Hydrological sections for England, Scotland and Wales with associated river catchment 2023, Water Framework Directive (WFD) waterbody and regional information British National Grid (BNG).

This dataset consists of hydrologically defined sections (polygons) for the
whole of Great Britain including river channels and coastal areas up to the
mean high water line for England and Wales. Each section has the following
attributes:

• The devolved administration(s) the section is within
• The area of the section that is contained within the devolved
  administration(s)
• The regional administration (from the Ordnance Survey Boundary Line) that
  the majority of the section is within
• The river catchment that the section is within. These are the existing
  Fish Health Inspectorate (FHI) catchment boundaries, new England and Wales
  catchments to ensure complete coverage of England and Wales, and the
  Scottish Environmental Protection Agency (SEPA) catchments.
• The waterbody river basin district ID and waterbody ID for England and
  Wales from the Water Framework Directive.

There are 2 versions of this dataset in a geographical coordinate reference
system (CRS) (EPSG 4236 - WGS84) see Hydrological sections for England, Scotland and Wales with associated river catchment 2023, Water Framework Directive (WFD) waterbody and regional information (WGS84)_ and this
dataset in a projected CRS BNG (EPSG 27700).

.. _hydrological sections for england, scotland and wales with associated river catchment 2023, water framework directive (wfd) waterbody and regional information (wgs84):
https://data.cefas.co.uk/view/21968