(No7) is a lock
on the River Lee Navigation
Directly behind the lock is Carthagena Weir
part of a fishery which also includes two lakes and a section of the Old River Lea
To the east of the lock is the Nazeing Mead complex of lakes which incorporate part of the River Lee Flood Relief Channel.
Vehicular access via B194 Nazeing New Road
Pedestrian and cycle access via the towpath which forms part of the Lea Valley Walk