Mike D.,
I understand what you are saying, but I think you and I just interpreted Hugh's
second-paragraph question differently.
Oh, I don't know that there was ever a buoy marking the Lake Pontchartrain
parish quadripoint. If there was, I seriously doubt that it's there anymore.
Lowell G. McManus
Leesville, Louisiana, USA
----- Original Message -----
From: "aletheia kallos" <aletheiak@...>
To: <boundaryPoint@yahoogroups.com>
Sent: Tuesday, December 06, 2005 2:35 PM
Subject: Re: [BoundaryPoint] Re: special congrats may be in order for czdepl
improvement
> lowell
> you may well know better about louisiana & or in
> general & i hope you do
> but the difficulty with your florida example & perhaps
> all of these you mention
> since the question rightly asks & the bill you were
> trying to fit is for more precision rather than just
> more officialness
> is that the available geocoordinates are neither
> officially legal nor precise enough to be more useful
> than say the actual physical landform indications we
> have at czdepl
> or than any other geopositional guesses for that
> matter i suppose
>
> here for example
> http://www.fgdl.org/metadata/fgdc_html/cntbnd.fgdc.htm
> you could probably find at least some quasiofficial
> version of your & our dear glhemaokpa quintipoint
> down to a best guessed square foot i believe
> & despite the disclaimer 2 clicks down that says
> the data included in this application are based on
> interpretation of available info & shouldnt be
> construed as legally binding
> you might still have wanted to conclude you had
> arrived at something on the order of the correct
> square foot
> which would be great since thats about the size of the
> window you would need to stand in
> for a class b try
> but of course it is spurious or haphazard accuracy in
> their case & they pretty well admit it
> while what we are looking for is both full
> authenticity & as much real accuracy as possible
>
> & if you go to the ruling bible in this case
> for the legal descriptions on which their guesses are
> evidently based
> http://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=Ch0007/ch0007.htm
> looking under glades hendry martin okeechobee & palm
> beach
> you find it is just an indefinite definition & a
> purely hypothetical public land corner that the
> quasiofficial guess is based on
>
>
> & bill & i realized this too btw at the time when we
> visited circa 2000
> but we based our try on the geocoords we were able to
> lovingly pull off the paper usgs topo
> which was a similarly quasiofficial & similarly
> quasireliable source
> we knew full well
> but again it was all we had to go on at the time
> & certainly good enough because this was in the days
> of selective availability
> & even the 2 gps receivers we had on board werent
> enough to be absolutely sure we had the correct
> integral degminsec or 100 foot square
>
> so when we crossed our fingers & dropped our buoy
> there
> it was not only the state of play for glhemaokpa at
> the time but the state of the art for civilian
> multipoint buoy emplacement in general i think
> & no matter that our buoy cable had another 20 feet of
> play in it too
> nor that it was probably too frail to survive the next
> cold front
> let alone a hurricane
>
> & perhaps if we went back today with 2 gpsrs & a fresh
> buoy & cable & cinderblock
> we could hit the likeliest 10 foot square
> thanx just to the loss of selective availability
> but i think based on the above data we could not at
> all yet hit the correct or even the likeliest square
> foot
>
>
> nyonqc is a whole nother matter
> but the end result looks pretty much the same from
> here
>
> in fact after years of research & a personal visit try
> there too
> i have still not yet able to confirm that the turning
> point number 1 shown here
> http://topozone.com/map.asp?z=18&n=4983683&e=525991&s=50&size=l&u=6&datum=nad83&layer=DRG25
> & geopositioned here
> http://www.internationalboundarycommission.org/coordinates/SECT-K-83.txt
> is legally nyonqc
> but as you see
> it is legally specified by the ibc only to the nearest
> degminsecdec or 10 foot square
> so we are at best no better than the middle of lake
> okeechobee without a buoy in the middle of the saint
> lawrence & i suspect in the middle of lake
> pontchartrain too
>
> but if it turns out the usgs is wrong about nyonqc
> there
> which is somewhat likely since i cant find the really
> pertinent canadian confirmation
> & some canadian maps disagree
> then we apparently have even less refinement to our
> nyonqc coords
> whatever they may prove to be based on & ultimately be
>
>
> this question of the true nyonqc location btw is an
> interesting one in its own right
> in case anyone can help answer it
>
>
> but in any case
> does any of this precision gap even matter in the 3
> locations you are talking about
>
> of course not practically
>
> except perhaps when one is making a multipoint visit
> try
>
> & then one is trying ones very best on principle
> presumably
>
> but even then the governing limitations are built into
> the situation as usual
> since you can do no better than whats possible
> whatever that might be
>
> but at czedpl it appears the very probably correct
> square foot is not only possible
> but fairly easily reachable & doable
>
> indeed there one might even fancy & try to wheedle the
> correct square decimeter
>
> --- "Lowell G. McManus" <mcmanus71496@...> wrote:
>
>> Since the CAUS international boundary in the St.
>> Lawrence River is reduced to straight lines and
>> turning points, the New York-Ontario-Québec tripoint
>> should fit the bill. The famed county quintipoint
>> in Lake Okeechobee, Florida, and the lesser-known
>> parish quadripoint in Lake Pontchartrain, Louisiana,
>> might also be examples, albeit in wide lakes rather
>> than streams.
>>
>> Lowell G. McManus
>> Leesville, Louisiana, USA
>> ----- Original Message -----
>> From: Hugh Wallis
>> To: BoundaryPoint@yahoogroups.com
>> Sent: Tuesday, December 06, 2005 9:01 AM
>> Subject: RE: [BoundaryPoint] Re: special congrats
>> may be in order for czdepl improvement
>>
>>
>> Just curious - given the uncertainty about the
>> exact location expressed in your analysis, Mike, how
>> would you determine/measure "success" when you say
>> "i can only look forward all the more eagerly to our
>> first amphibious try here because there is now every
>> reason to make one & expect it will be successful "
>>
>> This raises the question of whether you or anyone
>> else here are aware of any similar wet tripoints
>> being defined legally in some more precise (and
>> stationary) manner such as by means of providing
>> Lat/Long coordinates according to some datum (as
>> distinct from your speculated method in this case
>> involving fluvial mid lines which necessarily will
>> change over time) ?.