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Extracting navigable rivers

Hi,

I would like to extract all navigable rivers from the OSM data. http://en.wikipedia.org/wiki/Navigability

I know the tools and processes, but I cannot figure out the combination of tags I should use to filter the data. If I take all ways with tags river,riberbank,canal, then I get huge amounts of data and most of the rivers are small/narrow and not navigable.

Could anyone suggest additional tags to filter the rivers by?

navigable river

asked 18 Nov '11, 14:08

dennisk
26●2●2●4
accept rate: 0%

One Answer:

It looks like you're going to have to make some assumptions about what kind of waterway is navigable and what isn't. Only a few waterways have been tagged as navigable=*, possibly because it's hard to ensure the verifiability of such a tag.

Many waterways have been tagged with legal permissions using the boat=* tag, but obviously this says nothing about the suitability of such waterways for navigation.

answered 18 Nov '11, 14:57

Jonathan Ben...
8.3k●17●85●108
accept rate: 18%