Afon Crai

The Afon Crai is a river in Powys, Wales rising in the Fforest Fawr section of the Brecon Beacons National Park and flowing north into the River Usk. The headwaters known as Blaen-crai flow north from Bwlch Bryn-rhudd, a col between the Crai valley and the upper Swansea Valley for 2 km into the Cray Reservoir. The river emerges from below the dam to flow a further 8 km through the dispersed settlement of Crai.[1]

Afon Crai from the Pont Felin-crai

In common with other tributaries of the River Usk and the Usk itself, the Afon Crai is designated as a special area of conservation for its three species of lamprey, twaite shad, European bullhead, Atlantic salmon and otter.[2]


  1. ^ Ordnance Survey Explorer map OL12 'Brecon Beacons National Park: western area'
  2. ^

Coordinates: 51°56′53″N 3°36′03″W / 51.94806°N 3.60083°W / 51.94806; -3.60083