fly <[email protected]> writes: > When was landuse=reservoir [1] deprecated ? > > There was only little discussion on tagging@ about water=* [2][3]. Now > we have to different uses which do not fit together (eg, > water=lake;intermittent ?). > > Anyway landuse=reservoir was never deprecated and has 200000+ uses and > might not be exact equal to water=reservoir. There is no problem with > using both tags at the same time.
I'm not objecting to using both, but landuse=reservoir has a messy history in Massachusetts, and is inherently confusing. water=reservoir is pretty clearly appropriate for the area that is actually water (looks like a lake). The problem with landuse=reservoir is that often there is a situation where there is a parcel (legal unit of land under one ownership) that cotains some dry land, often wooded, and a reservoir (water). The purpose of the land is 1) to contain the reservoir and 2) to provide a buffer around it. Often it is signed "public water supply -- no trespassing". Originally, the MassGIS openspace import had these land parcels tagged as landuse=reservoir, which made them all blue. Then they got retagged, I think to landuse=reservoir_protection. So I have seen landuse=reservoir_protection, landuse=reservoir_watershed, and other things. Because of that, I think landuse=reservoir should be avoided, because it's likely to be misinterpreted. I don't like reservoir_watershed either, because properly that's not a landuse, but an area that happens to drain into a reservoir, and is something that doesn't seem to fit OSM. The pednant in me would want landuse=reservoir_protection for the land buffer around a reservoir, landuse=reservoir *and* water=reservoir for the water, and landuse=water_works for land used for equipment. But I think putting landuse=reservoir_protection around the whole parcel and water=reservoir on the water is necessary and sufficient. I'm not arguging for running a bot - just that with landuse=reservoir it is hard to be sure one understands what was meant.
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