[Imports] Baltimore County Maryland Hydrology Import

[Christoph Hormann]

On Friday 05 September 2014, Elliott Plack wrote:
> 3. Here is the
> resulting OSM file of that translation:
>    http://1drv.ms/1lLHSIm

This seems to be fairly incomplete/unfinished.  A few observations:

- no correct polygons for the water surfaces consisting of more than one 
way, tag natural=water on unclosed ways.
- tunnel sections of waterways have no waterway tag
- lots of empty name tags but only few actual waterway names.
- waterways mostly end at the water area edge and are not connected to 
the destination waterway.
- there are quite a few clearly artificial waterways tagged 
waterway=stream.
- use of landuse=basin seems strange - is apparently used for both areas 
with permanent and sporadic water cover.

> Questions:
>
> We have data on where the coastline is comprised of bulkhead, like
> where the coastline is unnatural. Is that relevant to the project? I
> haven't seen a bulkhead type tag but it could be considered a
> seawall.

There are no established supplementary tags to characterize the 
coastline itself - an artificial coastline often means there is some 
feature on the coast that should be mapped like man_made=dyke or 
man_made=breakwater and then there is no need to tag the line in 
addition.  For a bulkhead on its own barrier=retaining_wall would seem 
the most fitting established tag but barrier=bulkhead would actually 
seem quite appropriate.

-- 
Christoph Hormann
http://www.imagico.de/