Calder Flood Relief Channel at Thornhill
Introduction
The photograph on this page of Calder Flood Relief Channel at Thornhill by Stephen Craven as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Stephen Craven Taken: 24 Jul 2026
This was the Dewsbury Canal, providing a shortcut for river traffic bypassing a weir. I have not found a date for when it was converted to a flood channel. All the photos on Geograph so far show it empty, but other photos online do show it carrying a substantial flow of water.
