While there has been talk of deprecating the tag Waterway=wadi I am against this. The word wadi is putting people off using this tag and maybe the wording should be changed to waterway=dry_river which would then be far more acceptable to more people. Intermittent is usually accepted as being a stream but can be dry during some parts of the year. A wadi is dry most of the time, even years before a sufficiently heavy downpour will turn it into a flowing waterway that will dry up again when the rains stop and is therefore more of a feature than a waterway. Which is what is described by @ponzu. I would still go with waterway=wadi which I would recommend being a pecked brown line rather than blue, but we are restricted to what is available at the present. If there is sufficient use of the tag waterway=wadi then there will be sufficient case for renaming and/or rendering it differently. The present opposition to the brown pecked line is the clash with highway=track. The discussion regarding rendering is here https://github.com/gravitystorm/openstreetmap-carto/issues/805 and https://github.com/gravitystorm/openstreetmap-carto/issues/1255#issuecomment-71403860

While there has been talk of deprecating the tag Waterway=wadi I am against this. The word wadi is putting people off using this tag and maybe the wording should be changed to waterway=dry_river which would then be far more acceptable to more people. Intermittent is usually accepted as being a stream but can be dry during some parts of the year. A wadi is dry most of the time, even years before a sufficiently heavy downpour will turn it into a flowing waterway that will dry up again when the rains stop and is therefore more of a feature than a waterway. Which is what is described by @ponzu. I would still go with waterway=wadi which I would recommend being a pecked brown line rather than blue, but we are restricted to what is available at the present. If there is sufficient use of the tag waterway=wadi then there will be sufficient case for renaming and/or rendering it differently. The present opposition to the brown pecked line is the clash with highway=track.highway=track. The discussion regarding rendering is here https://github.com/gravitystorm/openstreetmap-carto/issues/1255#issuecomment-71403860

While there has been talk of deprecating the tag Waterway=wadi I am against this. The word wadi is putting people off using this tag and maybe the wording should be changed to waterway=dry_river which would then be far more acceptable to more people. Intermittent is usually accepted as being a stream but can be dry during some parts of the year. A wadi is dry most of the time, even years before a sufficiently heavy downpour will turn it into a flowing waterway that will dry up again when the rains stop and is therefore more of a feature than a waterway. Which is what is described by @ponzu. I would still go with waterway=wadi which I would recommend being a pecked brown line rather than blue, but we are restricted to what is available at the present. If there is sufficient use of the tag waterway=wadi then there will be sufficient case for renaming and/or rendering it differently. The present opposition to the brown pecked line is the clash with highway=track.