From OpenStreetMap Wiki
Jump to: navigation, search

ditch vs. drain

How do I decide between the two? The picture and descriptions look very similar


As I see this page included in Category:Way Direction Dependent category, should I assume that the way must be draw so that the direction of the way is downstream?. If so is it better to add, as in page Tag:waterway=stream, the following sentence?

Direction of the way should be downstream.

AnyFile (talk) 15:14, 11 March 2013 (UTC)


I disagree with the fact that every waterway=ditch implies barrier=ditch, however the reverse is true (a ditch barrier implies a ditch). Can we change it? Teuxe (talk) 17:16, 17 December 2014 (UTC)

  • In my opinion neither implies the other one (there may be small ditch that is not a barrier, there may be a dry ditch that is a barrier but not a waterway) Mateusz Konieczny (talk) 08:31, 18 December 2014 (UTC)
  • Both are distinctive. A waterway=ditch is for draining, a barrier=ditch for denying access. Neither implies the other. Perhaps barrier=ditch should be man_made=ditch/trench? --Jojo4u (talk) 20:40, 25 March 2015 (UTC)
  • Me too. Obviously it's a mistake. It should be removed the word "Implies barrier=ditch". Sergio (talk) 23:05, 8 September 2017 (UTC)

For drainage and irrigation

In Asian countries, ditches are commonly used as minor irrigation channels from a larger canal or pond. How do we differentiate a ditch used for drainage from that used for irrigation? --Planemad/Talk 07:15, 13 April 2016 (UTC)

I could find some uses ([1]) and discussions ([2] [3] [4]) on irrigation=yes, so I'd recommend this.--Jojo4u (talk) 22:09, 17 April 2016 (UTC)