[Tagging] Irrigation: usage=irrigation vs irrigation=yes [Was Irrigation: ditches, canals and drains]

[Martin Koppenhoefer]

sent from a phone

> On 4. Jun 2019, at 17:09, Peter Elderson <pelderson at gmail.com> wrote:
> 
> There is no main usage, except keeping water levels in all parts of the polders within very narrow range



this seems to be a very distinct usage, albeit not only irrigation or drainage but both. Maybe usage=regulation or gauge_regulation? or usage=polder / polder_management? 

Cheers, Martin