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amandasaurus / waterwaymap.org

WaterwayMap.org | River Basins from OpenStreetMap
https://WaterwayMap.org
Apache License 2.0
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Consider underground pipelines that have subtance=water #57

Closed kaleidoscopica closed 1 week ago

kaleidoscopica commented 1 month ago

I came across a drainage tunnel someone had tagged as an underground pipeline (layer=-1, location=underground, man_made=pipeline). It connects two exposed drains on either end, just functioning as an underground tunnel in between them. The tags seem to be appropriate per https://wiki.openstreetmap.org/wiki/Key:tunnel, which indicates that "When the waterway=* runs underground for a considerable distance, you can use ... man_made=pipeline for sections built with tube assemblies". With this in mind, I wonder if WWM should account for pipelines that have substance=water in them.

One example is here https://www.openstreetmap.org/edit?editor=id#map=19/29.46003/-98.54983 -- currently WWM does not see this as a connection between the drains on either end.

quincylvania commented 1 month ago

I would say the example is mistagged since it's just underground drainage (it's not even clear if it's in a pipe). I would only use underground man_made=pipeline for things like pumped or pressurized flows, mainly found at industrial sites, waterworks, dams, etc.