[Talk-GB] GB boundaries (was "Revert my changeset please")
SomeoneElse
lists at mail.atownsend.org.uk
Mon Dec 5 11:07:14 GMT 2011
Ed Loach wrote:
> I have seen ... boundaries which follow
> rivers merged with less accurate river ways rather than moving the
> river tags to the relevant section of the boundary way).
>
On that specific question, I've seen plenty of places where an imported
GB boundary nearly-but-not-quite matches a GPS-, Bing- or OSSV-derived
river. I'm guessing that the river's moved since boundary was drawn.
Are inland GB bundaries ever defined in terms of something else (e.g. a
river or stream) or once defined do they tend to stay where they are or
move slowly as the river changes course?
When adding streams where boundaries have already been imported I've
been reluctant to use the boundary way as the stream course because
there are often clear places where it's not correct. I wouldn't want to
alter the location of the boundary way of course, as the boundary itself
is usually not marked on the ground.
With bigger rivers it's different I guess - the Thames isn't going to be
allowed to cut through Canary Wharf and create an oxbow lake between
Greenwich and Millwall any time soon!
Cheers,
Andy
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