The location of the deepest channel can change over time, as mudbanks or sandbanks shift position. This is why commercial vessels operating on rivers frequently rely upon a succession of pilots, each familiar with a particular portion of the river. Unless an OSM mapper has surveyed a portion of the river recently with a depth gauge, they would have to rely on possibly-out-of-date information from some other map.
On April 18, 2015 11:32:49 AM CDT, Tobias Knerr <o...@tobias-knerr.de> wrote: > On 13.04.2015 15:06, Torstein Ingebrigtsen Bø wrote: > > I'm currently importing topological data of Norway to OSM. From the > data > > set we have riverbanks; however, we do not have the deepest middle > way > > as required by the wiki [1]. > > As the deepest middle way is hard to identify for regular mappers, I > would be surprised if many people considered that a strict > prerequisite > for mapping rivers. So from my point of view, it would be acceptable > for > your import to automatically generate the way from the riverbank area > and upload both the way and area. This is assuming you know the flow > direction, which I do consider important. > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging -- John F. Eldredge -- j...@jfeldredge.com "Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only love can do that." -- Martin Luther King, Jr. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
