Government Licence Environment Agency  
Groundwater vulnerability British Geological Survey   19/03/2020     22/04/2021     Static 12   British Geological Survey  
Groundwater vulnerability - drift deposits Environment Agency   19/03/2020     22/04/2021     Static 12   Environment Agency  
Historic landfill sites Environment Agency  

13/11/2020

    22/04/2021     Static 11 Environment Agency Conditional Licence Environment Agency  
Recorded flood outlines Environment Agency   12/02/2021     28/04/2021     Static 12 Open Government Licence Environment Agency  
Areas benefiting from defences Environment Agency - Flood Map for Planning   12/02/2021     22/04/2021     Static 11 Open Government Licence Environment Agency  
Flood storage areas Environment Agency - Flood Map for Planning   12/02/2021     22/04/2021     Static 12 Open Government Licence Environment Agency  
Flood zone 2 Environment Agency - Flood Map for Planning   12/02/2021     22/04/2021     Static 12 Open Government Licence Environment Agency  
Flood zone 3 Environment Agency - Flood Map for Planning   12/02/2021     22/04/2021     Static 12 Open Government Licence Environment Agency  
Spatial flood defences Environment Agency - Flood Map for Planning   12/02/2021     29/04/2021     Static 12 Open Government Licence Environment Agency  
Artificial Water Management Catchments Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Artificial Water Operational Catchments Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Groundwater Bodies Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Groundwater Management Catchments Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Groundwater Operational Catchments Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Lake Waterbodies Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static 11 Open Government Licence Environment Agency  
River Basin Districts Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
River Water Body Catchments Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Surface Water Management Catchments Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Surface Water Operational Catchments Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Transitional and Coastal Waterbodies Environment Agency - Water Framework Directive Cycle 2   29/09/2020     05/05/2021     Static - Open Government Licence Environment Agency  
Detailed River Network Environment Agency   01/06/2013     17/01/2025     Static 14 Environment Agency Conditional Licence  Environment Agency Includes two layers for river type and node type. 
Geology (BGS)                          
1:50k British Geological Survey         27/04/2021     WMS 13   British Geological Survey  
1:625k - Bedrock British Geological Survey   21/04/2021     27/04/2021     Static 8   British Geological Survey  
1:625k - Superficial British Geological Survey         05/05/2021     Static 8   British Geological Survey  
BGS boreholes British Geological Survey         27/04/2021     WMS 12   British Geological Survey  
Collapsible deposits Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Compressible ground Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Landslides Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Running sand Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Shrink-swell Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Soluble rocks Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Groundwater flooding susceptibility  Landmark Information Group Limited         27/04/2021     WMS 12 Bespoke Landmark Licence BGS (Landmark)  
Non-coal mining areas Landmark Information Group Limited         27/04/2021     WMS 12 Bespoke Landmark Licence BGS (Landmark)  
Recorded mineral sites Landmark Information Group Limited         27/04/2021     WMS 12 Bespoke Landmark Licence BGS (Landmark)  
Ferrous Corrosivity Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Fill Type Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Sulfate/Sulfide Potential Landmark Information Group Limited         23/04/2021     WMS 11 Bespoke Landmark Licence BGS (Landmark)  
Natural England                          
Ancient Woodlands Natural England   01/02/2021     27/04/2021     Static 12 Open Government Licence Natural England  
Areas of Outstanding Natural Beauty Natural England   01/09/2020     28/04/2021     Static 11 Open Government Licence Natural England  
Local Authority Boundary Natural England         05/05/2021     Static - Open Government Licence Natural England  
Local Nature Reserves Natural England   01/12/2021     30/04/2021     Static 12 Open Government Licence Natural England  
National Nature Reserves Natural England   01/04/2021     30/04/2021     Static 12 Open Government Licence Natural England  
National Parks Natural England   01/09/2020     05/05/2021     Static 12 Open Government Licence Natural England  
Nitrate Sensitive Areas Natural England   04/03/2019     05/05/2021     Static 12 Open Government Licence  Natural England  
Ramsar Sites Natural England   22/10/2020     30/04/2021     Static 12 Open Government Licence Natural England  
Sites of Special Scientific Interest Natural England   01/04/2021     05/05/2021     Static 12 Open Government Licence Natural England  
