The Erewash Canal runs from the River Trent and the Soar Navigation at Trent Lock to Langley Mill where it joins the now derelict Nottingham Canal and Cromford Canal (under restoration). The Erewash Canal is 11.5 miles (18.5 km) long and has 14 locks. The restored lock at Langley Mill, which allow entrance to Langley Mill Basin, is the first lock on the Cromford Canal.
The Derby Canal (under restoration) joined the Erewash Canal at Sandiacre Junction (just above Sandiacre Lock). The Nutbrook Canal (derelict and filled in) joined the Erewash Canal just below Hallam Fields Lock.
The maximum size of boat that can navigate the canal is
length: 80' 4" (24.5 metres) - Long Eaton Lock
beam: 13' 5" (14.1 metres) - Hallam Fields Bridge
headroom: 7' 4" (2.23 metres) - Hallam Field Bridge
draught: 4' 0" (1.22 metres) - cill of Sandiacre Lock
The locks between between Trent Lock and Langley Mill Bridge require Handcuff keys.