Key:tidal
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 tidal
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| Description |
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An area in the tidal range. 
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| Group: Marine |
| Used on these elements |
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| Useful combination |
| Status: in use |
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| Tools for this tag |
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| Wikidata |
| Q1398201 |
The tag tidal=yes indicates that an element is in the tidal range. It could be a river, shore, part of the harbour or water area.
When the part of the harbour has a gate which does not let the tide in you can tag it with tidal=no. But normally this is default value which is not used.
How to map?
River
River flow
waterway=river + name=* + tidal=yes
River's water body
natural=water + water=river + tidal=yes
Tidal area at sea
Areas in the tidal range between 
mean high water springs (natural=coastline) and mean low water springs can be tagged with tidal=yes to explicitly indicate this. Some tags commonly used for these areas like natural=wetland + wetland=tidalflat already imply the area being in the tidal range.
Values
| Value | Description |
|---|---|
| yes | Indicates that an area is in the tidal range. The top of the tidal range is generally taken to be at natural=coastline; i.e., mean high-water springs (MHWS). |
| no | Default. Disambiguates whether item is not in the tidal range, or has not been considered for tagging. Not explicitly required. |
You can also add the type of this area:
Similar objects with deprecated values
If you know places with this tag, verify if it could be tagged with another tag.
Automated edits are strongly discouraged unless you really know what you are doing!
Automated edits are strongly discouraged unless you really know what you are doing!