Hydrometric Areas dataset for the UK

The Hydrometric Areas dataset for the UK is now available via the EIDC Hub. The Hydrometric Areas for Great Britain and Northern Ireland are administrative groupings of river catchments at a sub-national level used in the organisation of UK river flow measurement and hydrometric data management. The boundaries between hydrometric areas correspond to catchment boundaries as digitally-derived from CEH Integrated Hydrological Terrain Model (IHDTM) using a catchment definition programme. The datasets can be accessed here.Hydrometric Areas