I think that should be basin=detention or perhaps basin=infiltration? A retention basin is filled with water most of the time.
basin=infiltration — An infiltration basin catches storm water and allows it to seep into an aquifer. basin=detention — A detention basin catches storm water and allows it to drain slowly into natural waterways. basin=retention — A retention basin catches storm water and retains it, forming an artificial pond. https://wiki.openstreetmap.org/wiki/Tag:landuse=basin - Joseph On 10/25/19, Graeme Fitzpatrick <graemefi...@gmail.com> wrote: > In a *much* smaller way, we've got a similar area just near us, where an > area has been built to be filled with flood water after very heavy rain. I > think it's probably only filled 3-4 times in ~15 years since it was put in. > > Some photo's, wet & dry! > > https://ibb.co/SdVF7kt > https://ibb.co/4N3mWzQ > > https://ibb.co/S0Rzqtr > https://ibb.co/bF4Pf2g > > There is actually a 1m flood depth sign that should be visible in the > middle of that last shot, so it's about 1.2 - 1.5m deep out there. > > It's here: > https://www.openstreetmap.org/way/538666044#map=18/-28.07363/153.42448 > > I mapped it as: > > natural=water > water=basin > basin=retention > intermittent=yes > description=After heavy rain only > > which seems to cover it all nicely? > > Thanks > > Graeme > _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
