See Also...International Specification for Orienteering Maps ISOM Index Symbols Index previous next
This group includes both open water and special types of vegetation caused by the presence of water (marsh).
The classification is important because it indicates the degree of hindrance to the runner and provide features for map reading and control points.
A black line round a water feature indicates that the feature cannot be crossed under normal weather conditions.
In dry areas the features listed in this section may only contain water in some seasons.
Crossable small watercourse
Minor water channel
Special water feature
Crossing point with a bridge
Crossing point without a bridge
Click to go to the top of this page