[Tagging] Proposed Features - RFC - Penstock waterways

[François Lacombe]

Hi all,

The proposal has been edited following some useful comments
https://wiki.openstreetmap.org/wiki/Proposed_features/Hydropower_water_supplies

Edit summary:
Drop waterway=penstock
Introduce waterway=duct for pipe-flow waterways only (opposite from drains
where water flows freely with an open surface and no pressure). It covers
penstocks, siphons and pressurized pipes/tunnels. A duct intake is always
below water level or connected to a pump.
Making waterway=spillway approved
Penstocks are now distinguished from feeding galleries with usage=penstock
vs usage=transmission

A little detail left:
tunnel=yes sounds like a tunnel accessible to human and flooded drains are
usually mapped with tunnel=culvert
A culvert is normally a few meters long. Is it suitable for kilometres long
free flow tunnels ?
I see no human accessible drains when in operation, then tunnel=yes and
waterway=drains should be incompatible.


Thanks in advance for your comments

François


2017-12-02 13:51 GMT+01:00 François Lacombe <fl.infosreseaux at gmail.com>:

> Hi all,
>
> This proposal is set for RFC
> https://wiki.openstreetmap.org/wiki/Proposed_features/
> Hydropower_water_supplies
>
> It introduces waterway=penstock, pipeline=surge_tank and formalize a bit
> the usage of waterway=drain to map hydropower water supplies.
>
> waterway=penstock would be useful to map major water diversions for
> industrial usage in the global water topology.
> It would be added to other man made structures (canals, drains) where
> water flows.
>
> Feel free to propose examples, cases or improvements
>
>
> All the best
>
> François
>
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