See Also...International Specification for Orienteering Maps ISOM Index Symbols Index previous next
revision 01/00
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.
Lake
Pond
Waterhole
Uncrossable river
Crossable watercourse
Crossable small watercourse
Minor water channel
Narrow marsh
Uncrossable marsh
Marsh
Indistinct marsh
Well
Spring
Special water feature
Footbridge
Crossing point with a bridge
Crossing point without a bridge
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