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 <[email protected]>: > 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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