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Details for Benchmark: KU1439

N 40° 45.850 W 073° 58.367 (NAD 83)

Altitude: 52.16

Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)

Location:
In NEW YORK county, NY View Original Datasheet
Designation:
827
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

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Heute haben wir den Central Park besucht und dabei auch diesen gefunden.

Team Mambone

[Photos:]
photo

Pretty unintuitive benchmar, that I visited on my 3rd day in NYC.

[Photos:]
photoAstartus at KU1439

First try:
Cool.??

Second try:
Quite simply searched, found, finished ...

And now again right:
On our way from Leipzig on vacation to New York, Philadelphia, Washington DC, Niagara Falls, Cleveland, Toledo, Chicago, Sioux City, Badlands NP, Mount Rushmore, Bighorn Mountains, Cody, Yellowstone NP, Jackson, Grand Teton NP, Salt Lake City, Bryce Canyon NP, Lake Powell, Grand Canyon, Williams, Las Vegas, Mojave Desert, Los Angeles, Visalia, Yosemite NP, Modesto and San Francisco we came right here. Of course, we also wanted this one GeoCache / Benchmark on the To-Do list to pick up. And now there is a smiling face. There were no problems ... Yes, the destination fits. Thus: the end is good, all right ...

In other words:
Everything is there, where it belongs, undamaged and waiting for the next visitors.

Now we like to say:
Thank you for your GeoCache / Benchmark and another smiley on our map.

Greetings from Mrs. Lu and Mr. Lu

Mersi fir des Dous - Danke für die Dose - Thanks for that Cache- Merci pour la Cache - Dzieki za Cache - Grazie per questo Cache - Takk for at Cache - Obrigado por isso Cache - Gracias por el Cache - Díky za keš - Aciu už ta talpykla - Paldies par šo Cache - Aitäh selle eest Cache - ??????? ?? ?? ??? - Kiitos, että Cache - Tack för att Cache - Tak for denne Cache - Hvala cache - ???a??st? ??a t? µ??µ? cache - ???????? - Önbellek için tesekkürler - Köszönjük, hogy a cache - Bedankt voor de cache - Graças para o cache - Dankon pro la kasmemoron

Walked past this one many times today. Soon spotted it.

[Photos:]
photoThe corner

[EN]

With Sahlinabac, Superpipoca and my mother.

[PT]

Com o Sahlinabac, a Superpipoca e a minha mãe.

[EN]

With Sahlinabac, Bamiel and my mother.

[PT]

Com o Sahlinabac, o Bamiel e a minha mãe.

[EN]

With Superpipoca, Bamiel and my wife.

[PT]

Com a Superpipoca, o Bamiel e a minha mulher.

[Photos:]
photo827 (1)
827 (1)
photo827 (2)
827 (2)

During my visit to NY also visited this place

[Photos:]
photo

Saw the described spot on the step of the monument. We have been here many times before, this time we observed the unique benchmark as described.

found this while walking around central park

During our trip through the central park we found this place.

On a NYC Visit I have this Benchmark found. Thank you for showing.

[Photos:]
photoKU1439

found the corner of the lowest step on the southeast side of the statue

[Photos:]
photoIMG_0549
south east lowest corner
photoSherman monument
Sue standing on the mark

Found in good condition as described.

[Photos:]
photo827 Surface

Found during my visit to NYC
I don't totally understand this type of benchmark but people seems to think it's ok. Maybe I am newbie?
Many thanks in any case.

This entry was edited by picarax on Sunday, 17 May 2015 at 13:45:16 UTC.

Found during my stay in NY...

Found the Benchmark during our visit in NYC
THX
Mno2

Even if I'm definately NO Apple fan, I was told to get along to see the shop...finally, the benchmark was more interesting.

Saw this one on this cold and rainy day just prior to getting on the Metro to head south.

Rock-6

This is a strange one but, found as described.

[Photos:]
photo827

wow- it's cold today, well, cold for NYC that is. Windy as all get out too- now, where did I leave my kite?

Found it..

