Tags: Canal.
The Witham Navigable Drains are located in Lincolnshire England and are part of a much larger drainage system managed by the Witham Fourth District Internal Drainage Board. The Witham Fourth District comprises the East Fen and West Fen to the north of Boston which together cover an area of 97 square miles (250 km2). In total there are over 438 miles (705 km) of drainage ditches of which under 60 miles (97 km) are navigable.