Special Areas of Conservation Natural England   23/11/2020     05/05/2021     Static 12 Open Government Licence Natural England  
Special Protection Areas Natural England   01/02/2021     05/05/2021     Static 12 Open Government Licence Natural England  
Ordnance Survey                          
OS Premium Rasters Basemap ESRI Premium Service WMS         10/05/2021     WMS -   Ordnance Survey  
OS VML and MasterMap Basemap ESRI Premium Service WMS         10/05/2021     WMS  -   Ordnance Survey  
OS MasterMap Highways Network - Roads Airbus - Geostore         29/04/2021     WMS 14   Ordnance Survey  
OS Open Rivers Ordnance Survey         18/11/2024     Static 15   Ordnance Survey  
Remote Sensing                          
1m Contours National Highways         17/11/2021     Static 16      
The Coal Authority (TCA)                          
Coal mining reporting areas The Coal Authority   06/05/2015     27/04/2021     WMS 14   The Coal Authority  
Coal outcrops The Coal Authority         27/04/2021     WMS 14   The Coal Authority  
Fissures and breaklines The Coal Authority         27/04/2021     WMS 14   The Coal Authority  
Mine entries The Coal Authority         27/04/2021     WMS 14   The Coal Authority  
Mine entry potential zone of influence The Coal Authority         27/04/2021     WMS 14   The Coal Authority  
Past shallow coal mine workings The Coal Authority         27/04/2021     WMS 14   The Coal Authority  
Probably shallow coal mine workings The Coal Authority         27/04/2021     WMS 14   The Coal Authority  
Surface mining (past and current) The Coal Authority         27/04/2021     WMS 14   The Coal Authority  
Brine Features        
Brine compensation areas Landmark Information Group Limited         23/04/2021     WMS 12 Bespoke Landmark Licence Cheshire Brine Subsidence Compensation Board  
Brine pumping related features Landmark Information Group Limited         23/04/2021     WMS 12 Bespoke Landmark Licence Wardell Armstrong LLP  
Brine subsidence solution areas Landmark Information Group Limited         23/04/2021     WMS 12 Bespoke Landmark Licence Johnson, Poole and Bloomer  
Mining and cavities                          
Mining instability Landmark Information Group Limited         26/04/2021     WMS 12 Bespoke Landmark Licence Ove Arup & Partners  
Man made mining cavities Landmark Information Group Limited         27/04/2021     WMS 12 Bespoke Landmark Licence Peter Brett Associates  
Potential mining areas Landmark Information Group Limited         26/04/2021     WMS 12 Bespoke Landmark Licence Wardell Armstrong LLP  
Natural cavities Landmark Information Group Limited         26/04/2021     WMS 12 Bespoke Landmark Licence Peter Brett Associates  
Subterranean features                          
Subterranean features: Line Landmark Information Group Limited         27/04/2021     WMS 12 Bespoke Landmark Licence  Landmark Information Group Limited  
Subterranean features: Point Landmark Information Group Limited         27/04/2021     WMS 12 Bespoke Landmark Licence  Landmark Information Group Limited  
Subterranean features: Polygon Landmark Information Group Limited         27/04/2021     WMS 12 Bespoke Landmark Licence  Landmark Information Group Limited  
Geohazard rating maps                          
Brine Extraction Hazard Rating National Highways         29/04/2021     Static 11      
Compressible/Collapsible Ground Hazard Rating National Highways         29/04/2021     Static 11      
Landfill Sites Hazard Rating National Highways         29/04/2021     Static 14      
Minor Asset Type National Highways         23/04/2021     Static 14      
Natural Landslides Hazard Rating National Highways         29/04/2021     Static 14      
Non-Coal Mining Hazard Rating National Highways         29/04/2021     Static 14      
Presence of PQ Concrete National Highways         29/04/2021     Static 12      
Dissolution Features Hazard Rating National Highways         06/05/2021     Static 14      
Shrink/Swell Hazard Rating National Highways         06/05/2021     Static 14      
Geotechnical Assets                          
Access constraint by approval status System produced         30/04/2021     Dynamic 14      
Access constraint by type System produced         30/04/2021     Dynamic 14      
Condition item by approval status System produced         30/04/2021     Dynamic 14      
Condition item by condition item type System produced         30/04/2021     Dynamic 14      
Condition Sets: by approval status System produced         30/04/2021     Dynamic 14      
Condition Sets: by CS641 feature grade System produced         30/04/2021     Dynamic 14      
Condition Sets: by initial classification System produced         30/04/2021     Dynamic 14      
Condition Sets: by subsequent classification System produced         30/04/2021     Dynamic 14      
Drainage by approval status System produced         30/04/2021     Dynamic 14      
Geotechnical asset by approval status System produced         30/04/2021     Dynamic 14      
Geotechnical asset by asset type System produced         29/04/2021     Dynamic 14      
Geotechnical asset by inspection status System produced         29/04/2021     Dynamic 14      
Geotechnical asset by network status System produced         29/04/2021     Dynamic 14      
