Sorry if I made you feel insecure.
The facts from BUS&SS that you mention are the very ones I am using in
my hypothesis. We have a difference of opinion as to whether the Bois
de Sioux could produce a meander of approximately 450 feet over the
course of 110 years (or less, depending when the river was
channelized). The soil in that area is loamy and not particularly
resistant, so I think a meander of that size would be quite possible.
Further evidence is provided by the other meanders north and south of
the one in question. The pattern is unmistakably that of a meandering
river.
But are right about needing further information to reach a conclusion.
I am trying to get some details about where the river flowed just
prior to being straightened.
BJB
--- In BoundaryPoint@y..., "m donner" <maxivan82@h...> wrote:
> brian
> i know you have offered this opinion before
> nor did i disagree out loud a second time by offering these new sources
> because you already heard me once
> so this time i will only note 2 facts from bus&ss p4f
>
> 1
> when bed & channel are changed by the natural & gradual processes
known as
> erosion & accretion the boundary follows the varying course of the
stream
>
> 2
> if the stream from any cause natural or artificial suddenly leaves
its old
> bed & forms a new one
> by the process known as avulsion
> the resulting change of channel works no change of boundary
> which remains in the middle of the old channel tho no water may be
flowing
> in it
>
>
> now i believe a stream of this small size couldnt possibly have
accreted
> anywhere near so much as you believe it has
> namely several times its own width
> even in these 11 decades
>
> if streams could routinely sneak around that way they wouldnt make
very good
> boundaries
> & accretion would be a terrible problem
> which it generally isnt
>
> yet somehow usgs has gotten the idea that mnndsd has moved
> & this cant be entirely ignored or poopooed until we know for sure
why they
> think this
> but in the meantime i think they probably mistook an avulsion or
work of man
> for an accretion
>
> remember
> except for only the very minor inching of accretions
> only a supreme court decision or act of congress could actually make
the
> tripoint move
>
> so i continue to think mnndsd will be found basically unmoved
> & moreover since the witness rock pinpoints it
> this tripoint might be uniquely empowered to withstand even accretion
> & thus remain absolutly unmoved even despite accretion
>
> in any case it will be interesting to see how far the 9 chains fall
from the
> thalweg today
> & then we can see what there is to argue about
> probably very little
> because tho i myself reached & identified this usgs mnndsd position
first i
> still just cant see it as even being worth talking about
> unless substantiated by something real
>
> m
>
>
> >From: "bjbutlerus" <bjbutler@b...>
> >Reply-To: BoundaryPoint@y...
> >To: BoundaryPoint@y...
> >Subject: [BoundaryPoint] Re: new online legal supplement to bus&ss
> >discovered
> >Date: Sun, 20 Jan 2002 15:31:31 -0000
> >
> >Except, of course, for the unratified means of erosiion and
> >accretion. I still like the hypothesis that MNNDSD moved gradually
> >from the point 9 chains east of the nearby witness monument to the
> >position shown on the topo map (or thereabouts) and was then frozen
> >at that position by the man-made avulsion of straightening and
> >leveeing the river. A possible discrepancy would occur if the topo
> >map was not made at the time the river was rechanneled (a likely
> >discrepancy). We really need to see the maps that were used during
> >the construction project. Also, this hypothesis leads to an infinite
> >number of paleoMNNDSD points along the 9-chain line segment east of
> >the witness monument.
> >
> >BJB
> >
> > > if you are searching for a particular topic such as mnndsd for
> >example then
> > > you can simply scan the list & see that the court at least has
> >never ruled
> > > on any of the 3 interstate boundaries that terminate there at
> >mnndsd
> > > & thus can conclude that if any change has occurred in the mnndsd
> >position
> > > since its creation it would have had to have been approved by the
> >only other
> > > possible means of ratification
> >
> >
> >
>
>
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