[Tagging] Drain vs ditch

[ael]

On Fri, Jan 11, 2019 at 10:20:49PM +0100, François Lacombe wrote:
> I doubt a lot about mandatory navigability of canals.
> What about waterways intended to feed mills or fountains ?

As other have implied, these are not called canals in UK English: but
maybe there are exceptions. Mill streams or Mill races are the usual
terms. I am not familiar with any special terms for fountains: I would
expect a phrase like "piped supply" in most (underground) cases.

ael