River Grades on UKRGB


NORTHEAST - North of the Trent drainage, flowing to the North Sea

NORTHWEST - North of the Severn drainage, flowing to the Irish Sea

MIDLANDS - From the Warwickshire Avon in the south, to the Trent in the north

SOUTHWEST - The Somerset Frome and Dorset Stour and westwards

SOUTHEAST - Hampshire Avon drainage and eastwards, with the Nene as the northern limit


NORTH - Severn and Rheidol catchment and northwards

SOUTH - South of the Severn and Rheidol catchment


FAR NORTH - Rivers 'near' Inverness

NORTHEAST - Rivers 'near' Aberdeen

WEST HIGHLANDS - Rivers 'near' Fort William

CENTRAL HIGHLANDS - Rivers 'near' Perth

SOUTHERN UPLANDS - Rivers south of Glasgow