Key:flood_prone

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+/- flood_prone
Group

Properties

Used on these elements

use on nodes unspecified use on ways unspecified use on areas unspecified use on relations unspecified

Status

Undefined Status: Undefined


General Situation

A way or an area that is prone to flooding, this is mostly applicable to roads that go under water after heavy rains. Flooded roadways are often very dangerous to cross and many people die each year as a result.

Floodway1.jpg
Floodway2.jpg

Photos were taken south of Barellan, in the Mirrool Creek floodplain.

Floodway3.jpg
Floodway4.jpg

The above photos are of the Gwydir highway east of Moree

Usage

While it is preferable to tag the entire way that is likely to go under water, if this information isn't known you can tag a node as flood_prone=yes as this may help routing software to avoid potentially hazardous crossings if there has been heavy rain.

Rendering

Flood prone areas don't have water across them 99.9% of the time, so there isn't any perceived benefit in rendering these areas most of the time.

Emergency services may find it useful to have their own flood mapping that highlights these and similar tags, but this is a special use case.

Tagging

flood_prone=yes

Similar Tag Ideas

  • It might be useful to tag the markers that indicate depth of water when flooded, although similar markers can be found along river banks and tidal water areas
  • It might be useful to tag how often flooding gets or covers a certain area, eg once in 100 years.

See Also