[Tagging] Rivers intermittently navigable

[Warin]

On 19/02/19 11:33, Fernando Trebien wrote:

> On Mon, Feb 18, 2019 at 7:08 PM Graeme Fitzpatrick
> <graemefitz1 at gmail.com> wrote:
>> With a range like that, that changes so frequently, I think you're stuck with =intermittent, maybe with a description= to say that water depth is constantly varying between 0.5 & 10m? !
> It is not intermittent=yes as zero depth (no water) is never reached.
> Only navigability is intermittent.

I think Graeme is suggesting

boat=intermittent

motorboat=intermittent

These values are not documented but make sense.

>
> For clarity, it doesn't change that much in a single month (so, not
> that quick), but in some years a month can have mostly a shallow
> depth, and in another year the same month can have near the highest
> level due to unexpected heavy rain. So I cannot come to a simple
> description like "it is always navigable between March and May", as in
> some years it will be February to August, others only June, in others
> it may be navigable in November for a week or two, etc.
>
> For example, Jaguarão river on the border between Brazil and Uruguay
> has oscillated between 147cm and 579cm last month [1][2], being safely
> navigable only for a few days, with a minimum of 73cm and maximum of
> 786cm during the last 10 years. 147cm is barely safe for a large
> vessel and the local authority does not currently call it navigable
> (it looks like their minimum is 2m to allow vessels with a draft of
> 1.5m), but says it is navigable when the level rises.

depth=0.15-0.58 ?? Again not documented.