Geotechnical asset by principal inspection return period System produced         17/11/2021     Dynamic 14      
SGM by approval status System produced         30/04/2021     Dynamic 14      
SGM by non-routine maintenance requirements System produced         30/04/2021     Dynamic 14      
Slope geometry by approval status System produced         05/05/2021     Dynamic 14      
Slope geometry by height/angle System produced         05/05/2021     Dynamic 14      
Vegetation by approval status System produced         30/04/2021     Dynamic 14      
Exploratory Locations                          
Exploratory locations System produced         11/05/2021     Static 14      
Events                          
Event status System produced         27/10/2021     Static 6      
Projects        
Project extents System produced         18/10/2024     Dynamic 6      
Drawings        
Drawing sets System produced         18/10/2024     Dynamic 12      
Located files System produced         18/10/2024     Dynamic 12      
Georeferenced drawings System produced         18/10/2024     Dynamic 19      
Catchments        
Sub-catchment System produced         18/10/2024     Dynamic 12      
Catchment System produced         18/10/2024     Dynamic 12      
Drainage assets        
Point System produced         18/10/2024     Dynamic 16      
Flow Direction System produced         18/10/2024     Dynamic 16      
Continuous System produced         18/10/2024     Dynamic 16      
Region System produced         18/10/2024     Dynamic 16      
Asset sets System produced         18/10/2024     Dynamic 16      
Component System produced         18/10/2024     Dynamic 16      
Point owner System produced         05/11/2025     Dynamic 16      
Continuous owner System produced         05/11/2025     Dynamic 16      
Region owner System produced         05/11/2025     Dynamic 16      
Point service grade System produced         18/10/2024     Dynamic 16      
Point structural grade System produced         18/10/2024     Dynamic 16      
Continuous service grade System produced         18/10/2024     Dynamic 16      
Continuous structural grade System produced         18/10/2024     Dynamic 16      
Region service grade System produced         18/10/2024     Dynamic 16      
Region structural grade  System produced         18/10/2024     Dynamic 16      
Point observation - service System produced         18/10/2024     Dynamic 16      
Point observation - structural System produced         18/10/2024     Dynamic 16      
Continuous observation - service  System produced         18/10/2024     Dynamic 16      
Continuous observation - structural System produced         18/10/2024     Dynamic 16      
Component max service score System produced         18/10/2024     Dynamic 16      
Component max structural score  System produced         18/10/2024     Dynamic 16      
Priority Assets                          
Culvert risk by status System produced         18/10/2024     Dynamic 12      
Outfall risk by status System produced         18/10/2024     Dynamic 12      
Soakaway risk by status System produced         18/10/2024     Dynamic 12      
Culvert by current workflow status System produced         18/10/2024     Dynamic 12      
Outfall by current workflow status System produced         18/10/2024     Dynamic 12      
Soakaway by current workflow status System produced         18/10/2024     Dynamic 12      
Flooding                          
Floods by severity System produced         18/10/2024     Dynamic 10      
Floods by status System produced         18/10/2024     Dynamic 10      
Floods by exceeded flag System produced         05/11/2025     Dynamic 10      
Flood Risk                          
Flood risk by status System produced         18/10/2024     Dynamic 12      
Flood risk by current workflow System produced         18/10/2024     Dynamic 12      
Spills                          
Spills by severity System produced         18/10/2024     Dynamic 10      
Spills by status System produced         18/10/2024     Dynamic 10      

Attribution Statement

Attribution

Attribution Statement

Ordnance Survey

Contains Ordnance Survey data © Crown copyright and database rights

Environment Agency

© Environment Agency copyright and/or database right All rights reserved

Landmark Information Group Limited

© Landmark Information Group and/or its Data Suppliers 2021

Canal & River Trust

© The Canal & River Trust copyright and database rights reserved 2014

British Geological Survey

Contains British Geological Survey materials © UKRI 2021

BGS (Landmark)

Based upon data provided by British Geological Survey © NERC. All rights reserved

Natural England

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2021

Getmapping Plc and Bluesky International Limited

© Getmapping Plc and Bluesky International Limited

The Coal Authority

© The Coal Authority. All rights Reserved

Cheshire Brine Subsidence Compensation Board

© Landmark Information Group and/or its Data Suppliers 2021

Wardell Armstrong LLP

© Landmark Information Group and/or its Data Suppliers 2021

Johnson, Poole and Bloomer

© Landmark Information Group and/or its Data Suppliers 2021

Ove Arup & Partners

© Landmark Information Group and/or its Data Suppliers 2021

Peter Brett Associates

© Peter Brett Associates LLP 2014