[OSM-talk] waterway - "routable network" and reservoirs/lakes

[Malcolm Herring]

On 27/07/2015 20:23, Jochen Topf wrote:
> This is more about the water flow than about being navigable by a ship.

Indeed. Given that the waterway tagging rules cited in the OP applies 
equally to streams, ditches & drains, then the routability clearly does 
not imply navigability, merely continuity of the watercourse, 
obstructions such as weirs, sluices, locks, etc not withstanding.