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How to map underwater roads in the sea or through lakes?

4

A ford is used for underwater river crossings - it usually has a some sort of compacted surface too. What about longer shallow water roads through the sea or lakes? Is ford=yes ok or do we have something better?

The specific track segment currently in question: https://www.openstreetmap.org/way/426743989

asked 23 Jun '16, 09:44

swaan's gravatar image

swaan
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accept rate: 0%

2

That looks exactly like a ford. https://wiki.openstreetmap.org/wiki/Key:ford

(23 Jun '16, 10:21) Piskvor

Yes it does but it is stretching the definition of a ford.

(23 Jun '16, 10:34) swaan
2

There would be some kind of tidal change and whats the surface ? Tag it as well.

(23 Jun '16, 10:42) Hendrikklaas

This is a route that is only open at low tides it links Lindisfarne with Northumberland in Northern England. https://www.openstreetmap.org/#map=18/55.67827/-1.87180

(23 Jun '16, 22:11) andy mackey
1

Re the Lindisfarne Causeway, there's a bit of "tagging for the renderer going on". It's actually called "Lindisfarne Causeway" not "Lindisfarne Causeway (Tidal Check times)":

https://www.openstreetmap.org/way/177021004

There's probably a way of tagging it with conditional tags (but not all routers will understand those).

(23 Jun '16, 22:32) SomeoneElse ♦

One Answer:

2

It is quite correctly tagged as a ford.

"A ford is a small part of a highway where a waterway runs over it." Yes, a few hundred meters is still a small part, IMHO.

"How to Map: use the way-method for larger streams with mapped riverbanks" Yes. There's depth, there's surface, there's tracktype. Looking good :)

answered 23 Jun '16, 11:16

Piskvor's gravatar image

Piskvor
1.3k91535
accept rate: 37%

edited 23 Jun '16, 14:13

Source code available on GitHub .