[Photos:]
photoCameraZOOM-20120920123529416

Thanks to PapaBear for his note of 11/15/2005, explaining the mistake in the description that references a brass plug that was never there. I can log this station as found, having seen the SE corner of the lowest step.

[Photos:]
photo827 - SE corner of lowest step
(anyone lose a button?)
photo827 - pigeon perch on a sunny winter day

Eine interessante Variante von Geocaching, die ich so bisher noch nicht kannte. Und wenn man schon mal über den großen Teich gereist ist, muss man dies natürlich auch mal testen! Der Benchmark befindet sich wie angegeben in gutem Zustand am bekannten Ort!! Vielen Dank fürs Zeigen!!

[Photos:]
photoKU1439

Found it on a nice place during our New York trip!

came by this was on the way to our bus.

Found it during my business trip to New York, thank you and greetings from Germany :-)

[Photos:]
photoBenchmark NY - Central Park 1

A nice Place with a Benchmark, an easy find after we had a look at the pictures.
# BM7

[Photos:]
photoKU 1439

Based upon what others have logged, I'll log it also. Corner was easy to find.

[Photos:]
photoKU1439

walked by when we visited Central Park were we were caching all day

Found this one on our visit to Central Park.

[Photos:]
photoKU1439

Nice quick find

Found it on a walk to the Central Park.

[Photos:]
photoKU1439

Found this one on our tour of New York.

Found this one on the way to the Central Park.

[Photos:]
photoKU1439

Found the top step, as per PapaBear's note.

Sherman is there- so's the step.

[Photos:]
photoIMG_0727

Found this one during my walk through New York City.

Found this one during my walk through New York City.

SE corner of the step of the Sherman monument. If you're from the South, as I am, this guy ain't exactly a hero to you.

[Photos:]
photomark
photosite

Saw this on a caching trip to the city.

Found it while geocaching near this corner of the park.

During our visit in New York I tried to find some of them an was successful at some places. This one on our way to central park.
Cheers from germany, avila99!

[Photos:]
photoThe statue

Mark recovred in good, but wet condition on my way back to my hotel.

Found during our most recent trip to Manhattan

We walked up to this monument from the east... the collection of horse-carriages around the plaza just added to the ambiance here at the very southeast corner of Central Park.

[Photos:]
photoKU1439 827 (Gen'l Sherman Statue-SE corner) NYC
"B. M. 827 - Fifth Avenue. The top of the southeast corner of the lowest granite step at the base of the Sherman monument at the Fifth Avenue and Fifty-ninth Street entrance to Central Park. The bench mark is 9 inches above the sidewalk. Elevation, 53.161 feet" - from Papa-Bear-NYC's quote of Koop's book on surveying NYC. The SE corner is at the lower center of this photo.

Found location. as shown

[Photos:]
photoKU1439
photoKU1439
photoSTATUE KU1439

Papa-Bear certainly put the research into this one, but I have to admit I would have logged it as found based on the recovery that said there was no brass plug found.
As I was walking around the monument a nice Irish lady stopped me and asked if I knew who the sculptor was. She said she hoped it was by Saint Gaudens, and I soon located the scuptor's name on the side of the monument for her. It turns out Saint Gaudens was Irish and she was very proud of him, and had even written a thesis on his works. She was very happy to have seen the monument, and thanked me for finding the name, which she said she never would have seen (all that benchmark hunting has helped my ability to spot things I guess!). Without that chance meeting this mark would have been something of a letdown, since there really is nothing to see in terms of a mark.

[Photos:]
photoKU1439 829, Manhattan, NY mark
This is the corner that is the station.
photoKU1439 829, Manhattan, NY location
The corner, from a bit further.
photoKU1439 829, Manhattan, NY Sherman Monument
The monument from the front.

