The Nottingham Canal originally extended from a junction with the Cromford Canal just above its junction with the Erewash Canal at Langley Mill to the Trent at Nottingham – about 15 miles (24 km) and 18 locks, but most of it has been closed and filled. There now remains a 2½ mile (4 km) length through central Nottingham from Lenton Chain to the Trent, which is a bypass for a partially unnavigable stretch of the Trent.
The maximum boat size that can navigate the Nottingham Canal is
length: 79' 9" (24.3 metres) - Castle Lock
beam: 15' 2" (4.62 metres) - Castle Lock
height: 8' 0" (2.44 metres) - Chain Lane / London Road Bridge
draught: 4' 0" (1.22 metres) - cill of Castle Lock