Tag:waterway=riverbank
From OpenStreetMap
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 riverbankback to Key:waterway |
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| Description: For tagging wide rivers which need to be defined by an area rather than just shown as a linear way. |
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Contents |
Summary
This describes the tagging scheme for large rivers, or sections of a river which are wide enough to require mapping of distinct areas of water/river banks. Example: River Thames as it flows through Central London.
Narrower rivers should be drawn as a way and tagged as waterway=river.
How to Map
The area of the river should be marked by a closed area drawn along the riverbanks, and closed at each end. In practice, as wide rivers tend to be long, the river will be drawn as a series of adjacent closed areas (ways 1 & 3 in image below).
These areas should be tagged as waterway=riverbank.
In addition a way tagged as waterway=river (way 4 in image below), should be drawn in the direction of the river flow (i.e. from source to sea).
Islands
A multipolygon relation should be defined and the island and the main river bank included in the relation. The main riverbank way (way 1 in image below) will have the role 'outer' and the way for the island (way 2 in image below) will have the role 'inner'.
See also
- Tidal Rivers proposal/discussion
- Relations/Proposed/Rivers
