Subject: Re: [BoundaryPoint] Re: frederick md
Date: Oct 16, 2004 @ 04:16
Author: Lowell G. McManus ("Lowell G. McManus" <mcmanus71496@...>)
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----- Original Message -----
From: "aletheiak" <aletheiak@...>
To: <BoundaryPoint@yahoogroups.com>
Sent: Friday, October 15, 2004 1:10 PM
Subject: [BoundaryPoint] Re: frederick md
>
>
> --- In BoundaryPoint@yahoogroups.com, "Lowell G. McManus"
> <mcmanus71496@m...> wrote:
> > The different colored areas of the PDF map (dark purple, green,
> yellow, blue)
> > represent different geologies within the watershed. The light
> purple lines are
> > the county and state boundaries. The white area is outside the
> watershed.
> >
> > The watershed, of course, is bounded by the natural ridge line.
> The map shows
> > that the light purple Frederick-Washington county boundary
> deviates eastward
> > from the natural watershed boundary as it approaches the MDPA
> state boundary.
> > Note that the watershed boundary does indeed continue northward
> into
> > Pennsylvania as it should. Yes, there is a slight jog at the
> state boundary,
> > but there is also a slight jog in the geologies at the state
> boundary. These
> > jogs are probably artifacts of slightly discrepant geological data
> from the two
> > states. The deviation of the county boundary from the natural
> ridge line while
> > still within Maryland, however, is not a mapping accident. It is
> confirmed by
> > the text reference to the "very small portion of Washington
> County" that is
> > within the watershed.
> >
> > The USGS map at http://tinyurl.com/5jme6 shows the county
> boundary, which seems
> > to be too far west as judged by Mike Donner's on-site observation
> of a "shiny
> > round topped stone post" that he took for the tripoint. Note that
> the USGS does
> > show that monument but doesn't think it the tripoint. (I'm
> withholding judgment
> > until Mike tells us what it said on that monument, if anything.)
> The USGS map
> > does not specifically show the drainage divide, but careful
> inspection of the
> > contours will prove that the divide must strike the MDPA boundary
> west of the
> > depicted county boundary. The divide runs approximately along the
> north-south
> > road through the community of Blue Ridge Summit, Pennsylvania. If
> you will pan
> > the map one iteration northward, you will see that the divide runs
> to the small
> > hill just southeast of Monterey, then ascends Monterey Peak
> farther north.
>
> ok i follow you so far
> & then thru bare rock
> & perhaps to pine mountain
>
> but in the peculiar scramble of the heights around there
> the name of the divide has changed
> either to culp ridge
> or to south mountain
> in which case its color has also changed
> to green ridge
>
> perhaps the blue ridge ends on the north slope of pine mountain
>
> or can anyone tell better
>
> http://topozone.com/map.asp?lat=39.72417&lon=-77.47167
>
> This
> > is not in keeping with the trend of the county boundary as it
> strikes MDPA.
> >
> > Lowell G. McManus
> > Leesville, Louisiana, USA
> >
> >
> > ----- Original Message -----
> > From: "Michael Kaufman" <mikekaufman79@y...>
> > To: <BoundaryPoint@yahoogroups.com>
> > Sent: Monday, October 11, 2004 12:06 AM
> > Subject: Re: [BoundaryPoint] frederick md
> >
> >
> > >
> > > In the map in the pdf - is the left edge of the purple
> > > area supposed to be the ridge? If it is it goes
> > > straight north. But the USGS ridge line and supposed
> > > county border slants northeast; it most closely mimics
> > > the purple county boundary in the pdf map. I think if
> > > the TP marker were on the pdf it would still fall east
> > > of the purple line.
> > >
> > > --- "Lowell G. McManus" <mcmanus71496@m...> wrote:
> > >
> > > > At http://tinyurl.com/5jpd4 there is an 18-page PDF
> > > > of a technical study of
> > > > water availability in the Monocacy River watershed,
> > > > which lies east of the Blue
> > > > Ridge divide in Maryland and Pennsylvania. The
> > > > second and third sentences of
> > > > the document state:
> > > >
> > > > "This drainage area includes significant portions of
> > > > Frederick County, Maryland;
> > > > Carroll County, Maryland; and Adams County,
> > > > Pennsylvania. It also includes a
> > > > small portion of Montgomery County, Maryland; a very
> > > > small portion of Washington
> > > > County, Maryland; and Franklin County,
> > > > Pennsylvania."
> > > >
> > > > That "very small portion of Washington County"
> > > > proves that the
> > > > Frederick-Washington boundary must necessarily stray
> > > > east of the actual drainage
> > > > divide. A watershed map on page 3 of the PDF shows
> > > > such deviation at the
> > > > boundary's north end as it reaches its tripoint with
> > > > Pennsylvania. This
> > > > probably somehow accounts for the discrepancy that
> > > > you noted on the USGS map.
> > > >
> > > > Washington County was created from Frederick County
> > > > in 1776, and their common
> > > > boundary was surveyed in 1824. Field notes of the
> > > > survey are listed in the
> > > > on-line catalog of the Maryland State Archives.
> > > >
> > > > Lowell G. McManus
> > > > Leesville, Louisiana, USA
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "aletheiak" <aletheiak@y...>
> > > > To: <BoundaryPoint@yahoogroups.com>
> > > > Sent: Saturday, October 09, 2004 11:04 AM
> > > > Subject: [BoundaryPoint] frederick md
> > > >
> > > >
> > > > >
> > > > >
> > > > > fresh virgin multipoint today class a
> > > > >
> > > >
> > > http://topozone.com/map.asp?lat=39.72417&lon=-77.47167
> > > > > where the mason dixon line crosses the blue ridge
> > > > > tho i only just realized they even do cross
> > > > > yikes
> > > > > at the interstate tricounty point of franklin
> > > > county pennsylvania
> > > > > with frederick & washington counties of maryland
> > > > > aka frfrwa or mdpa3frfrwa or technically
> > > > us2mdpa3frfrwa
> > > > > marked by a shiny round topped stone post in
> > > > someones side yard
> > > > >
> > > > > & tho i cant tell whether the blue ridge itself
> > > > may continue in the
> > > > > scramble of mountains still farther north from
> > > > here
> > > > > this point does mark the northern limit of the use
> > > > of the blue ridge
> > > > > as a state &or county boundary
> > > > >
> > > > > in fact frfrwa is exactly 1 tricounty point & 1
> > > > state line north from
> > > > > mdvawv on the blue ridge
> > > > > & all very cleanly so
> > > > > seeing as the frwa county line completely
> > > > transsects maryland along
> > > > > the blue ridge
> > > > >
> > > > > all of which you can see if you zoom out
> > > > >
> > > > > but if you zoom in
> > > > > you will find this topo is quite odd
> > > > > in showing the tripoint & the marker in 2
> > > > different locations
> > > > >
> > > > > on the ground
> > > > > there is only an ordinary mdpa marker at the
> > > > tripoint position shown
> > > > > on the topo
> > > > > but the true tripoint marker is the one shown
> > > > about 50 yards farther
> > > > > east on the opposite side of the road
> > > > >
> > > > > marker 92 still farther east is a mason dixon
> > > > milestone
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
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