<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">When mapping stormwater reservoirs and basins here in Japan, they often have a mappable landuse around them - the land around the basin is controlled, often with an access road and and fence of some type. <div class=""><br class=""></div><div class="">Mapping the water feature is easy, but what is the landuse of the entire facility? it is 10% larger than the basin itself.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Here is a good example - the small amount of land around this basin “belongs” to the basin. the access road belongs to it. It is not a park nor are the access roads for private property. they are just there to access the basin in an emergency (a breach, cleaning etc). </div><div class=""><br class=""></div><div class=""><a href="https://www.openstreetmap.org/way/791956035" class="">https://www.openstreetmap.org/way/791956035</a> <-mapped landuse example</div><div class=""><br class=""></div><div class="">other examples that could be mapped in a similar fashion:</div><div class=""><a href="https://www.openstreetmap.org/#map=17/36.28832/139.42927" class="">https://www.openstreetmap.org/#map=17/36.28832/139.42927</a></div><div class=""><a href="https://www.openstreetmap.org/#map=18/36.27943/139.43071" class="">https://www.openstreetmap.org/#map=18/36.27943/139.43071</a></div><div class=""><a href="https://www.openstreetmap.org/#map=18/36.29622/139.39674" class="">https://www.openstreetmap.org/#map=18/36.29622/139.39674</a></div><div class=""><a href="https://www.openstreetmap.org/#map=18/36.34744/139.32669" class="">https://www.openstreetmap.org/#map=18/36.34744/139.32669</a></div><div class=""><a href="https://www.openstreetmap.org/#map=17/36.05560/139.60083" class="">https://www.openstreetmap.org/#map=17/36.05560/139.60083</a></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">In many instances, emergency stormwater basins are in parks or large factories - making them a feature of that larger landuse.</div><div class="">I'm not talking about these. </div><div class=""><br class=""></div><div class="">Examples of what I’m not talking about:</div><div class=""><a href="https://www.openstreetmap.org/#map=16/36.2707/139.4148" class="">https://www.openstreetmap.org/#map=16/36.2707/139.4148</a></div><div class=""><a href="https://www.openstreetmap.org/#map=17/36.22028/139.64998" class="">https://www.openstreetmap.org/#map=17/36.22028/139.64998</a></div><div class=""><a href="https://www.openstreetmap.org/#map=16/36.1037/139.6329" class="">https://www.openstreetmap.org/#map=16/36.1037/139.6329</a></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">I’m talking about the dedicated land only used for the man-made basins and no other usage, controlled via barriers, and mappable via imagery. </div><div class=""><br class=""></div><div class="">I suggest landuse=industrial + industrial=water or similar for all man-made water related features that isn’t a plant of some kind (ones dedicated to filtering, treating, or pumping the water). </div><div class=""><br class=""></div><div class="">similar to landuse=railway, there is more land dedicated to these features than just the mappable feature itself. </div><div class=""><br class=""></div><div class=""><a href="https://taginfo.openstreetmap.org/keys/?key=industrial#values" class="">https://taginfo.openstreetmap.org/keys/?key=industrial#values</a></div><div class=""><br class=""></div><div class="">taginfo says this combination currently has 60 uses (#2 for all “water” values), and “water_storage” has 1. </div><div class=""><br class=""></div><div class="">thoughts?</div><div class=""><br class=""></div><div class="">Javbw</div></body></html>