[Tagging] Landuse border alignment

["Petr Morávek [Xificurk]"]

Liz napsal(a):
> On Sat, 15 May 2010, Petr Morávek [Xificurk] wrote:
>>  and the last,
>> most puzzling is landuse=basin "An area of water that drains into a
>> river."...
>>
> wow, there are some pretty huge ones of those
> like the Amazon basin
> the Lake Eyre basin
> the Mississipi basin
> the fill_in_any_large_river basin
> so that would colour in most of the map really quickly if that was rendered

That's where I'm confused, because if I understand correctly in
hydrology it's an area from which the rain water drains into a river or
lake, in that case what is this doing in landuse? This should be imho
marked with boundary tag, furthermore mapnik renders this as a water
(blue areas). What the heck is this tag for? Do we need it?

And the rest of water tags is also in conflict with common sense, which
tells me that the natural=water should be for lakes and non man-made
ponds, the landuse=reservoir for all of the man-made bodies of water.
But the wiki page [1] says something different.

[1] http://wiki.openstreetmap.org/wiki/Tag:natural%3Dwater

Regards,
Petr Morávek

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