The River Irk travels under Middleton town centre for around 500m in a couple of parallel concrete box culverts.
The River Calder flows through Cornholme in a few stone culverts, we had a look at the first one which was around 650m in length.
The Limey Water runs through Rossendale in a series of stone and concrete culverts.
Built sometime in the 1980s Bunker is a long concrete storm relief the outfalls to the Manchester Ship Canal
A new storm relief complex in Trafford Park, 3 detention tanks and 700m of sewer were built to stop frequent spills to the Ship Canal.
The Beck Valley culvert flows east of Nottingham city center down into the River trent.