dont know how much of your observation & query string the ensuing
oops was meant to obviate
but maybe the following inserts will still illuminate or levitate
--- In
BoundaryPoint@yahoogroups.com, Michael Kaufman
<mikekaufman79@y...> wrote:
> MANH state line - while the border approximately
> follows the Merrimack at some general distance offset
> ( http://ma.water.usgs.gov/basins/merrimack.htm
> ), it is monumented and the border is the standard
> series of straight lines as depicted on Topozone (
> http://www.topozone.com/map.asp?
z=19&n=4747939.00011567&e=351357.999989004&datum=nad83
> and westward).
correct
& i didnt mean to imply it hasnt also been set by standard markers
but only meant that the original delineation was a river bank offset
line
> And in that Topozone map - is that a
> Salisbury-Seabrook-Massachusetts tripoint?
i dont think so in any case
the manh state line shown on the 100k scale topo petering out
somewhat shy of the 3mile limit is just incomplete
it should be extended mentally all the way out to the red line
& doesnt reflect town limits anyway
& tho there are exceptions
i believe municipal territories generally end & state territories
generally begin at the low tide line
unless otherwise indicated
like salisbury beach state park is otherwise indicated
NH towns
> have more ocean territorry than MA towns?
with the above unusual exception
apparently usually not
but of course i dont really know every other exception either
And is it
> up to the three Nautical mile limit?
generally state territories only extend up to this limit
>
> --- aletheiak <aletheiak@y...> wrote:
> > arif
> > i too believed in this arc report about easternmost
> > gmsn
> > & may even have been responsible for starting the
> > rumor about it
> > but i have been unable to substantiate it
> >
> > this border is set at a fixed distance from the
> > river on both sides
> > presumably from both its banks rather than from its
> > thalweg
> > just like the manh state line is offset from the
> > merrimack
> > except doubly so
> > as you probably also realized
> > & can see here
> >
> http://www.lib.utexas.edu/maps/africa/gambia_pol88.jpg
> >
> > however
> > as beguilingly arclike as all this may seem
> > such a regime would not actually presuppose any true
> > arcs at all
> >
> > except
> > i would agree
> > conceivably a single one centered at the headspring
> >
> >
> > however
> > the source of the gambia river is not in gambia
> > but in senegal
> > as you can also see in the above map
> > & therefore the simple offset regime couldnt project
> > such a
> > simple terminal arc sector
> >
> > only by varying the apparent regime & reducing it to
> > a single
> > offset center point in the middle of the river
> > could such a final true arc have been produced
> >
> >
> > also the map doesnt show any such terminal rounding
> > or bulge
> > as one would expect in such a case
> > but quite the contrary
> > something more like a foreshortening or truncation
> > of the basic regime
> > & indeed it makes the cutoff point look quite
> > arbitrary & artificial
> > & somehow distinctly at odds with the basic offset
> > regime
> >
> >
> > so at this point i think the existence of an arc on
> > gmsn hasnt
> > been & probably wont be demonstrated
> > & was just a wishful thought & misconception in the
> > first place
> >
> >
> > mind you
> > i dont actually know how the gmsn border does
> > accomplish this
> > remarkable turnabout at its east end if not in some
> > approximation of an arc or arcs
> >
> > & i can still imagine how it might somehow involve a
> > true arc or 2
> > based at some known terminal cross section of the
> > river
> >
> > but i dont believe there is any text that specifies
> > to this effect
> > nor any map that suggests it
> >
> >
> >
> > meanwhile
> > i have scoured the ghost frgb lines of the period
> > & have discovered nothing new
> > so our world class border arc census is again
> > stalled
> > at a top count of about 20 now & perhaps forever
> >
> > --- In BoundaryPoint@yahoogroups.com, Arif Samad
> > <fHoiberg@y...> wrote:
> > > Not sure, but isn't there some (at least one arc)
> > in
> > > the border of Senegal and Gambia. As far as I
> > > thought, the Easternmost point is directly east of
> > the
> > > Center of the arc in that border.
> > > Arif
> > >
> > >
> > >
> > >
> > > __________________________________
> > > Do you Yahoo!?
> > > New and Improved Yahoo! Mail - 100MB free storage!
> > > http://promotions.yahoo.com/new_mail
> >
> >
>
>
>
>
> __________________________________
> Do you Yahoo!?
> Read only the mail you want - Yahoo! Mail SpamGuard.
> http://promotions.yahoo.com/new_mail