Key:content

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Public-images-osm logo.svg content
Water Storage Tank and Track Across Outer Marsh - geograph.org.uk - 806706.jpg
Description
To describe the contents of a feature used to store materials Edit or translate this description.
Group: Properties
Used on these elements
may be used on nodesshould not be used on waysmay be used on areasshould not be used on relations
Documented values: 2
Useful combination
See also
Status: de facto

The key content=* can be added to features used to store materials to declare the contents of the feature. It is commonly used with man_made=bunker_silo, man_made=silo and man_made=storage_tank.

Values

Tags Description Photo
content=water Water.
content=drinking_water Drinking water.
content=chemicals Chemicals.
content=oil Oil.
content=propane Propane.
content=oxygen Oxygen.
content=nitrogen Nitrogen.
content=liquid_nitrogen Liquid nitrogen.
content=hydrocarbons Hydrocarbons (generic tag).
content=gas Generic tag for any  gas.
content=natural_gas Natural gas (mostly methane).
content=biogas  biogas.
content=LNG  Liquefied natural gas is natural gas (predominantly  methane with some mixture of  ethane) that has been cooled down to liquid form.
content=LPG  Liquefied petroleum gas refered simply as  propane and  butane.
content=ngl Natural Gas Liquids ( condensate) like ethane, propane and butane.
content=fuel Fuel (generic tag).
content=silage Silage.
content=manure Manure.
content=wine Wine.
content=beer Beer.
content=sewage Sewage.
content=slurry Liquid manure/Slurry
content=wine Wine.
content=crop Crop. Also add crop=*
content=salt Salt.
content=hot_water Hot water.
content=wastewater  Wastewater . More general than sewage; e.g. includes industrial and agricultural waste.
More values can be found at taginfo

Avoid tagging something with content=unknown. It's better to wait until the actual content is surveyed.

See also

  • substance=* - similar key, used for pipelines and related facilities
  • inscription=* for textual content on signs
  • capacity=* for the size of a storage facility

Possible mistakes

Both contents=* and storage=* tags are in usage. As the semantic difference is insignificant, it is recommended to focus on content=* used by the majority of mappers.

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!
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!