Leominster Canal
Herefordshire, United Kingdom
The Leominster Canal was an English canal which ran for just over 18 miles from Mamble to Leominster through 16 locks and a number of tunnels, some of which suffered engineering problems even before the canal opened. Originally, the canal was part of a much more ambitious plan to run 46 miles from Stourport to Kington.
Canal data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).