[Tagging] Rivers intermittently navigable

[Fernando Trebien]

Hello,

motorboat=* is used to represent waterways (rivers, canals and lakes)
that are open to inland navigation. In a river that does not dry up
enough to be mapped as intermittent=yes, is it possible to represent
that a river is sometimes not navigable according to local authorities
due to varying water level, by vessels that are at least a bit larger
than a canoe, typically cargo or passenger vessels?

motorboat:conditional only works if the periods where the river is
navigable are predictable, and that usually depends on the variable
amount of rain on the basin.

Regards,

-- 
Fernando Trebien