Subject: Re: [BoundaryPoint] Re: eelvru - > thalweg
Date: Aug 01, 2003 @ 16:12
Author: Jesper Nielsen ("Jesper Nielsen" <jesniel@...>)
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hahahahahahehehehehu
 
The only person in this forum that likes to complicate matters more than neccessary must be the utterly Mr Donner.
 
If I take a leek on the ground ofcourse this running water will have a deepest channel. That makes sence.
 
But what does not make sense to me, is for two countries divided by a small creek, not used for any navigation to choose the deepest channel of this creek as their common border. Choosing the middle line would make much more sense.
 
Jesper  
----- Original Message -----
From: acroorca2002
To: BoundaryPoint@yahoogroups.com
Sent: Friday, August 01, 2003 4:36 PM
Subject: [BoundaryPoint] Re: eelvru - > thalweg

jesper
a thalweg has nothing to do with the size of a stream
& is not arbitrary nor any mere matter of opinion
but is a fact of physics & of natural geography
exactly in the same way as a watershed or ridge line is a fact
regardless of the elevation or mass of the heights it divides

or plainer still
a thalweg is just the absolute bottom line of a valley
regardless of the dimensions of that valley or of its water flow

so why complicate this utterly simple reality with interpretations
rationalizations exceptions excuses etc


& if you are still with me here
for purposes of any earnestly punctilious try
a thalweg junction tripoint is far from an occasion for shrugging
ones shoulders or throwing up ones hands
but is actually just as flagrantly obvious & real
& just as much an occasion for dancing
as a summit tripoint

indeed
think of it as a summit tripoint in reverse & you cant miss it

you know
as in highpointing or lowpointing
only wetter


also a thalweg is definitely not an effect of navigation

on the contrary
navigation if any seeks & follows the thalweg

there doesnt need to be navigability for there to be a thalweg

there only needs to be running water

in this regard the definition quoted from gideons bible below is
incomplete & misleading


& i am just as sure as you are of the opposite
that if the treaties specify the thalwegs
as they usually do in europe & most probably do in these cases
then the thalwegs are the boundary lines
& the thalweg junctions mark the tripoints

so maybe we should look for the treaties before settling this
but as for how to know where the thalweg is
if you still cant tell from the above description
or jans fantastic picture of you pointing straight at a tri thalweg
please see also my recent answer to jan when he first asked

--- In BoundaryPoint@yahoogroups.com, "Jesper Nielsen"
<jesniel@i...> wrote:
> I would think using the thalweg-principle is only for wide rivers
where navigation is possible and normal. Probably more often
outside Europe where small rivers would be used for navigation
as well. This makes navigation possible for both countries.
>
> For smaller water courses I am sure the middle line is the
general rule.
>
> And how to know where the thalweg is? I guess people
navigation know. Otherwise onless the countries have problems
with one another it's not an issue untill something happens. Just
like land borders with poor demarcation: Nobody really cares
(only freaks) untill it is necessary to find out, with the help of
surveyors etc.
>
> Jesper
>   
>
>
> > THALWEG
> > 1. «A German term, literally "downstream," with reference to
> river
> > navigation. Here referring to the deepest channel in a river,
> genereally the
> > most suitable channel for navigation at the normal lowest
> water level.»
> > (Biger, p. 522)
> >
> > (How to find the deepest channel in a 5 metre broad river?!?)
>
>
>
>
>
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