The rivers Aire, Calder and Colne drain the area to the east and the Roch and Irwell to the west. The Calder Valley provides a low-level route for road, railway and the Rochdale Canal between Greater Manchester and Lancashire in the west and West Yorkshire to the east. The Huddersfield Narrow Canal and the Manchester to Huddersfield railway pass through the Standedge Tunnels and the A62 road crosses the moorland at Standedge. The Leeds and Liverpool Canal passes through Bingley and Keighley en route to Skipton.