File:Underground Bradford-The Hidden Course Of The Bradford Beck - Geograph.org.uk - 1035568.jpg
Unusually for a major city, Bradford is not built on any substantial body of water. The ford from which it takes its name 'Broad-Ford' was a crossing of the stream called Bradford Beck. The beck rises in the Pennine hills to the west of the city, and is swelled by tributaries such as Horton Beck, Westbrook, Bowling Beck and Eastbrook. At the site of the original ford, just below the present Bradford Cathedral, it turns north, and flows more or less straight towards the River Aire at Shipley.
The beck's course through the city centre is entirely underground and was mostly so by the middle of the 19th century.
For more pictures see https://www.flickr.com/photos/phill_dvsn/sets/72157608568527268/detail/
(required by the license)