[Tagging] When was landuse=reservoir deprecated ?

[Greg Troxel]

fly <lowflight66 at googlemail.com> 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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