The Upper Calder Valley lies in West Yorkshire in northern England, and covers the towns of Todmorden, Hebden Bridge, Mytholmroyd, Luddendenfoot, and Sowerby Bridge, as well as a number of smaller settlements such as Portsmouth, Cornholme, Walsden and Eastwood. The valley is named after the River Calder, which runs through it. Major tributaries of the Upper Calder include the Walsden Water, which flows through the large village of Walsden to join the Calder at Todmorden; the Hebden Water, which flows through Hebden Dale to join the Calder at Hebden Bridge; and Cragg Brook, which flows through Cragg Vale to join the Calder at Mytholmroyd.
The Upper Calder Valley falls entirely within the much larger metropolitan district of Calderdale. The towns of the Upper Calder are situated linearly along the valley, which cuts through the eastern slopes of the Pennines from Portsmouth in the west to Sowerby Bridge, a market town on the outskirts of Halifax, in the east.
The rugged and steep-sided Upper Calder Valley inspired such literary artists as the poets, Ted Hughes (who was born in Mytholmroyd) and Sylvia Plath (who is buried in Heptonstall, near Hebden Bridge), and the writer, Emily Brontë. The valley has also been a popular setting for film and TV.
Jennings, B. Pennine Valley: History of Upper Calderdale Dalesman Publishing Co Ltd, 1992.