Re: [Tagging] How to tag flood prone points and areas?

2 Sep 2019, 23:20 by graemefi...@gmail.com: > > > On Mon, 2 Sep 2019 at 16:38, Mateusz Konieczny <> matkoni...@tutanota.com > > > wrote: > >> This kind of data is not >> verifiable and not surveyable by an >> OSM mapper. >> > > The place I'm thinking of,

Re: [Tagging] How to tag flood prone points and areas?

On Mon, 2 Sep 2019 at 16:38, Mateusz Konieczny wrote: > This kind of data is not > verifiable and not surveyable by an > OSM mapper. > The place I'm thinking of, there's a yellow line painted on the wall of the car park, approximately 1.2m high, labelled "1 in 100 year flood level". To me,

Re: [Tagging] How to tag flood prone points and areas?

2 Sep 2019, 03:21 by graemefi...@gmail.com: > > > On Sun, 1 Sep 2019 at 21:57, Paul Allen <> pla16...@gmail.com > > > wrote: > >> >> I'm fairly happy with flood_probability.  There's something nagging at the >> back of my >> mind saying I ought to be unhappy with

Re: [Tagging] How to tag flood prone points and areas?

On Sun, 1 Sep 2019 at 21:57, Paul Allen wrote: > > I'm fairly happy with flood_probability. There's something nagging at the > back of my > mind saying I ought to be unhappy with flood_probability, but it's not > telling me why. > How about something like: flood_potential=100y / 1% + depth=1.2

Re: [Tagging] How to tag flood prone points and areas?

On 1/9/19 10:31 pm, François Lacombe wrote: Hi all, flood_prone=yes doesn't sound to be good semantics. Think those are the words used on signs, so for English areas they make sense.. Should we rewrite it as floodable=* with 3 or four big level of probability (or causes, or whatever)

Re: [Tagging] How to tag flood prone points and areas?

sent from a phone > On 1. Sep 2019, at 14:05, Joseph Eisenberg wrote: > > since they are based on > calculations of the floodplain geometry and historical observations of > floods over many decades indeed, and with a changing ecosystem (warming) statistical predictions will also be less

Re: [Tagging] How to tag flood prone points and areas?

Hi all, flood_prone=yes doesn't sound to be good semantics. Should we rewrite it as floodable=* with 3 or four big level of probability (or causes, or whatever) instead? Many people raised concerns about yes/no tags and the key name seem to contain two distinct information (floodable +

Re: [Tagging] How to tag flood prone points and areas?

For `flood_probability` to be useful and verifiable in some way, there should be a link to the source in the changeset, or perhaps also source: flood_probability= on the object. Such statistical features like "1% risk of flood per year" can't really be verified by individual mappers, since they

Re: [Tagging] How to tag flood prone points and areas?

On Sun, 1 Sep 2019 at 05:24, Warin <61sundow...@gmail.com> wrote: You could add flood_prone=yes to the car park tag but that will show the > whole car park as affected, whereas it's only the bit down this end that > has a problem. Would drawing a separate area & marking that as > flood_prone=yes

Re: [Tagging] How to tag flood prone points and areas?

On 1/9/19 10:30 am, Graeme Fitzpatrick wrote: On Sat, 31 Aug 2019 at 20:51, Paul Allen > wrote: Verifiability is a problem. Near here, there's one office building built lake-side, that has a car park as the ground level of the building. The car park has a

Re: [Tagging] How to tag flood prone points and areas?

On Sat, 31 Aug 2019 at 20:51, Paul Allen wrote: > Verifiability is a problem. > Near here, there's one office building built lake-side, that has a car park as the ground level of the building. The car park has a line painted round it, about half way up the wall (1.2 - 1.5 m's) labelled as the

Re: [Tagging] How to tag flood prone points and areas?

Dear Immaculata, if you want to describe "things" that are prone to floods, it seems to me that the tag /flood_prone=yes/ can be the right one. I have a few doubts on how this information has been collected: are there official maps with areas prone to flood and you have selected assets in

Re: [Tagging] How to tag flood prone points and areas?

On Sat, 31 Aug 2019 at 08:30, Joseph Eisenberg wrote: > > But it's also questionable if entering 10 year or 100 year flood zones > (places that statistically have a 10% or 1% chance of flooding during > a 12 month period) into OSM is a good idea. The OSM database is based > on individual

Re: [Tagging] How to tag flood prone points and areas?

It appears that most features with the tag "flood_prove=yes" are covered by water on a somewhat frequent basis, perhaps once every year or two, to once a month, or even more often during a rainy season. However, I believe most of these features are prone to "flash flooding", since they are often

Re: [Tagging] How to tag flood prone points and areas?

On Sat, 31 Aug 2019 at 13:23, Immaculate Mwanja < immaculate.mwa...@hotosm.org> wrote: > > After collecting all the information, we decided we should upload them in > OSM to be shared with the world since it was a successful project to some > extent. The challenge came when we could not upload

[Tagging] How to tag flood prone points and areas?

Hi there! In the summer of 2018, we conducted a project called Assets and Threats mapping under the Ramani Huria project in Dar es Salaam, Tanzania that aims to make Dar es Salaam a more