I spent this afternoon in the NY Public Library and read through the volume [i]Precise Leveling in New York City[/i] by Frederick W. Koop, published in 1914. Mr. Koop was Assistant Engineer for the New York City Board of Estimate and Apportionment. From 1909 to 1914 he worked with a team of surveyors establishing benchmarks in the 5 boroughs of New York City. There are several chapters which outline goals, accuracy, methods, equipment and lastly there is are chapters giving a complete list of benchmarks for the entire city. I'm not sure of the total number since I only looked at Manhattan, but it's likely to be over 1,000 benchmarks. It should be noted that there were many other marks set by other city agencies such as the water department, sewer department and highway department in existance at that time, as well as a few bench marks set by the USC&GS in the city. But Koop's survey was the first to use consistant methods and datums for all 5 buroughs and for all city agencies. His work was considered of such quality that the USC&GS accepted is as a whole into it's national system of bench marks in the 1920s.

I was hoping to find documentation on another mark, but alas that belonged to another agency, but I did find this mark. Here is the original description:

[i]B. M. 827 - Fifth Avenue. The top of the southeast corner of the lowest granite step at the base of the Sherman monument at the Fifth Avenue and Fifty-ninth Street entrance to Central Park. The bench mark is 9 inches above the sidewalk. (Note 26, p. 91) Elevation, 53.161 feet"[/i]

Note 26 reads as follows:

[i]NOTE 26 -- A bench mark of this type is a point on a horizontal surface which was impossible for some reason to mark. This was usually the case when a bench mark was established on a polished granite surface, or in a conspicuous place."[/i]

So the 1952 entry on the NGS datasheet which stated that "the original description stated character of mark as being a brass plug" was wrong. Either they misread their source, or the description was corrupted between the original documentation (1914) and whatever secondary source that NGS used when making the 1952 entry. This explains why no brass plug was found when the 1952 team surveyed the mark, since there [b]never was a brass plug in the first place[/b].

[b]Bottom line:[/b] The mark is the top of the step. There is no brass plug or other mark on the step. I have therefore changed my previous entry to [b]Found[/b]

I submitted a recovery log to the NGS with the above information as a correction to the description on the datasheet.

[This entry was edited by Papa-Bear-NYC on Sunday, December 18, 2005 at 12:45:35 PM.]

[b]EDIT: 11/15/2005[/b] After studying the original documentation, I have changed my log from [b]Not Found[/b] to [b]Found[/b]. See note posted above on 11/15/2005.

(original log follows)

The described location is a pink granite step. No mark was found nor any indication of an old hole or indentation in the surfice. Except for dirt, etc. the surface looked perfectly untouched. The original 1952 description states: "NOTE-- ORIGINAL DESCRIPTION STATED CHARACTER OF MARK AS BEING A BRASS PLUG. NO BRASS PLUG WAS RECOVERED AT THE DESCRIBED POINT". I would conclude the mark was never there and the 1952 recovery as "GOOD" is in error.

I also checked all the steps on the other 3 corners of the statue and found nothing.

[This entry was edited by Papa-Bear-NYC on Tuesday, November 15, 2005 at 1:59:29 PM.]

[Photos:]
photoKU1439 "827", 59th & Fifth, NYC
South point of step. There is no sign of any mark.
photoKU1439 - setting, 59th & Fifth, NYC
This shows all the steps at this corner of the statue.
photoKU1439 - statue, 59th & 5th, NYC
View of Sherman statue from Fifth Avenue. The south corner is the one nearest to the camera.

The description is very clear: South corner of first step. I could not find it.

Documented History (by the NGS)

Unknown by NYBE+A (MONUMENTED)
01/01/1952 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1952 AT NEW YORK. AT NEW YORK, IN BOROUGH OF MANHATTAN, AT THE INTERSECTION OF 5TH AVENUE AND EAST 59TH STREET, AT SHERMAN CIRCLE, THE TOP OF THE SOUTH CORNER OF THE BOTTOM GRANITE STEP OF SHERMAN MONUMENT, 8.4 FEET WEST OF THE EAST CURBING OF SIDE WALK AND 0.7 FOOT ABOVE WALK. NOTE-- ORIGINAL DESCRIPTION STATED CHARACTER OF MARK AS BEING A BRASS PLUG. NO BRASS PLUG WAS RECOVERED AT THE DESCRIBED POINT AND ROD WAS HELD ON EXTREME SOUTH CORNER OF STEP.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (CBS) RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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