Water and marsh

Besides navigation and positioning, this group is important to the competitor as it facilitates the interpretation of height in maps with complex contouring. In dry areas the features listed in this section may only contain water in some seasons.


301 Lake
Large areas of water are shown with dot screen. Small areas of water should be shown with full colour. A black bank line indicates that the feature cannot be crossed.
Colour: blue 50% (60 lines/cm), black.
See minor changes in August 2003
304 Uncrossable river
An uncrossable river or canal is drawn with black bank lines. The bank lines are broken at a ford.
Colour: blue 50% (60 lines/cm), black.
See minor changes in August 2003
305 Crossable watercourse
A crossable watercourse, minimum 2 m wide. The width of watercourses over 5 m wide should be shown to scale.
Colour: blue.
306 Crossable small watercourse
A crossable watercourse (including a major drainage ditch) less than 2 m wide. For better legibility a ditch in a marsh should be drawn as a crossable watercourse (305).
Colour: blue.
307 Minor water channel
A natural or man-made minor water channel which may contain water only intermittently.
Colour: blue.
309 Uncrossable marsh
A marsh which is uncrossable or dangerous for the competitor. A black line surrounds the symbol.
Colour: blue, black.
See minor changes in August 2003
310 Marsh
A crossable marsh, usually with a distinct edge. The symbol should be combined with vegetation symbols to show runnability and openness. Where a small marsh area should be combined with either 403/404 it is permitted to use 401/402 to improve legibility.
Colour: blue (with yellow/green).
314 Special water feature
A special small water feature. The definition of the symbol must always be given in the map legend.
Colour: blue.