Withens Clough Reservoir, Withens Moor above Calderdale, West Yorkshire, UK
The Reservoir, at ~290 m asl, is the result of a 22m-tall dam having been built in 1894; I haven't been able to find reference to its capacity, but its only one of many reservoirs in this part of the Pennines, the heartland of the Industrial Revolution precisely because of these moors, a reliable source of water to drive mills in the narrow valleys.
The 37m-tall Stoodley Pike Monument, erected 1854-56 to replace one completed in 1815 but which collapsed in 1854 (i.e a Napoleonic War memorial replaced at the end of the Crimean War) overlooks Calderdale from ~400 m. The main valley looks rather rural from here, with only the small village of Mankinholes visible, but behind the dark cloud on the left is the substantial industrial town of Todmorden, and Hebden Bridge is just off the right of the image.
Unsurprisingly, the river draining from the moor via the reservoir is Withens Clough, which meets Turvin Clough at Cragg Vale (just off the lower right of the image) then contunues as Cragg Brook to Mytholmroyd, where it feeds the River Calder.
Gorple Lower Reservoir and, behind, Widdop Reservoir are just visible ~11 km away at the upper right corner of the image.
Withens Clough Reservoir, Withens Moor above Calderdale, West Yorkshire, UK
The Reservoir, at ~290 m asl, is the result of a 22m-tall dam having been built in 1894; I haven't been able to find reference to its capacity, but its only one of many reservoirs in this part of the Pennines, the heartland of the Industrial Revolution precisely because of these moors, a reliable source of water to drive mills in the narrow valleys.
The 37m-tall Stoodley Pike Monument, erected 1854-56 to replace one completed in 1815 but which collapsed in 1854 (i.e a Napoleonic War memorial replaced at the end of the Crimean War) overlooks Calderdale from ~400 m. The main valley looks rather rural from here, with only the small village of Mankinholes visible, but behind the dark cloud on the left is the substantial industrial town of Todmorden, and Hebden Bridge is just off the right of the image.
Unsurprisingly, the river draining from the moor via the reservoir is Withens Clough, which meets Turvin Clough at Cragg Vale (just off the lower right of the image) then contunues as Cragg Brook to Mytholmroyd, where it feeds the River Calder.
Gorple Lower Reservoir and, behind, Widdop Reservoir are just visible ~11 km away at the upper right corner of the image.