[Tagging] Drain vs ditch

[Markus]

On Fri, 1 Feb 2019 at 02:51, Warin <61sundowner at gmail.com> wrote:
>
> It appears in the descriptions that a 'ditch' can be used as a 'drain'. So why have a tag 'drain'?

I wouldn't oppose.

> The only differences I have between canal and the other things is large verse small and usefull quantity.
> Rather subjective, not a objective measurement. If the differences as so arbitrary why distinguish between them at all?

It's not just size, it's also conveyance vs direct distribution or
collection, similar to power=line vs power=minor_line.

Regards

Markus