[Talk-us-massachusetts] Towns' borders along rivers

[Wayne Emerson, Jr.]

I try to make separate ways for the river & the admin boundary. People 
tend to move the rivers around and when a river is also an admin 
boundary there is no visual difference in iD. (I mentioned this (as 
Thorwynn) in an issue with iD (initially unrelated) but they ignored 
it.) https://github.com/openstreetmap/iD/issues/6162
(It turned into a long discussion about admin boundaries also being 
other things)

Someone in that thread quoted the wiki : "Avoid connecting boundaries to 
physical features like woods or rivers. Sooner or later these features 
change in reality and get updated in OSM – but usually the shape of the 
boundary remains. An exception is if the boundary is legally defined to 
be the physical feature."
It seemed most in the thread agreed with this. In my experience the 
official boundaries from MassGIS don't always align with the river 
center or thalweg, and especially in marshy river areas I have found 
that rivers-as-admin borders have been moved far from the official line.

I have always made sure the "boundary=administrative", "admin_level=X" 
were on the ways. (only a few were missing them) I know others think 
they are not needed, but the tags are already there and make it easy for 
a mapper to distinguish what type of boundary it is.

-Wayne

On 5/28/2020 5:24 PM, Yury Yatsynovich wrote:
> Hi!
> I was wondering if everybody is comfortable about aligning towns' 
> borders with the waterways (where the borders actually go along the 
> waterways) and removing the redundant ways with tags 
> "boundary=administrative", "admin_level=X" that currently serve as 
> segments of borders?
> For instance, I did it this way here:
> https://www.openstreetmap.org/way/809321106
>
> -- 
> Yury Yatsynovich
>
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