EA Hydrological Boundaries
Summary
The Hydrological Areas are a polygon dataset showing 139 hydrological units across England and parts of Wales, that have been defined by the Environment Agency. The units show areas that have broadly similar hydrological characteristics. Many of the hydrological areas are defined by surface water (river) catchments, which are areas of land from which all surface run-off flows through a series of streams, rivers and possibly lakes, to a particular point in the water course such as a river confluence. Other units are defined based on hydrogeological characteristics, where this is more appropriate, such as groundwater recharge areas.
Categories
Use limitation statement
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Licence
Open Government LicenceAttribution statement
© Environment Agency copyright and/or database right 2015. All rights reserved. © SEPA. Some features of this information are based on digital spatial data licensed from the Centre for Ecology and Hydrology © NERC (CEH). Contains OS data © Crown copyright [and database right]. Derived in part from 1:50,000 scale BGS Digital Data under Licence 2011/051/F. British Geological Survey © UKRI 2021
Technical information
- Update frequency
asNeeded
- Lineage
- The Hydrological Areas boundaries are based on the following datasets: WFD cycle 2 river catchments – Open Data spatial format available on data.gov.uk under OGL WFD cycle 2 transitional – Open Data spatial format available on data.gov.uk under OGL WFD cycle 2 management catchments – Open Data spatial format available on data.gov.uk under OGL WFD cycle 2 groundwater – Open Data spatial format available on data.gov.uk under OGL Statutory main rivers – Open Data spatial format available on data.gov.uk under OGL CAMS technical boundaries – Open Data spatial format available on data.gov.uk under OGL (https://data.gov.uk/dataset/5a10b765-7eeb-4bdc-a075-70849cb0cc5e/technical-assessment-boundaries-behind-the-abstraction-licensing-strategies-cycle-2) The SEPA boundary for the Scottish catchment, with approval from SEPA to use this dataset under OGL BGS 50k solid geology – with approval from British Geological Survey to use this dataset
Spatial information
Coordinate reference system
http://www.opengis.net/def/crs/EPSG/0/27700Geographic extent
- Latitude from: 49.828137 to 55.891398
- Longitude from: -6 to 2.100358
Metadata information
Language
English
Metadata identifier
6b54c58a-605e-406e-82c2-20dd78a08905
Data and Supporting Information
| Data services and download by area of interest | Link | Action |
|---|---|---|
| Download data by area of interest and format | N/A | Open link |
| EA Hydrological Boundaries WMS | Copy link | Preview |
| EA Hydrological Boundaries WFS | Copy link | N/A |
| OGC API - Features service | Copy link | Open link |
| Full downloads and supporting documentation | Format | Action |
|---|---|---|
| EA_Hydrological_Boundaries.gdb.zip | ZIP | Download |
| EA_Hydrological_Boundaries.geojson.zip | ZIP | Download |
| EA_Hydrological_Boundaries.gpkg.zip | ZIP | Download |
| EA_Hydrological_Boundaries.shp.zip | ZIP | Download |