Key to symbols
Colour scheme
Watered
Navigable Non-
navigable
Tunnel Planned
or under
construction
       
Watercourse Unwatered
Non-
navigable
Non-
navigable
Tunnel Planned
or under
construction
       
Major source
Flash or large lake
Lake or reservoir
Canal basin
Branch
Junction with a non-navigable branch
Junction with a former branch
Natural watercourse tributary
Flat crossing
Triangular junction
Canal continuing off map
One-way route
in specified direction
Bridge
… lift
… swing
… over another canal
… over water
… over highway
international
… over motorway
British/Irish
… under railway
Underpass
Tunnel
Cutting
Embankment
Aqueduct
Marker, midpoint or milepost
Summit
Border or divide
Loop
Passing loop
Island
Toll island or gauging station
Ford
Vertical sluice gate
Bidirectional stop-lock
Flood gate or single gate
Lock
Lock staircase
Lock series
Inclined plane or boat lift
Abrupt end
Off-line marina
Marina or side wharf
Wharf or mooring
Dry dock
Pumping station or building
Water mill
Sluice with pumping station
Windmill
Miscellaneous structure or feature
Estuary
Ocean
or sea
Feeder reservoir
Start/end of navigable section
Weir
White water pool
Reservoir
Large reservoir