Hey, I saw this one in person. I love that you guys are adding them to OSM. Bravo!!

I forgot to mention that I put the Magnolia town boundary into a relation in this changeset

Hello! Welcome to the OSM project and thanks for this edit. When mapping paths, make sure to connect them to other features, that way computer routing systems can make the connections. If you have time, log back in and draw a connecting path from Central Park to the road.

Mostly out of curiosity, what data file are you using for the parks here?

nice work mapping parks around Maryland. I see you've been doing a lot of them.

What river misuse?

In your changeset comments, please add more information. Added "stuff" is not acceptable. osm.wiki/Good_changeset_comments for more

In your changeset comments, please add more information. Added "stuff" is not acceptable. osm.wiki/Good_changeset_comments for more

This changeset is flagged for mass deletion. Please explain the "incorrect data" here.
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Published using OSMCha: https://osmcha.mapbox.com/changesets/59885716

Hello there. What was incorrect about the data that you edited here? Please provide a longer changeset comment when you edit.

Thinking back on this, what do you think about having eruv=rope, eruv=wire, versus eruv=yes paired with eruv:type=rope or wire. Tags like barrier and highway have their 'type' as the tag name.

The revert failed to fix the natural=water tags.

The edges of a river should not be tagged as such if there is a relation for the river.

Hey there, thanks for doing some editing around Baltimore. I noticed you deleted one of our new protected cycletracks. I reverted this changeset because it used old Bing Imagery. If you're editing Maryland, use the "MD Latest 6 Inch Aerial Imagery" in iD. It is higher resolution, leaf-off imagery that is updated regularly. As for this changset, we have a number of new protected bike tracks that are separate from the sidewalk and the car lanes. Watch out for those. Thanks!

user_5359: the OP and I are colleagues and so I walked him through changing this to a more appropriate tag (leisure=common). Cheers!

Phil, I've been looking for a dataset for adding hydrology to OSM that is both high-resolution and accurate. This changeset matches those characteristics, but the NHD data (even NHDPlusv2) isn't very accurate in my experience. For instance, look at https://i.imgur.com/a4Z9hTw.png and see how off the NHD flowline is. Are you manually correcting each flowline with imagery, or is there some other NHD source that I am missing. Thanks!

changeset under discussion on OSM US Slack: https://osmus.slack.com/archives/C1YP8DZ0A/p1502233346926171

Hello there. The planned reservoir will not be an open reservoir as you mapped but rather three large tanks. Since the reservoir isn't constructed yet, and will not look like this, I went ahead and undid your change. Reverted in changeset/52212556

Jan: I'm glad that you found this and commented. I think your idea is superb. I was trying to decide if I should use an existing key like barrier but you make a good point that it could be interpreted by a routing engine as a generic barrier. Better to start something totally fresh.

What do you think about using a colon vs an underscore to separate subtypes? I like the way the colon looks. Is there any functional difference?

I cannot think of any other physical objects that manifest a symbolic border in a religious context. However, I think that a border fence has the same connotation for political divisions. The fence is observable so it gets the fence tag, whereas the boundary is typically set by relation. Once I find the entire length of this eruv (it has to be continuous so that should make it easier to follow), I'd add all the parts as eruv=* and then add some kind of relation. I've seen a few (1-4 on the planet) where people are using a boundary=religious for these. I think that such a boundary might be appropriate, though are usually used for papal states and such with a government. The eruv is somewhat less formal, though I suppose it does have a maintainer and legal backing, so religious boundary might be good for relation.

Jan,

Sure, an eruv is a physical object that serves as a symbolic boundary in the Jewish Orthodox faith. Read more:https://en.wikipedia.org/wiki/Eruv

There isn't a great tag for this yet on OSM, so I added this under the premise of the "Any tags you like" principle (osm.wiki/Any_tags_you_like) until I come up with a formal proposal. Do you have any ideas?

It is a physical thing, a rope or wire but it doesn't serve as a mobility barrier, it doesn't carry power or communication. This sets it apart from other OSM tags. Fellow OSM'er MDRoads and I have been discussing how best to map these. There are a few others on the map but people are taking the approach of using a boundary relation, which I think is OK but I'm more interested in mapping the physical thing that can be observed out in the world. Here are some photos of the Eruv in Baltimore. It is something you can see and touch, unlike most boundaries.

https://goo.gl/photos/9TgKDkDyjWvmTQGG7

Best,
Elliott