[Talk-GB] 'historic' county boundaries added to the database

Colin Smale colin.smale at xs4all.nl
Thu Sep 20 08:45:10 UTC 2018


On 2018-09-20 10:25, Martin Wynne wrote:

> But I can't verify that fact. Should I not map it at all? What is verifiable on the ground is the fact that the stream does not stop dead at one location and restart at another.

How can you verify it's the same stream? Taking your own flourescein or
a RFID-tagged carp on mapping expeditions? It may be highly likely that
it is the same stream, but that is not the same as being verifiable.
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