Hi, I'm no expert in the waterway arena, however I wanted to point out that there is currently a pretty in-depth discussion of waterway tagging (including some suggestions to discontinue using waterway=wadi) on the Tagging mailing list, you can find the thread archive here: https://lists.openstreetmap.org/pipermail/tagging/2015-January
Happy Mapping, =Russ On Wed, Jan 21, 2015 at 4:18 PM, john whelan <[email protected]> wrote: > I have difficulties with water I must confess. I'm mapping from a > satellite image taken an a particular day. All I see is water, not wadi > etc. If its a River I'm supposed to note which direction it flows. My > eyesight isn't that good. A wide river isn't a problem but when is a > Stream a River or the other way round, or sometimes I see a series of > elongated patches of water and I'm unclear what those are. > > Unfortunately I think we need people on the ground to better tag what we > are doing from the satellite image. > > Cheerio John > > On 21 January 2015 at 18:04, AYTOUN RALPH <[email protected]> > wrote: > >> I would like to raise the issue of tags for *waterway=river*, >> *waterway=stream* and* waterway=wadi.* >> The problem that exists with the existing tags is that there is no visual >> difference on the map for a stream (perennial) and a stream (intermittent) >> and the only other option is wadi which gives a blue pecked line. >> Accepted mapping standards for this would be to show:- >> all perennial rivers and streams as a continuous solid blue line >> (indicating that there is flowing water all year round) >> all non-perennial rivers and streams as a continuous blue pecked line >> (indicating that there is flowing water during the wet season but not the >> whole year). >> A wadi would be depicted with a continuous pecked brown line (indicating >> that it is dry watercourse and could be dry for years at a time...only >> flowing if there is a flash flood or unusually heavy rain). >> This would then convey the correct meanings with symbols on the map and >> make reading the map a lot easier. The categories would still be searchable >> and distinguish between the three categories of water flow. >> The proposed tags would then be >> *waterway=river* ...... *waterway= stream* ...... continuous solid blue >> line >> *waterway=river_intermittent ...... waterway=stream_intermittent ..... >> *continuous >> pecked blue line >> *waterway=wadi* ..... continuous pecked brown line (a wadi can be so >> wide that another tag would be needed similar to the tag for river banks) >> *waterway=wadi_bank* which would still be a brown pecked line. >> This would then ease the path for introducing the tags for perennial >> lakes with a solid blue outline and lighter blue fill, intermittent lakes >> with a blue pecked outline and a light blue fill and dry pans with a brown >> pecked outline with a brown stipple fill. >> I can figure out a single tag proposal on wiki but do not know how to do >> this more complex proposal as it entails changing all the tags at the same >> time along with their map symbols. >> If it is deemed appropriate is there someone who could do this? >> Reference...... >> http://pubs.usgs.gov/gip/TopographicMapSymbols/topomapsymbols.pdf >> >> _______________________________________________ >> HOT mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/hot >> >> > > _______________________________________________ > HOT mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/hot > >
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