The White Ash brook is a small watercourse in Accrington, it flows through around 420m of culverts before joining with the Hydnburn brook.
The Third Man is a famous sewer overflow found in Vienna that outfalls to the River Wien.
The River Wien flows through Vienna in a cutting which for around 2km becomes a large arched culvert
Bower's brook flows in a southernly direction through Widnes and eventually joins the Mersey. It's mostly culverted although it's path can be traced above ground by large wooden hatches.
The River Hyndburn drops into a culvert that takes it around 300m under a field
This culvert takes the Woodnook Water under Accrington town centre where it meets with the Warmden Brook.
