waterway=ditch in a forest, colored over the forest

[AllroadsNL]

In a forest, when drawn in the ditches.
On level 13 you already see the ditches in the forest.
This give a blue look, not seeing the forest anymore.

Example:
Here is a mountain bike route, through several ditches.
The reason to draw in the ditches.

Ditches are 50 cm deep. 1- 1,30 wide, most of the time dry and flows in to the 70-100 deep ditch.

For me showing at level 17 would be fine.
Two plots where drawn in yet, but the whole forest have ditches.

https://www.openstreetmap.org/#map=13/52.6587/5.9629

level 13

level 14

level 15

level 16

level 17

[imagico]

So the issue is about waterway=ditch being rendered too early at z13 in your opinion?

This is more or less the same as #1101 suggests for waterway=drain. The minor waterways at the lowest zoom level (z13) could be slightly reduced in width and casing strength probably though they were increased in width for a reason (#967). Note we do not want to start ditches later than streams due to #2346.

If these are dry most of the time you should tag them intermittent=yes by the way - no matter if that looks good on the map or not at the moment.

[AllroadsNL]

Yes, rendered too earlier on z13.
I would say, z16 z17

Forget, to search for a earlier issue.!

Intermittent=yes, I know,
Now intermittent, the right side of the example, compare.

z13

z14

z15

z16

z17

[AllroadsNL]

Not the solution, I think.
right side.
intermittent=yes
waterway=ditch
Zoomlevel 15

Zoomlevel 17

[nebulon42]

Yes, this is a regression. See #2636.

[kocio-pl]

With merging #2654 (and resolving #1781 of course) this problem is now even more visible:

z13
Before (took from the original report)

After

[AllroadsNL]

In the right field of waterways, the lower 7 waterways are waterway=drain and intermittent=yes.

[wmyrda]

It is not that steams/ditches/drains are displayed to early. They simply have this unnecessary white outline around them which makes them appear twice as wide as they actually are which is especially visible in the forest http://www.openstreetmap.org/#map=14/50.1657/22.0304 Now that the water color have changed that white line surrounding them could be removed.

[kocio-pl]

I'm afraid this could lead to a problem like #2098.

[kocio-pl]

This case seems to be OK, with ditched from z14 and intermittent ditches from z15, effectively resolved by #3467, so I will close it now. If there will be some other cases which are still troublesome, we can reopen ticket and discuss it further.