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).
And in that Topozone map - is that a
Salisbury-Seabrook-Massachusetts tripoint? NH towns
have more ocean territorry than MA towns? And is it
up to the three Nautical mile limit?
--- aletheiak <
aletheiak@...> 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
> >
> >
> >
> >
> > __________________________________
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